Professor Dirk van der Werf
Physics Department, Swansea UniversitySingleton Park, Swansea SA2 8PP, UK
| tel: | +44 1792 513053 |
| email: | d.p.van.der.werf@swansea.ac.uk |
| ORCID: | 0000-0001-5436-5214 |
| SCOPUS:: | 7004830398 |
| |
Professor Dirk van der WerfPhysics Department, Swansea UniversitySingleton Park, Swansea SA2 8PP, UK
| |
Antihydrogen (H)
I have been working on antihydrogen research since1998, presently being part of two antihydrogen collaborations:
The goal of the ALPHA collaboration, of which I am a founding member, is to test CPT conservation by comparing the 1S-2S transition of antihydrogen with that of hydrogen. We have been able to trap antihydrogen for over >1000 s, observed the >first resonant transitions in the antiatiom using microwaves and obtained a >new limit on the charge of the antihydrogen atom. After upgrading the apparatus we observed the >1S-2S transition in trapped antihydrogen and we able to measure the >lineshape of the hyperfine transition of the anti-atom.
The GBAR collaboration wants to measure the acceleration of antihydrogen in a matter field, using a novel technique by forming H+, sympathetically cooling this anti-ion in a Paul trap and then removing the excess positron with lasers radiation, leaving a neutral antihydrogen atom experiencing only a gravitational force. Presently, the most of the constituent parts of the experiement have arrived at CERN and hopefully we will be able to produce positrons soon and measure the incoming antiproton flux.
Positrons (e+) and Positronium (Ps)
In Swansea we build a >two stage positron accumulator, which has, for instance, been used to produce >highly magnetised Ps atoms and to gain a better understanding of >rotating wall compression in the single particle limit. We build a 243 nm pulsed laser, which has been used to excite positronium from the >1S to the 2P state, and togheter with another laser, we have been able to produce Rydberg Ps. These could be useful for low temperature H production.
Adiabetic expansion cooling of antihydrogen
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, A. Capra, S. Cohen, C. Torkzaban, C. L. Cesar, M. Charlton, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, P. Granum, J. S. Hangst, M. E. Hayden, D. Hodgkinson, C. A. Isaac, M. A. Johnson, S. A. Jones, S. Jonsell, N. Kalem, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, T. Momose, J. Munich, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, G. Stutter, T. D. Tharp, R. I. Thompson, D. P. van der Werf, and J. S. Wurtele
Phys. Rev. Research 6 (2024) L032065
(pdf)
doi.org/10.1103/PhysRevResearch.6.L032065
Measurements of Penning-Malmberg trap patch potentials and associated performance degradation
C. J. Baker, W. Bertsche, A. Capra, C. L. Cesar, M. Charlton, A. Christensen, R. Collister, A. Cridland Mathad, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Grandemange, P. Granum, J. S. Hangst, M. E. Hayden, D. Hodgkinson, E. D. Hunter, C. A. Isaac, M. A. Johnson, J. Jones, S. A. Jones, S. Jonsell, A. Khramov, L. Kurchaninov, H. Landsberger, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, T. Momose, P. S. Mullan, J. J. Munich, K. Olchanski, A. Olin, J. Peszka, A. Powell, P. Pusa, C.Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, G. Stutter, T. D. Tharp, R. I. Thompson, C. Torkzaban, D. P. van der Werf, E. Ward, and J. S. Wurtele
Phys. Rev. Research 6 (2024) L012008
(pdf)
doi.org/10.1103/PhysRevResearch.6.L012008
Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud
P. Adrich, P. Blumer, G. Caratsch, M. Chung, P. Cladé, P. Comini, P. Crivelli, O. Dalkarov, P. Debu, A. Douillet, D. Drapier, P. Froelich, N. Garroum, S. Guellati-Khelifa, J. Guyomard, P-A. Hervieux, L. Hilico4, P. Indelicato, S. Jonsell, J-P. Karr, B. Kim, S. Kim, E-S. Kim, Y.J. Ko, T. Kosinski, N. Kuroda, B.M. Latacz, B. Lee, H. Lee, J. Lee, E. Lim, L. Liszkay, D. Lunney,G. Manfredi, B. Mansoulié, M. Matusiak, V. Nesvizhevsky, F. Nez, S. Niang, B. Ohayon, K. Park, N. Paul, P. Pérez, C. Regenfus, S. Reynaud, C. Roumegou, J-Y. Roussé, Y. Sacquin, G. Sadowski, J. Sarkisyan, M. Sato, F. Schmidt-Kaler, M. Staszczak, K. Szymczyk, T.A. Tanaka, B. Tuchming, B. Vallage, A. Voronin, D.P. van der Werf, D. Won, S. Wronka, Y. Yamazaki, K-H. Yoo, P. Yzombard
European Physical Journal C 83 (2023) 1004
(pdf)
doi.org/10.1140/epjc/s10052-023-12137-y
Design and performance of a novel low energy multispecies beamline for an antihydrogen experiment
C. J. Baker, W. Bertsche, A. Capra, C. L. Cesar, M. Charlton, A. J. Christensen, R. Collister, A. Cridland Mathad, S. Eriksson, A. Evans, N. Evetts, S. Fabbri, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Grandemange, P. Granum, J. S. Hangst, M. E. Hayden, D. Hodgkinson, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, A. Khramov, L. Kurchaninov, N. Madsen, D. Maxwell, J. K. McKenna, S. Menary, T. Momose, P. S. Mullan, J. J. Munich, K. Olchanski, J. Peszka, A. Powell, C. Ø. Rasmussen, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, D. M. Starko, G. Stutter T. D. Tharp, R. I. Thompson, C. Torkzaban, D. P. van der Werf and J. S. Wurtele
Phys. Rev. Accel. Beams 26 (2023) 040101
(pdf)
doi.org/10.1103/PhysRevAccelBeams.26.040101
Design study of an antiproton trap for the GBAR experiment
Kyoung-Hun Yoo, Seok-Ho Moon, Moses Chung, Dong Hwan Won, Kwan Hyung Park, Byungchan Lee, Sun Kee Kim,𝑏, Eunhoon Lim, Eun-San Kim, Bong Ho Kim, Dirk van der Werf, Naofumi Kuroda and Patrice Pérez
Journal of Instrumentation 17 (2022) T10003
(pdf)
doi.org/10.1088/1748-0221/17/10/T10003
Positron accumulation in the GBAR experiment
P. Blumer, M. Charlton, M. Chung, P. Cladé, P. Comini, P. Crivelli, O. Dalkarov, P. Debu, L. Dodd, A. Douillet, S. Guellati, P.-A. Hervieux, L. Hilico, A. Husson, P. Indelicato, G. Janka, S. Jonsell, J.-P. Karr, B.H. Kim, E.S. Kim, S.K. Kim, Y. Ko, T. Kosinski, N. Kuroda, B.M. Latacz, B. Lee, H. Lee, J. Lee, A.M.M. Leite, K. Lévêque, E. Lim, L. Liszkay, P. Lotrus, D. Lunney, G. Manfredi, B. Mansoulié, M. Matusiak, G. Mornacchi, V. Nesvizhevsky, F. Nez, S. Niang, R. Nishi, B. Ohayon, K. Park, N. Paul, P. Pérez, S. Procureur, B. Radics, C. Regenfus, J.-M. Reymond, S. Reynaud, J.-Y. Roussé, O. Rousselle, A. Rubbia, J. Rzadkiewicz, Y. Sacquin, F. Schmidt-Kaler, M. Staszczak, K. Szymczyk, T. Tanaka, B. Tuchming, B. Vallage, A. Voronin, D.P. van der Werf, S. Wolf, D. Won, S. Wronka, Y. Yamazaki, K.H. Yoo, P. Yzombard, (GBAR collaboration), C.J. Baker
Nuclear Inst. and Methods in Physics Research, A 1040 (2022) 167263
(pdf)
doi.org/10.1016/j.nima.2022.167263
Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production
C.J. Baker, W. Bertsche, A. Capra, C.L. Cesar, M. Charlton, A. Cridland Mathad, S. Eriksson, A. Evans, N. Evetts, S. Fabbri, J. Fajans, T. Friesen, M.C. Fujiwara, P. Grandemange, P. Granum, J.S. Hangst, M.E. Hayden, D. Hodgkinson, C.A. Isaac, M.A. Johnson, J.M. Jones, S.A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, D. Maxwell, J.T.K. McKenna, S. Menary, T. Momose, P. Mullan, K. Olchanski, A. Olin, J. Peszka, A. Powell, P. Pusa, C.Ø. Rasmussen, F. Robicheaux, R.L. Sacramento, M. Sameed, E. Sarid, D.M. Silveira, G. Stutter, C. So, T.D. Tharp, R.I. Thompson, D.P. van der Werf, J.S. Wurtele
Nature Communications 12 (2021) 6139
(pdf)
doi.org/10.1038/s41467-021-26086-1
A pulsed high-voltage decelerator system to deliver low-energy antiprotons
A. Hussoni, B.H. Kim, A. Welker, M. Charlton, J.J. Choi, M. Chung, P. Cladé, P. Comini, P.-P. Crépin, P. Crivelli, O. Dalkarov, P. Debu, L. Dodd, A. Douillet, S. Guellati-Khélifa, N. Garroum, P.-A. Hervieux, L. Hilico, P. Indelicato, G. Janka, S. Jonsell, J.-P. Karr, E.-S. Kim, S.K. Kim, Y. Ko, T. Kosinski, N. Kuroda, B. Latacz, H. Lee, J. Lee, A.M.M. Leite, K. Lévêque, E. Lim, L. Liszkay, P. Lotrus, D. Lunney, G. Manfredi, B. Mansoulié, M. Matusiak, G. Mornacchi, V.V. Nesvizhevsky, F. Nez, S. Niang, R. Nishi, S. Nourbaksh, K.H. Park, N. Paul, P. Pérez, S. Procureur, B. Radics, C. Regenfus, J.-M. Reymond, S. Reynaud, J.-Y. Roussé, O. Rousselle, A. Rubbia, J. Rzadkiewicz, Y. Sacquin, F. Schmidt-Kaler, M. Staszczak, B. Tuchming, B. Vallage, A. Voronin, D.P. van der Werf, S. Wolf, D. Won, S. Wronka, Y. Yamazaki, K.-H. Yoo
Nuclear Inst. and Methods in Physics Research, A 1002 (2021) 165245
(pdf)
doi.org/10.1016/j.nima.2021.165245
Author Correction: Investigation of the fine structure of antihydrogen (Nature, (2020), 578, 7795, (375-380), 10.1038/s41586-020-2006-5)
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, iS. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Granum, J. S. Hangst, W. M. Hardy, M. E. Hayden, E. D. Hunter, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, S. Jonsell, A. Khramov, P. Knapp, L. Kurchaninov, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, J. J. Munich, S. Menary, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, D. M. Starko, G. Stutter, T. D. Tharp, R. I. Thompson, D. P. van der Werf, J. S Wurtele
Nature 594 (2021) E5
(pdf)
doi.org/10.1038/s41586-021-03367-9
Laser cooling of antihydrogen atoms
C. J. Baker, W. Bertsche, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, A. Christensen, R. Collister, A. C. Mathad, A. Cridland, S. J. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Grandemange, P. Granum, J. S. Hangst, W. M. Hardy, M. E. Hayden, D. Hodgkinson, E. Hunter, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, S. Jonsell, A. Khramov, P. Knapp, L. Kurchaninov, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, P. S. Mullan, J. J. Munich, K. Olchanski, A. Olin, J. Peszka, A. Powell, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, D. M. Starko, C. So, G. Stutter, T. D. Tharp, A. Thibeault, R. I. Thompson, D. P. van der Werf, J. S Wurtele
Nature 592 (2021) 35
(pdf)>
doi.org/10.1038/s41586-021-03289-6
Positron production using a 9 MeV electron linac for the GBAR experiment
M. Charlton, J.J. Choi, M. Chung, P. Cladé, P. Comini, P.-P. Crépin, P. Crivelli, O. Dalkarov, P. Debu, L. Dodd, A. Douillet, S. Guellati-Khélifa, P.-A. Hervieux, L. Hilico, A. Husson, P. Indelicato, G. Janka, S. Jonsell, J.-P. Karr, B.H. Kim, E.-S. Kim, S.K. Kim, Y. Ko, T. Kosinski, N. Kuroda, B. Latacz, H. Lee, J. Lee, A.M.M. Leite, K. Lévêque, E. Lim, L. Liszkay, P. Lotrus, T. Louvradoux, D. Lunney, G. Manfredi, B. Mansoulié, M. Matusiak, G. Mornacchi, V.V. Nesvizhevsky, F. Nez, S. Niang, R. Nishi, S. Nourbaksh, K.H. Park, N. Paul, P. Pérez, S. Procureur, B. Radics, C. Regenfus, J.-M. Rey, J.-M. Reymond, S. Reynaud, J.-Y. Roussé, O. Rousselle, A. Rubbia, J. Rzadkiewicz, Y. Sacquin, F. Schmidt-Kaler, M. Staszczak, B. Tuchming, B. Vallage, A. Voronin, A. Welker, D.P. van der Werf, S. Wolf, D. Won, S. Wronka, Y. Yamazaki, K.-H. Yoo
Nuclear Inst. and Methods in Physics Research, A 985 (2020) 164657
(pdf)
doi.org/10.1016/j.nima.2020.164657
Investigation of buffer gas trapping of positrons
C. J. Baker, C. A. Isaac, D. Edwards, H. T. Evans, R. Clayton, D. P. van der Werf and M Charlton
J. Phys. B: At. Mol. Opt. Phys.53 (2020) 185201
(pdf)
doi.org/10.1088/1361-6455/aba10c5
Investigation of the fine structure of antihydrogen
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Granum, J. S. Hangst, W. N. Hardy, M. E. Hayden, E. D. Hunter, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, S. Jonsell, A. Khramov, P. Knapp, L. Kurchaninov, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, J. J. Munich, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, D. M. Starko, G. Stutter, T. D. Tharp, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
Nature 578 (2020) 375 (pdf)
doi:10.1038/s41586-020-2006-5
Accumulation of Positrons from a LINAC Based Source
S. Niang, M. Charlton, J.J. Choi, M. Chung, P. Cladé, P. Comini, P. Crivelli, P.-P. Crépin, O. Dalkarov, P. Debu, L. Dodd, A. Douillet, P. Froehlich, J. Gafriller, S. Guellati, J. Heinrich, P.-A. Hervieux, L. Hilico, A. Husson, P. Indelicato, G. Janka, S. Jonsell, J.-P. Karr, B.H. Kim, E-S. Kim, S.K. Kim, A. Kleyheeg, Y. Ko, T. Kosinski, N. Kuroda, B. Latacz, H. Lee, J. Lee, A.M.M. Leite, E. Lim, L. Liszkay, T. Louvradoux, D. Lunney, K. Lévéque, G. Manfredi, B. Mansoulié, M. Matusiak, G. Mornacchi, V.V. Nesvizhevsky, F. Nez, R. Nishi, S. Nourbaksh, K.H. Park, N. Paul, P. Pérez, B. Radics, C. Regenfus, S. Reynaud, J.Y. Roussé, A. Rubbia, J. Rzadkiewicz, Y. Sacquin, F. Schmidt-Kaler, M. Staszczak, B. Tuchming, B. Vallage, D.P. van der Werf, A. Voronin, A. Welker, S. Wolf, D. Won, S. Wronka, Y. Yamazaki, K.H. Yoo (GBAR Collaboration) and C.J. Baker
Acta Phys. Pol. A 137 (2020) 164 (pdf)
doi:10.12693/APhysPolA.137.164
Development of a PbWO4 Detector for Single-Shot Positron Annihilation Lifetime Spectroscopy at the GBAR Experiment
B.H. Kim, J.J. Choi, M. Chung, P. Cladé, P. Comini, P. Crivelli, P-P. Crépin, O. Dalkarov, P. Debu, L. Dodd, A. Douillet, P. Froehlich, S. Guellati, J. Heinrich, P.-A. Hervieux, L. Hilico,h, A. Husson, P. Indelicato, G. Janka, S. Jonsell, J.-P. Karr, E.-S. Kim, S.K. Kim, Y. Ko, T. Kosinski, N. Kuroda, B. Latacz, H. Lee, J. Lee, A.M.M. Leite, E. Lim, L. Liszkay, T. Louvradoux, D. Lunney, K. Lévêque, G. Manfredi, B. Mansoulié, M. Matusiak, G. Mornacchi, V.V. Nesvizhevsky, F. Nez, S. Niang, R. Nishi, S. Nourbaksh, P. Lotrus, K.H. Park, N. Paul, P. Pérez, B. Radics, C. Regenfus, S. Reynaud, J.-Y. Roussé, A. Rubbia, J. Rzadkiewicz, Y. Sacquin, F. Schmidt-Kaler, M. Staszczak, B. Tuchming, B. Vallage, D.P. van der Werf, A. Voronin, A. Welker, S. Wolf, D. Won, S. Wronka, Y. Yamazaki and K.-H. Yoo
Acta Phys. Pol. A 137 (2020) 122 (pdf)
doi:10.12693/APhysPolA.137.122
None
Observation of the 1S–2P Lyman-α transition in antihydrogen
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, M. E. Hayden, E. D. Hunter, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, S. Jonsell, A. Khramov, P. Knapp, L. Kurchaninov, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, J. J. Munich, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, D. M. Starko, G. Stutter, C. So, T. D. Tharp, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
Nature 561 (2018) 211 (pdf)
doi:10.1038/s41586-018-0435-1
Characterization of the 1S–2S transition in antihydrogen
M. Ahmadi, B.X.R. Alves, C.J. Baker, W. Bertsche, A. Capra, C. Carruth, C.L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M.C. Fujiwara, D.R. Gill, J.S. Hangst, W.N. Hardy, M.E. Hayden, C.A. Isaac, M.A. Johnson, J.M. Jones, S.A. Jones, S. Jonsell, A. Khramov, P. Knapp, L. Kurchaninov, N. Madsen, D. Maxwell, J.T.K. McKenna, S. Menary, T. Momose, J.J. Munich, K. Olchanski, A. Olin, P. Pusa, C.Ø. Rasmussen, F. Robicheaux, R.L. Sacramento, M. Sameed, E. Sarid, D.M. Silveira, G. Stutter, C. So, T.D. Tharp, R.I. Thompson, D.P. van der Werf and J.S. Wurtele
Nature 557 (2018) 71 (pdf)
doi:10.1038/s41586-018-0017-2
Excitation of positronium: from the ground state to Rydberg levels
C. J. Baker, D. Edwards, C. A. Isaac, H. H. Telle, D. P. van der Werf and M. Charlton
J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 035006 (pdf)
doi:10.1088/1361-6455/aa9aa2
Enhanced Control and Reproducibility of Non-Neutral Plasmas
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, M. A. Johnson, S. A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, M. Mathers, D. Maxwell, J. T. K. McKenna, S. Menary, T. Momose, J. J. Munich, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, G. Stutter, T. D. Tharp, J. E. Thompson, R. I. Thompson, D. P. van der Werf, and J. S. Wurtele
Phys. Rev. Lett. 120 (2018) 025001 (pdf)
doi:10.1103/PhysRevLett.120.0250012
Antihydrogen accumulation for fundamental symmetry tests
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, E. Butler, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, A. Ishida, M. A. Johnson, S. A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, M. Mathers, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, J. J. Munich, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, S. Stracka, G. Stutter, C. So, T. D. Tharp, J. E. Thompson, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
Nature Communications 8 (2017) 681 (pdf)
doi:10.1038/s41467-017-00760-9
Observation of the 1S–2S transition in trapped antihydrogen
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, E. Butler, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, A. Ishida, M. A. Johnson, S. A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, M. Mathers, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, J. J. Munich, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, S. Stracka, G. Stutter, C. So, T. D. Tharp, J. E. Thompson, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
Nature 541 (2017) 506 (pdf)
doi:10.1038/nature21040
Observation of the hyperfine spectrum of antihydrogen
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, E. Butler, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, A. Ishida, M. A. Johnson, S. A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, M. Mathers, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, J. J. Munich, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, S. Stracka, G. Stutter, C. So, T. D. Tharp, J. E. Thompson, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
Nature 548 (2017) 66 (pdf)
doi:10.1038/nature23446
The role of antihydrogen formation in the radial transport of antiprotons in positron plasmas
S Jonsell, M Charlton and D P van der Werf
Journal of Physics B: Atomic, Molecular and Optical Physics 49 (2016) 134004(pdf)
doi:10.1088/0953-4075/49/13/134004
An improved limit on the charge of antihydrogen from stochastic acceleration
M. Ahmadi, M. Baquero-Ruiz, W. Bertsche, E. Butler, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, A. E. Charman, S. Eriksson, L. T. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, A. Ishida, S. A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, D. Maxwell,
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Nature 529 (2016) 373 (pdf)
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Exciting positronium with a solid-state UV laser: the Doppler-broadened Lyman-α transition
A. Deller, D. Edwards, T. Mortensen, C. A. Isaac, D. P. van der Werf, H. H. Telle and M. Charlton
J. Phys. B: At. Mol. Opt. Phys. 48 (2015) 175001 (pdf)
doi:10.1088/0953-4075/48/17/175001
Advances in antihydrogen physics
M. Charlton and D. P. van der Werf
Science Progress 98 (2015) 34 (pdf)
doi:10.3184/003685015X14234978376369
Antiproton cloud compression in the ALPHA apparatus at CERN
A. Gutierrez, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, C. Burrows, E. Butler, A. Capra, C. L. Cesar, M. Charlton, R. Dunlop, S. Eriksson, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, E. Sarid, D. M. Silveira, C. So, S. Stracka, J. Tarlton, T. D. Tharp, R. I. Thompson, P. Tooley, M. Turner, D. P. van der Werf, J. S. Wurtele, A. I. Zhmoginov
Hyperfine Interactions ??(2015) 1 (pdf)
doi:10.1007/s10751-015-1202-4
The GBAR antimatter gravity experiment
P. Pérez, D. Banerjee, F. Biraben, D. Brook-Roberge, M. Charlton, P. Cladé, P. Comini, P. Crivelli, O. Dalkarov, P. Debu, A. Douillet, G. Dufour, P. Dupré, S. Eriksson, P. Froelich, P. Grandemange, S. Guellati, R. Guérout, J. M. Heinrich, P.-A. Hervieux, L. Hilico, A. Husson, P. Indelicato, S. Jonsell, J.-P. Karr, K. Khabarova, N. Kolachevsky, N. Kuroda1, A. Lambrecht, A. M. M. Leite, L. Liszkay, D. Lunney, N. Madsen, G. Manfredi, B. Mansoulié, Y. Matsuda, A. Mohri, T. Mortensen, Y. Nagashima, V. Nesvizhevsky, F. Nez, C. Regenfus, J.-M. Rey, J.-M. Reymond, S. Reynaud, A. Rubbia, Y. Sacquin, F. Schmidt-Kaler, N. Sillitoe, M. Staszczak, C. I. Szabo-Foster, H. Torii, B. Vallage, M. Valdes, D. P. Van der Werf, A. Voronin, J. Walz, S. Wolf, S. Wronka, Y. Yamazaki
Hyperfine Interactions 233(2015) 21 (pdf)
doi:10.1007/s10751-015-1154-8
Radially selective inward transport of positrons in a Penning–Malmberg trap
A. Deller, T. Mortensen, C. A. Isaac, D. P. van der Werf and M. Charlton
New Journal of Physics 16 (2014) 073028 (pdf)
doi:10.1088/1367-2630/16/7/073028
An experimental limit on the charge of antihydrogen
C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, E. Butler, A. Capra, C. L. Cesar, M. Charlton, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D.R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, T. D. Tharp, R. I. Thompson, D. P. van der Werf, Z. Vendeiro, J. S. Wurtele, A. I. Zhmoginov and A. E. Charman
Nature Communications 5 (2014) 3955 (pdf)
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In situ electromagnetic field diagnostics with an
electron plasma in a Penning–Malmberg trap
C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, E. Butler, A. Capra, C. L. Cesar, M. Charlton, A. Deller, N. Evetts, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill1, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, S. Stracka, T. Tharp, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
New Journal of Physics 16 (2014) 013037 (pdf)
doi:10.1088/1367-2630/16/1/013037
The ALPHA antihydrogen trapping apparatus
C. Amole, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, A. Capra, P. T. Carpenter, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Escallier, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, J. L. Hurt, R. Hydomako, C. A. Isaac, M. J. Jenkins, S. Jonsell, L. V. Jørgensen, S. J. Kerrigan, L. Kurchaninov, N. Madsen, A. Marone, J. T. K. McKenna, S. Menary, P. Nolan, K. Olchanski, A.Olin, B. Parker, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D.Seddon, S. Seif El Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, J. Thornhill, D. Wells, D. P.van der Werf, J. S. Wurtele, Y. Yamazaki
Nucl. Instr. and Meth. in Phys. Res. A 735 (2014) 319 (pdf)
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The Gbar project, or how does antimatter fall?
P. Indelicato, G. Chardin, P. Grandemange, D. Lunney, V. Manea, A. Badertscher, P. Crivelli, A. Curioni, A. Marchionni, B. Rossi, A. Rubbia, V. Nesvizhevsky, D. Brook-Roberge, P. Comini, P. Debu, P. Dupré, L. Liszkay, B. Mansoulié, P. Pérez, J.-M. Rey, B. Reymond, N. Ruiz, Y. Sacquin, B. Vallage, F. Biraben, P. Cladé, A. Douillet, G. Dufour, S. Guellati, L. Hilico, A. Lambrecht, R. Guérout, J.-P. Karr, F. Nez, S. Reynaud, C. I. Szabo, V.-Q. Tran, J. Trapateau, A. Mohri, Y. Yamazaki, M. Charlton, S. Eriksson, N. Madsen, D.P. van der Werf, N. Kuroda, H. Torii, Y. Nagashima, F. Schmidt-Kaler, J. Walz, S. Wolf, P.-A. Hervieux, G. Manfredi, A. Voronin, P. Froelich, S. Wronka, M. Staszczak
Hyperfine Interact? (2014) ?
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The Gbar Experiment
D.P. van der Werf (for the GBAR Collaboration)
Int. J. Mod. Phys. Conf. Ser. 30 (2014) 1460263 (pdf)
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Silicon vertex detector upgrade in the ALPHA experiment
C. Amole, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, C. Burrows, E. Butler, A. Capra, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, S. Stracka, J. A. Sampson, E. Sarid, D. Seddon, D. M. Silveira, C. So, R. I. Thompson, T. Tharp, J. Thornhill, M. P. Tooley, D. P. van der Werf, D. Wells
Nucl. Instr. and Meth. in Phys. Res. A 732 (2013) 134 (pdf)
doi:10.1016/j.nima.2013.05.188
Positron annihilation in small molecules
M. Charlton, T. Giles, H. Lewis and D. P. van der Werf
J. Phys. B: At. Mol. Opt. Phys. 46 (2013) 195001 (pdf)
doi:10.1088/0953-4075/46/19/195001
Autoresonant-spectrometric determination of the residual gas composition in the ALPHA experiment apparatus
C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, E. Butler, A. Capra1, C. L. Cesar, S. Chapman, M. Charlton, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, P. Nolan1, K. Olchanski, A. Olin, A. Povilus, P. Pusa, C. Ø. Rasmussen, F. Robicheaux1, E. Sarid, D. M. Silveira, S. Stracka, C. So, R. I. Thompson, M. Turner, D. P. van der Werf, J. S. Wurtele, A. Zhmoginov
Rev. Sci. Instrum. 84 (2013) 065110 (pdf)
doi:10.1063/1.4811527
Description and first application of a new technique
to measure the gravitational mass of antihydrogen
C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, E. Butler, A. Capra, C. L. Cesar,
M. Charlton, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst,
W. N. Hardy, M. E. Hayden, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen,
J. T. K. McKenna, S. Menary, S. C. Napoli, P. Nolan, A. Olin, P. Pusa, C.Ø. Rasmussen,
F. Robicheaux, E. Sarid, D. M. Silveira, C. So, R. I. Thompson, D. P. van der Werf, J. S. Wurtele1, A. I. Zhmoginov1 (ALPHA collaboration) and A. E. Charman
Nature Communications 4 (2013) 1785 (pdf)
doi:10.1038/ncomms2787
Experimental and computational study of the injection of antiprotons into a positron plasma for antihydrogen production
C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, E. Butler, A. Capra, C. L. Cesar, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, C. R. Shields, D. M. Silveira, C. So, S. Stracka, R. I. Thompson, D. P. van der Werf, J. S. Wurtele, A. Zhmoginov, (ALPHA collaboration), and L. Friedland
Physics of Plasmas 20 (2013) 043510 (pdf)
doi:10.1063/1.4801067
Antihydrogen in a bottle
M. Charlton, S. Eriksson, C. A. Isaac, N. Madsen and D. P. van der Werf
Physics Education 48 (2013) 212 (pdf)
doi:10.1088/0031-9120/48/2/212
Manipulation of the magnetron orbit of a positron cloud in a Penning trap
T. Mortensen, A. Deller, C. A. Isaac, D. P. van der Werf, M. Charlton and J. R. Machacek
Physics of Plasmas 20 (2013) 012124 (pdf)
doi:10.1063/1.4789880
Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen
T. Friesen, C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, A. Capra, C. L. Cesar, M. Charlton, A. Deller, N. Evetts, S. Eriksson, J. Fajans, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, S. Jonsell, L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, S. Stracka, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
AIP Conf. Proc. 1521 (2013) 123 (pdf)
doi:10.1063/1.4796068
Evaporative cooling of antiprotons for the production of trappable antihydrogen
D. M. Silveira, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, M. E. Hayden, R. Hydomako, S. Jonsell, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
AIP Conf. Proc. 1521 (2013) 165 (pdf)
doi:10.1063/1.4796068
Further evidence for low-energy protonium production in vacuum
E. Lodi Rizzini, L. Venturelli, N. Zurlo, M. Charlton, C. Amsler, G. Bonomi, C. Canali, C. Carraro, A. Fontana, P. Genova, R. Hayano, L.V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, M. Macr´ı, G. Manuzio, P. Montagna, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D.P. van der Werf
Eur. Phys. J. Plus 127 (2012) 124 (pdf)
doi:10.1140/epjp/i2012-12124-9
Antihydrogen annihilation reconstruction with the ALPHA silicon detector
G. B. Andresen, M. D. Ashkezar, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, R. S. Hayano, A. J. Humphries, R. Hydomako, S. Jonsell, L. V. Jørgensen, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, E.Sarid, S. Seif el Nasr,D. M. Silveira, C. Sof, J. W. Storey, R. I. Thompson, D. P. van der Werf and Y. Yamazaki
Nucl. Instr. and Meth. in Phys. Res. A 684 (2012) 73 (pdf)
doi:10.1016/j.nima.2012.04.082
The behaviour of positron clouds in the single-particle regime under the influence of rotating wall electric fields
D. P. van der Werf, C. A. Isaac, C. J. Baker, T. Mortensen, S. J. Kerrigan and M. Charlton
New Journal of Physics 14 (2012) 075022 (pdf)
doi:10.1088/1367-2630/14/7/075022
Resonant Quantum Transitions In Trapped Antihydrogen Atoms
C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, A. Capra, C. L. Cesar, M. Charlton, A. Deller, P. H. Donnan, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, C. A. Isaac, S. Jonsell,L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, C. R. Shields, D. M. Silveira,S. Stracka, C. So, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
Nature 483 (2012) 439 (pdf)
doi:10.1038/nature10942
Discriminating Between Antihydrogen And Mirror-Trapped Antiprotons In A Minimum-B Trap
C. Amole, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, A. Capra, C. L. Cesar, M. Charlton, A. Deller, P. H. Donnan, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, C. A. Isaac, S. Jonsell,L. Kurchaninov, A. Little, N. Madsen, J. T. K. McKenna, S. Menary, S. C. Napoli, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, C. R. Shields, D. M. Silveira,S. Stracka, C. So, R. I. Thompson, D. P. van der Werf and J. S. Wurtele
New Journal of Physics 14 (2012) 105010 (pdf)
doi:10.1088/1367-2630/14/1/015010
Trapped antihydrogen
E. Butler, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, R. Hydomako, M. J. Jenkins, S. Jonsell, L. V. Jørgensen, S. L. Kemp, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, S. Seif el Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Hyperfine Interactions 212 (2012) 15 (pdf)
doi:10.1007/s10751-011-0396-3
Antihydrogen formation by autoresonant excitation of antiproton plasmas
W. A. Bertsche, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, P. D. Bowe, P. T. Carpenter, E. Butler, C. L. Cesar, S. F. Chapman, M. Charlton, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, J. L. Hurt, R. Hydomako, S. Jonsell, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van derWerf, J. S. Wurtele and Y. Yamazaki
Hyperfine Interactions 212 (2012) 61
(pdf)
doi:10.1007/s10751-011-0383-8
Progress towards microwave spectroscopy of trapped antihydrogen
M. D. Ashkezari, G. B. Andresen, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar,S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Hyperfine Interactions 212 (2012) 81
(pdf)
doi:10.1007/s10751-011-0449-7
Antihydrogen detection in ALPHA
R. Hydomako, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, E. Butler, P. D. Bowe, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, S. Jonsell, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van derWerf, J. S. Wurte and Y. Yamazaki
Hyperfine Interactions 212 (2012) 91 (pdf)
doi:10.1007/s10751-011-0456-8
Alternative Method For Reconstruction Of Antihydrogen Annihilation Vertices
C. Amole, M. D. Ashkezari, G. B. Andresen , M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtel and Y. Yamazaki
Hyperfine Interactions 212 (2012) 101 (pdf)
doi:10.1007/s10751-012-0588-5
Microwave-plasma interactions studied via mode diagnostics in ALPHA
T. Friesen, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, S. Eriksson, J. Fajans, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Hyperfine Interactions 212 (2012) 117 (pdf)
doi:10.1007/s10751-012-0585-8
Compression of positron clouds using rotating wall electric fields
D. P. van der Werf, C. A. Isaac, C. J. Baker, T. Mortensen and M. Charlton
Hyperfine Interactions 212 (2012) 125
(pdf)
doi:10.1007/s10751-011-0384-7
The ALPHA – detector: Module Production and Assembly
G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, R. Hydomako, M. J. Jenkins, S. Jonsell, L. V. Jørgensen, L. Kurchaninov, N. Madsen, J. T. K. McKenna, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, J. Sampson, E. Sarid, D. Seddon, S. Seif el Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, J. Thornhill, D. Wells, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
JINST 7 (2012) C01051 (pdf)
doi:10.1088/1748-0221/7/01/C01051
The temperature and density dependence
of positron annihilation in CO2 and SF6
M. G. Colucci, D. P. van der Werf and M Charlton
J. Phys. B: At. Mol. Opt. Phys. 44 (2011) 175204 (pdf)
doi:10.1088/0953-4075/44/17/175204
Compression of Positron Clouds in the Independent Particle Regime
C. A. Isaac, C. J. Baker, T. Mortensen, D. P. van der Werf and M. Charlton
Phys. Rev. Lett.107 (2011) 033201 (pdf)
doi:10.1103/PhysRevLett.107.033201
Confinement of antihydrogen for 1,000 seconds
G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, S. L. Kemp, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazai
Nature Physics 7 (2011) 558–564 (pdf)
doi:10.1038/nphys2025
Centrifugal Separation And Equilibration Dynamics In An Electron-Antiproton Plasma
G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P .D. Bowe, E. Butler, C .L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M .C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, N. Madsen, S. Menary, P. Nolan, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Phys. Rev. Lett. 106 (2011) 145001 (pdf)
doi:10.1103/PhysRevLett.106.145001
Autoresonant Excitation of Antiproton Plasmas
G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, P. T. Carpenter, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, J. L. Hurt, R. Hydomako, S. Jonsell, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele, and Y. Yamazaki
Phys. Lett. B 106 (2011) 025002 (pdf)
doi: 10.1103/PhysRevLett.106.025002
Search for trapped antihydrogen
G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P .D. Bowe, C .C. Bray, E. Butler, C .L. Cesar, S. Chapman, M. Charlton, J. Fajans, T. Friesen, M .C. Fujiwara, D .R. Gill, J .S. Hangst, W .N. Hardy, R .S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, L. V. Jørgensen, L. Kurchaninov , R. Lambo, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, D. Wilding, J .S. Wurtele and Y. Yamazaki
Phys. Lett. B 685 (2010) 141 (pdf)
doi: 10.1016/j.physletb.2010.11.004
Search For Trapped Antihydrogen In ALPHA
N. Madsen, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, L. V. Jørgensen, L. Kurchaninov, R. Lambo, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele, and Y. Yamazaki
Can. Jour. Phys. 89 (2011) 7 (pdf)
doi:10.1139/P10-085
Antiparticle sources for antihydrogen production and trapping
M. Charlton, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, L. V. Jørgensen, S. J. Kerrigan, L. Kurchaninov, R. Lambo, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, D. Wilding, J. S. Wurtele and Y. Yamazaki
J. Phys. Conf. Series 262 (2011) 0
Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest (GBAR)
G. Chardin, P. Grandemange, D. Lunney, V. Manea (CSNSM, CNRS : UMR8609 – IN2P3 – Université Paris Sud - Paris XI, France)
A. Badertscher, P. Crivelli, A. Curioni, A. Marchionni, B. Rossi, A. Rubbia (IPP, ETHZ, CH-8093 Zürich, Switzerland)
V. Nesvizhevsky (Institut Laue-Langevin (ILL), 6 rue Jules Horowitz, F-38042 Grenoble, France)
P-A. Hervieux, G. Manfredi (IPCMS, 23 rue du Loess, F-67037 Strasbourg, France)
P. Comini, P. Debu, P. Dupré, L. Liszkay, B. Mansoulié, P. Pérez, J-M. Rey, N. Ruiz, Y. Sacquin (IRFU, CEA, Saclay, F-91191 Gif-sur-Yvette Cedex, France)
A. Voronin (P. N. Lebedev Physical Institute, 53 Leninsky Prospect, 117924 Moscow, Russia)
F. Biraben, P. Cladé, A. Douillet, A. Gérardin, S. Guellati, L. Hilico, P. Indelicato, A. Lambrecht, R. Guérout, J-P. Karr, F. Nez, S. Reynaud, V-Q. Tran (LKB, CNRS : UMR8552 – Université Pierre et Marie Curie - Paris VI – Ecole Normale Supérieure de Paris, France, Université d’Evry Val d’Essonne F-91025, France)
A. Mohri, Y. Yamazaki (Atomic Physics Laboratory, RIKEN, 2-1 Hirosawa,Wako, Saitama 351-0198, Japan)
M. Charlton, S. Eriksson, N. Madsen, D.P. van der Werf (Department of Physics, Swansea University, Swansea SA2 8PP, UK)
N. Kuroda, H. Torii (Institute of Physics, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan)
Y. Nagashima (Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan)
SPSC-P-342 (2011) (pdf)
Trapped antihydrogen
G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. Humphries, R. Hydomako, M. J. Jenkins, S. Jonsell, L. V. Jørgensen, L. Kurchaninov, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif el Nasr, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazak
Nature 468 (2010) 673 (pdf)
doi: 10.1038/nature09610
Evaporative Cooling of Antiprotons to Cryogenic Temperatures
G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. Humphries, R. Hydomako, S. Jonsell, L. Kurchaninov, R. Lambo, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, D. Wilding, J. S. Wurtele and Y. Yamazaki
Phys. Rev. Lett. 105 (2010) 013003 (pdf)
doi: 10.1103/PhysRevLett.105.013003
Antihydrogen formation dynamics in a multipolar neutral anti-atom trap
G. B. Andresen, W. Bertsche, P. D. Bowe, C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, L. V. Jørgensen, S. J. Kerrigan, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Phys. Lett. B 685 (2010) 141 (pdf)
doi: 10.1016/j.physletb.2010.01.066
Towards Antihydrogen Trapping And Spectroscopy At ALPHA
E. Butler, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz,W. Bertsche,P. D. Bowe, C. C. Bray, C. L. Cesar, S. Chapman, M. Charlton,J. Fajans,T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell, L. Kurchaninov, R. Lambo, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. van der Werf, D. Wilding, J. S. Wurtel and Y. Yamazaki
Hyperfine Interactions (2011) (pdf)
Antimatter transport processes
D. P. van der Werf, G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, S. Jonsell,, L. V. Jørgensen, L. Kurchaninov, R. Lambo, N. Madsen, S. Menary, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, J. S. Wurtele and Y. Yamazaki
J. Phys. Conf. Series 257 (2010) 012004 (pdf)
doi: 10.1088/1742-6596/257/1/012004
Simulations of antihydrogen formation in a nested penning trap
S. Jonsell, D.P. van der Werf and M. Charlton
J. Phys. Conf. Series 199 (2010) 012008 (pdf)
doi: 10.1088/1742-6596/199/1/012008
Magnetised Positronium
D. P. van der Werf, C. J. Baker, D. C. S. Beddows, P. R. Watkeys, C. A. Isaac, S. J. Kerrigan, M. Charlton and H.H. Telle
J. Phys. Conf. Series 199 (2010) 012005 (pdf)
doi: 10.1088/1742-6596/199/1/012005
Antihydrogen Physics
M. Charlton and D. P. van der Werf
Proceedings of the International
School of Physics "Enrico Fermi"
Course CLXXIV "Physics with Many Positrons" edited by R. S. Brusa, A. Dupasquier and A. P. Mills Jr
IOS, Amsterdam; Sif Bologna (2010) 189
doi: 10.3254/978-1-60750-646-1-189
Antiproton, positron, and electron imaging with a microchannel plate/phosphor detector
G. B. Andresen, W. Bertsche, P. D. Bowe, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, M. C. Fujiwara, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, L. V. Jørgensen, S. J. Kerrigan, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K. Olchanski, A. Olin, A. P. Povilus, P. Pusa, E. Sarid, S. Seif El Nasr, D. M. Silveira, J. W. Storey, R. I. Thompson,
D. P. van der Werf and Y. Yamazaki
Rev. Sci. Instrum. 80 (2009) 123701 (pdf)
doi: 10.1063/1.3266967
Magnetic multipole induced zero-rotation frequency bounce-resonant loss in a Penning–Malmberg trap used for antihydrogen trapping
G. B. Andresen, W. Bertsche, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, M. C. Fujiwara, D. R. Gill, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, L. V. Jørgensen, S. J. Kerrigan, J. Keller, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Phys. Plasmas 16 (2009) 100702 (pdf)
doi: 10.1063/1.3258840
Simulation of the formation of antihydrogen in a nested Penning trap: effect of positron density
S. Jonsell, D. P. van der Werf, M. Charlton and F. Robicheaux
J. Phys. B: At. Mol. Opt. Phys. 42 (2009) 215002 (pdf)
doi: 10.1088/0953-4075/42/21/215002
Antihydrogen Physics at ALPHA/CERN
C. L. Cesar, G. B. Andresen, W. Bertsche, P. D. Bowe, C.C. Bray, E. Butler, S. Chapman, M. Charlton, J. Fajans, M. C. Fujiwara, R. Funakoshi, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, M. J. Jenkins, L. V. Jørgensen, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K. Olchanski, A. Olin, R. D. Page, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele, Y. Yamazaki
Canadian Journal of Physics 87 (2009) 791
doi:10.1139/P08-148
Weakly bound positron–electron pairs in a strong magnetic field
C. J. Baker, D. P. van der Werf, D. C. S. Beddows, P. R. Watkeys, C. A. Isaac, S. J. Kerrigan, M. Charlton and H. H. Telle
J. Phys. B: At. Mol. Opt. Phys. 41 (2008) 245003 (pdf)
doi: 10.1088/0953-4075/41/24/245003
Temporally Controlled Modulation of Antihydrogen Production and the Temperature Scaling of Antiproton-Positron Recombination
M. C. Fujiwara, M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi-Rizzini, M. Macri, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola,
L. Venturelli, D. P. van der Werf, Y. Yamazaki and N. Zurlo
Phys. Rev. Lett. 101 (2008) 053401 (pdf)
doi: 10.1103/PhysRevLett.101.053401
Antihydrogen for precision tests in physics
M. Charlton, S. Jonsell, L. V. Jørgensen, N. Madsen and D. P. van der Werf
Contemporary Physics 49 (2008) 29 (pdf)
doi: 10.1080/00107510802038448
Compression of Antiproton Clouds for Antihydrogen Trapping
G. B. Andresen, W. Bertsche, P. D. Bowe, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, M. C. Fujiwara, R. Funakoshi, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, R. Hydomako, M. J. Jenkins, L. V. Jørgensen, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, J. W. Storey, R. I. Thompson,
D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Phys. Rev. Lett. 100 (2008) 203401 (pdf)
doi: 10.1103/PhysRevLett.100.203401
A novel antiproton radial diagnostic based on octupole induced ballistic loss
G. B. Andresen, W. Bertsche, P. D. Bowe, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, M. C. Fujiwara, R. Funakoshi, D. R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E. Hayden, A. J. Humphries, R. Hydomako, M. J. Jenkins, L. V. Jørgensen, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K. Olchanski, A. Olin, R. D. Page, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D. M. Silveira, J. W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Phys. Plasmas 15 (2008) 032107 (pdf)
doi: 10.1063/1.2899305
Production of Antihydrogen at Reduced Magnetic Field for Anti-atom Trapping
G. B. Andresen, W. Bertsche, A. Boston, P. D. Bowe, C. L. Cesar, S. Chapman, M. Charlton, M. Chartier, A. Deutsch, J. Fajans, M. C. Fujiwara, R. Funakoshi, D. R. Gill, K. Gomberoff, J. S. Hangst, R. S. Hayano, R. Hydomako, M. J. Jenkins, L.V. Jørgensen, L. Kurchaninov, N. Madsen, P. Nolan, K. Olchanski, A. Olin, A. Povilus, F. Robicheaux, E. Sarid, D. M. Silveira, J.W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
J. Phys. B: At. Mol. Opt. Phys. 41 (2008) 011001 (pdf)
doi: 10.1088/0953-4075/41/1/011001
Towards trapped antihydrogen
L.V. Jørgensen, G. Andresen, W. Bertsche, A. Boston, P.D. Bowe, C.L. Cesar, S. Chapman, M. Charlton, J. Fajans, M.C. Fujiwara, R. Funakoshi, D.R. Gill, J.S. Hangst, R.S. Hayano, R. Hydomako, M.J. Jenkins, L. Kurchaninov, N. Madsen, P. Nolan, K. Olchanski, A. Olin, R.D. Page, A. Povilus, F. Robicheaux, E. Sarid,
D.M. Silveira, J.W. Storey, R.I. Thompson, D.P. van der Werf, J.S. Wurtele, Y. Yamazaki
Nucl. Instr. and Meth. in Phys. Res. B 266 (2008) 357 pdf)
doi: 10.1016/j.nimb.2007.12.009
Antiproton compressionand radial
measurements
G. B. Andresen, W. Bertsche, P. D. Bowe, C. C. Bray, E. Butler, C. L.
Cesar, S. Chapman, M. Charlton, J. Fajans, M. C. Fujiwara, R.
Funakoshi, D.R. Gill, J.S. Hangst, W. N. Hardy, R. S. Hayano, M. E.
Hayden, A. J. Humphries, R. Hydomako, M. J. Jenkins, L. V.
Jørgensen, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K.
Olchanski, A. Olin, R. D. Page, A. Povilus, P. Pusa, F. Robicheaux,
E. Sarid, S. Seif El Nasrk, D. M. Silveira, J. W. Storey, R. I.
Thompson, D.P. van der Werf, J.S. Wurteleand Y. Yamazaki
Conference on Cold Antimatter Plasmas and Application to Fundamental
Physics, Okinawa, JAPAN, FEB 20-22, 2008 AIP Conf. Proc. 1037 (2008) 96 (pdf)
doi: 10.1063/1.2977860
Particle physics aspects of antihydrogen studies with ALPHA at CERN
M. C. Fujiwara, G. B. Andresen, W. Bertsche, P. D. Bowe, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, M.
Charlton, J. Fajans, R. Funakoshi, D. R, Gill,
J. S. Hangst, W. Hardy R. S. Hayano, M. E. Hayden,
A. J. Humphries, R. Hydomako, M. J. Jenkins, L. V. Jørgensen, L. Kurchaninov, W. Lai, K. Lambo, N. Madsen, P.
Nolan, K. Olchanski, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasrg, D. M. Silveira, J. W. Storey, R. I. Thompson, D. P. van der Werf, L.
Wasilenko, J. S. Wurtele and Y. Yamazaki
Conference on Cold Antimatter Plasmas and Application to Fundamental
Physics, Okinawa, JAPAN, FEB 20-22, 2008 AIP Conf. Proc. 1037 (2008) 208 (pdf)
doi: 10.1063/1.2977840
First Attempts at Antihydrogen Trapping in ALPHA
G. B. Andresen, W. Bertsche, P.D. Bowe, C. C. Bray, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, J. Fajans, M.C. Fujiwara, R. Funakoshi, D.R. Gill, J. S. Hangst, W. N. Hardy, R. S. Hayano, M. E.
Hayden, A.J. Humphries, R. Hydomako, M.J. Jenkins, L. V.
Jørgensen, L. Kurchaninov, R. Lambo, N. Madsen, P. Nolan, K.
Olchanski, A. Olin, R. D. Page, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, S. Seif El Nasr, D.M. Silveira, J.W. Storey, R. I.
Thompson, D.P. van derWerf, J. S. Wurtele and Y. Yamazaki
Conference on Cold Antimatter Plasmas and Application to Fundamental
Physics, Okinawa, JAPAN, FEB 20-22, 2008 AIP Conf. Proc. 1037 (2008) 241 (pdf)
doi: 10.1063/1.2977843
Positron Plasma Control Techniques For The Production Of Cold Antihydrogen
R. Funakoshi, M. Amoretti, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrì, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, L. G. C. Posada, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf, Y. Yamazaki and N. Zurlo
Phys. Rev. A 76 (2007) 012713 (pdf)
doi:10.1103/PhysRevA.76.012713
Antimatter Plasmas in a Multipole Trap for Antihydrogen
G. Andresen, W. Bertsche, A. Boston, P. D. Bowe, C. L. Cesar, S. Chapman, M. Charlton, M. Chartier, A. Deutsch, J. Fajans, M. C. Fujiwara, R. Funakoshi, D. R. Gill, K. Gomberoff, J. S. Hangst, R. S. Hayano, R. Hydomako, M. J. Jenkins, L.V. Jørgensen, L. Kurchaninov, N. Madsen, P. Nolan, K. Olchanski, A. Olin, A. Povilus, F. Robicheaux, E. Sarid, D. M. Silveira, J.W. Storey, H. H. Telle, R. I. Thompson, D. P. van der Werf, J. S. Wurtele, and Y. Yamazaki
Phys. Rev. Lett. 98 (2007) 023402 (pdf)
doi:10.1103/PhysRevLett.98.023402
Protonium production in ATHENA
L. Venturelli, M. Amoretti, C. Amsler, G. Bonomi, C. Carraro, C.L. Cesar, M. Charlton, M. Doser, A. Fontana, R. Funakoshi, P. Genova, R.S. Hayano, L.V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macr`ı, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, L.G. Posada, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, D.P. Van der Werf, A. Variola, Y. Yamazaki and N. Zurlo
Nucl. Instr. and Meth. in Phys. Res. B 261 (2007) 40 (pdf)
doi:10.1016/j.nimb.2007.04.135
Search For Laser-Induced Formation Of Antihydrogen Atoms
M. Amoretti, C. Amsler, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, A. M. Ejsing, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, E. Lodi Rizzini, M. Macri, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, L. G. C. Posada, H. Pruys, C. Regenfus, A. Rotondi, H. H. Telle, G. Testera, D. P. Van der Werf, A. Variola, L. Venturelli, Y. Yamazaki and N. Zurlo
Phys. Rev. Lett. 97 (2006) 213401 (pdf)
doi:10.1103/PhysRevLett.97.213401
Evidence For The Production Of Slow Antiprotonic Hydrogen In Vacuum
N. Zurlo, M. Amoretti, C. Amsler, G. Bonomi, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, R. Funakoshi, P. Genova, R. S. Hayano, L.V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, L. G. Posada, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, D. P. Van der Werf, A. Variola, L. Venturelli and Y. Yamazaki
Phys. Rev. Lett. 97 (2006) 153401 (pdf)
doi:10.1103/PhysRevLett.97.153401
A Magnetic Trap for Antihydrogen Confinement
W. Bertsche, A. Boston, P.D. Bowe, C.L. Cesar, S. Chapman, M. Charlton, M. Chartier, A. Deutsch, J. Fajans, M.C. Fujiwara, R. Funakoshi, K.Gomberoff, J.S. Hangst, R.S. Hayano, M. J. Jenkins, L. V. Jørgensen, P. Ko, N. Madsen, P. Nolan, R.D. Page, L.G.C. Posada, A. Povilus, E. Sarid, D. M. Silveira, D.P. van der Werf, Y. Yamazaki, B. Parker, J. Escallier and A. Ghosh
Nucl. Instr. Meth. Phys. Res. A 56 (2006) 746 (pdf)
doi:10.1016/j.nima.2006.07.012
Three-body effects in positron annihilation on molecules
M. Charlton, D. P. van der Werf, R. J. Lewis, P. R. Watkeys and S. J. Kerrigan
J. Phys. B: At. Mol. Opt. Phys. 39 (2006) L329 (pdf)
doi:10.1088/0953-4075/39/17/L03
Design and operation of a two-stage positron accumulator
J. Clarke, D. P. van der Werf, B. Griffiths, D. C. S. Beddows, M. Charlton,
H. H. Telle and P. R. Watkeys
Rev. Sci. Instrum. 77 (2006) 063302 (pdf)
doi:10.1063/1.2206561
Sideband Cooling of Ions in a Non-Neutral Buffer Gas
A. Kellerbauer, M. Amoretti, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, R. S. Hayano, I. Johnson. L. V. Jørgensen, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, N. Madsen, D. Mitchard, P. Montagna, L. G. C. Posada, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf, Y. Yamazaki, and N. Zurlo
Phys. Rev. A 73 (2006) 062508 (pdf)
doi:10.1103/PhysRevA.73.062508
Oxide muonics: II. Modelling the electrical activity of hydrogen in wide-gap and high-permittivity dielectrics
S. F. J. Cox, J. L. Gavartin, J. S. Lord, S. P. Cottrell, J. M. Gil, H. V. Alberto, J. Piroto Duarte, R. C. Vila ̃o, N. Ayres de Campos, D. J. Keeble, E. A. Davis, M. Charlton and D. P. van der Werf
J. Phys.: Condens. Matter 18 (2006) 1079 (pdf)
doi:10.1088/0953-8984/18/3/022
Production and study of antihydrogen in the ATHENA experiment
P. Genova, M. Amoretti, C. Amsler, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, J. S.
Hangst, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, H.
Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola, L. Venturelli, Y. Yamazaki, D. P. van der Werf and N. Zurlo
Nuclear Science and Safety in Europe Book Series: NATO SECURITY THROUGH SCIENCE SERIES B: PHYSICS AND BIOPHYSICS (2006) 41
doi:10.1007/978-1-4020-4965-1_3
Production of slow protonium in vacuum
N. Zurlo, M. Amoretti, C. Amsler, G. Bonomi, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, R. Funakoshi, P. Genova, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrì, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, L. G. Posada, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, D. P. Van der Werf, A. Variola, L. Venturelli andY. Yamazaki
Hyp. Int. 172 (2007) 97 (pdf)
doi:10.1007/s10751-007-9529-0
Towards Antihydrogen Confinement With The ALPHA Antihydrogen Trap
M. C. Fujiwara, G. Andresen, W. Bertsche, A. Boston, P. D. Bowe, C. L. Cesar, S. Chapman, M. Charlton, M. Chartier, A. Deutsch, J. Fajans, R. Funakoshi, D. R. Gill, K. Gomberoff, J. S. Hangst, W. N. Hardy, R. S. Hayano, R. Hydomako, M. J. Jenkins, L.V. Jørgensen, L. Kurchaninov, N. Madsen, P. Nolan, K. Olchanski, A. Olin, R. D. Page, A. Povilus, F. Robicheaux, E. Sarid, D. M. Silveira, J.W. Storey, R. I. Thompson, D. P. van der Werf, J. S. Wurtele and Y. Yamazaki
Hyp. Int. 172 (2007) 81 (pdf)
doi:10.1007/s10751-007-9527-2
Progress with Cold Antihydrogen
M. Amoretti, C. Amsler, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, I. Johnson, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola, L. Venturelli, Y. Yamazaki, D. P. van der Werf and N. Zurlo,
In Proc. of the XIII International Workshop on Positron and Positronium Physics (Pos05), Nucl. Instr. Meth. Phys. Res. B 247 (2006) 133 (pdf)
doi:10.1016/j.nimb.2006.01.060
Oxide muonics: A new compendium
S. F. J. Cox, J. S. Lord, S. P. Cottrell, J. M. Gil, H.V. Alberto, J. Piroto Duarte, R. C. Vila ̃ , D. J. Keeble, E. A. Davis, A. Keren, R. Scheuermann, A. Stoykov, M. Charlton, D .P. van der Werf and J. Gavartin
Physica B 374 (2006) 379 (pdf)
doi:10.1016/j.physb.2005.11.106
The effect of adsorbed noble gas atoms on muonium formation at the silica surface
D. P. van der Werf, P. A. Donnelly, M. Charlton, S. P. Cottrell and S. F. J. Cox
Physica B 374 (2006) 355 (pdf)
doi:10.1016/j.physb.2005.11.094
Simple loss scaling laws for quadrupoles and higher-order multipoles used in antihydrogen traps
J. Fajans, W. Bertsche, K. Burke, A. Deutsch, S. F. Chapman, K. Gomberoff, D. P. van der Werf and J. S. Wurtele
Non-Neutral Plasma Physics VI (AIP conference proceedings) 862 (2006) 176 (pdf)
Effects of Extreme Magnetic Quadrupole Fields on Penning Traps and the Consequences for Antihydrogen Trapping
J. Fajans, W. Bertsche, K. Burke, S. F. Chapman and D. P. van der Werf
Phys. Rev. Lett. 95 (2005) 155001 (pdf)
doi:10.1103/PhysRevLett.95.155001
New Source of Dense, Cryogenic Positron Plasmas
L. V. Jørgensen, M. Amoretti, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, N. Madsen, D. Mitchard, P. Montagna, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf, and Y. Yamazaki
Phys. Rev. Lett. 95 (2005) 025002 (pdf)
doi:10.1103/PhysRevLett.95.025002
Spatial Distribution of Cold Antihydrogen Formation
N. Madsen, M. Amoretti, C. Amsler, G. Bonomi, P. D. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, D. Mitchard, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf, Y. Yamazaki and N. Zurlo
Phys. Rev. Lett. 94 (2005) 033403 (pdf)
doi:10.1103/PhysRevLett.94.033403
Results from ATHENA
A. Rotondi, M. Amoretti , C. Amsler, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, M. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jorgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. L. Rizzini, M. Macri, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, D. Mitchard, G. Testera, A. Variola, L. Venturelli, Y. Yamazaki, D. P. van der Werf , and N. Zurlo N
Low Energy Antiproton Physics, AIP Conf. Proc.796 (2005) 285 (pdf)
Hydrogen in oxides, modelled by muonium
S. F. J. Cox, S. P. Cottrell, J. S. Lord, R. C. Vilao, H. V. Alberto, J. P. Duarte, J. M. Gil, N. A. de Campos, E. A. Davis, M. Charlton, D. P. van der Werf , D. J. Keeble, R. L. Lichti and A. Weidinger A
Physics of Semiconductors, AIP Conf. Proc. 772 (2005) 193 (pdf)
Cold Antihydrogen at ATHENA:Experimental Observation and Beyond
C. L. Cesar, M. Amoretti, G. Bonomi, P.D. Bowe, C. Canali, C. Carraro, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, I. Johnson, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, N. Madsen, D.R.J. Mitchard, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf, Y. Yamazaki and N. Zurko
in Atomic Physics 19, eds. L. G. Marcassa, K. Helmerson and V. S. Bagnato, AIP Conf. Proc. 770 (2005) 33 (pdf)
Antihydrogen Production Mechanisms in ATHENA
G. Bonomi, M. Amoretti, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen , A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrı, N. Madsen, G. Manuzio, P. Montagna, D. Mitchard , A. Rotondi, G. Testera, A. Variola, L. Venturelli, Y. Yamazaki, D. P. van der Werf and N. Zurlo
in Proceedings of the International Nuclear Physics Conferences (INPC 2004); Nucl. Phys. A 752 (2005) 97 (pdf)
The ALPHA Experiment: A Cold Antihydrogen Trap
W. Bertsche, A. Boston, P. D. Bowe, C. L. Cesar, S. Chapman, M. Charlton, M. Chartier, A. Deutsch, J. Fajans, M.C. Fujiwara, R. Funakoshi, D. Gill, K.Gomberoff, D. Grote , J. S. Hangst, R. S. Hayano, M. Jenkins, L. V. Jørgensen, N. Madsen, D. Miranda, P. Nolan, K. Ochanski, A.Olin, R.D. Page, L.G.C. Posada, F. Robicheaux, E. Sarid, H.H. Telle, J.-L. Vay, J. Wurtele, D. P. van der Werf and Y. Yamazaki
in Low Energy Antiproton Physics, edited by D. Grzonka, R. Czyzykiewicz, W. Oelert, T. Rozek and P. Winter (American Institute of Physics, New York, 2002), Vol. AIP 796 (2005) 301 (pdf)
Proposal to the CERN SPSC for AD Physics Starting in 2006
The ALPHA Collaboration (Antihydrogen Laser PHysics Apparatus)
University of Aarhus: P.D. Bowe, N. Madsen, J.S. Hangst
University of Calgary: R.I. Thompson
University of California, Berkeley: W. Bertsche, E. Sarid†, J. Fajans
University of Liverpool: A. Boston, P. Nolan, R.D. Page, M. Chartier
University of Manitoba: G. Gwinner
RIKEN: Y. Yamazaki
Federal University of Rio de Janeiro: D. Miranda, C. Cesar
University of Tokyo: R. Funakoshi, L.G.C. Posada, R. Hayano
TRIUMF: J. Dilling, K. Ochanski, M.C. Fujiwara
University of Wales, Swansea: M. Jenkins, L.V. Jørgensen, D.R.J.Mitchard, H.H. Telle, A. Variola*, D.P. van der Werf, M. Charlton
SPSC-P-325 (2005) (pdf)
The muon spin response to intermittent hyperfine interaction: modelling the high-temperature electrical activity of hydrogen in silicon
J. S. Lord, S. F. J. Cox, M. Charlton, D. P. van der Werf, R. L. Lichti and A. Amato
J. Phys.: Condens. Matter 16 (2004) S4739 (pdf)
Dynamics of antiproton cooling in a positron plasma during antihydrogen formation
M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. D. Bowe, C. Carraro, C.L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf and Y. Yamazaki
Physics Letters B 590 (2004) 133 (pdf)
Antihydrogen production temperature dependence ATHENA Collaboration
M. Amoretti, C. Amsler, G. Bazzano, G. Bonomi, A. Bouchta, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, I. Johnson, L.V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, M. Marchesotti, D. Mitchard, F. Ottone, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Testera, A. Variola,
L. Venturelli, Y. Yamazaki, D. P. van der Werf and N. Zurlo
Phys. Lett. B 583 (2004) 59 (pdf)
Three-Dimensional Annihilation Imaging of Trapped Antiprotons
M. C. Fujiwara, M. Amoretti, G. Bonomi, A. Bouchta, P. D. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L.V. Jørgensen, V. Lagomarsino, R. Landua, E. Lodi-Rizzini, M. Marchesotti, M. Macrí, N. Madsen, G. Manuzio,
P. Montagna, P. Riedler, A. Rotondi, G. Rouleau, G. Testera, A. Variola, D. P. van der Werf and Y. Yamazaki
Phys. Rev. Lett 92 (2004) 065005 (pdf)
The ATHENA antihydrogen apparatus
M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P.D. Bowe, C. Carraro, M. Charlton, M.J.T. Collier, M. Doser, V. Filippini, K.S. Fine, A. Fontana, M.C. Fujiwara, R. Funakoshi, P. Genova, A. Glauser, D. Grögler, J. Hangst, R.S. Hayano, H. Higaki, M.H. Holzscheiter, W. Joffrain, L.V. Jørgensen, V. Lagomarsino, R. Landua, C. Lenz Cesar, D. Lindelöf, E. Lodi-Rizzini, M. Macrí, N. Madsen, D. Manuzio, G. Manuzio, M. Marchesotti,
P. Montagna, H. Pruys, C. Regenfus, P. Riedler, J. Rochet, A. Rotondi, G. Rouleau, G. Testera, D. P. van der Werf, A. Variola, T.L. Watson, T. Yamazaki and Y. Yamazaki
Nucl. Instr. and Meth. in Phys. Res. A 518 (2004) 679 (pdf)
High rate production of antihydrogen ATHENA Collaboration
M. Amoretti, C. Amsler, G. Bazzano, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C.L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf , E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, M. Marchesotti, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Rouleau, G. Testera, A. Variola and
D. P. van der Werf
Phys. Lett. B 578 (2004) 23 (pdf)
Antihydrogen Formation using Cold Plasmas
N. Madsen, M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. D. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, I. Johnson, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi-Rizzini, M. Macrí, G. Manuzio, D. Mitchard, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D. P. van der Werf
in Atomic Processes In Plasmas: 14th APS Topical Conference on Atomic Processes in Plasmas, eds. by J. S. Cohen, D. P. Kilcrease, and S. Mazevet, (American Institute of Physics, New York, USA, 2004), AIP Conf. Proc. 730 (2004) 13 (pdf)
Detection of Antihydrogen Annihilations with Si-Micro-Strip and pure CsI Detector
I. Johnson, M. Amoretti, C. Amsler, G. Bazzano, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, D. Lindelöf, Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, M. Marchesotti, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Rouleau, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf and N. Zurlo
in Proceedings of the 8th ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications, eds. M. Barone, E. Borchi, C. Leroy, P.-G. Rancoita, P.-L. Riboni and R. Ruchti (World Scientific, Singapore) (2004) 473
Cold-Antimatter Physics
M. Amoretti, C. Amsler, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. L. Cesar , M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, I. Johnson, L. V. Jørgensen, A. Kellerbauer, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, D. Mitchard, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf, Y. Yamazaki and N. Zurlo
XLIII International Meeting on Nuclear Physics, Bormio (Italy), March 13-20 (2005).
First production and detection of cold antihydrogen atoms
M. C. Fujiwara, M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C.L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini, M. Marchesotti, M. Macrí, N. Madsen, P. Montagna, H. Pruys, C. Regenfus, P. Rielder, A. Rotondi, G. Testera, A. Variola, D. P. van der Werf
Nucl. Instr. and Meth. in Phys. Res. B 214 (2004) 11 (pdf)
Temperature dependence of anti-hydrogen production in the ATHENA experiment
G. Bonomi, M. Amoretti, C. Amsler, A. Bouchta, P. Bowe, C. Carraro, C.L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst,
R.S. Hayano, L.V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini,k, M. Macrí, N. Madsen, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Testera, A. Variola, D. P. van der Werf
Nucl. Instr. and Meth. in Phys. Res. B 214 (2004) 17 (pdf)
Production and detection of cold antihydrogen atoms
M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. D. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D. P. van der Werf
Nucl. Instr. and Meth. in Phys. Res. A 518 (2004) 244 (pdf)
Real-time detector for plasma diagnostic in antimatter experiment
C. Carraro, M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. D. Bowe, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, C. Lenz Cesar, D. Lindelöf, E. Lodi-Rizzini, M. Macrí, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D. P. van der Werf
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment 518 (2000) 249
The first cold antihydrogen
M.C. Fujiwara, M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P.D. Bowe, C. Carraro, C.L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, R. Funakoshi, P. Genova, J.S. Hangst, R.S. Hayano, L.V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini,
M. Macrí, N. Madsen, M. Marchesotti, P. Montagna,k, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Testera, A. Variola,
D.P. van der Werf and Y. Yamazaki
Nucl. Instr. and Meth. in Phys. Res. A 532 (2004) 229 (pdf)
Athena – First Production of Cold Antihydrogen and Beyond
A. Kellerbauer, M. Amoretti, C. Amsler, G. Bonomi, P. D. Bowe, C. Canali, C. Carraro, C. C. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, I. Johnson, L. V. Jørgensen, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, D. Mitchard5, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola, L. Venturelli, D. P. van der Werf, Y. Yamazaki and N. Zurlo
Proceedings of 3rd Meeting on CPT and Lorentz Symmetry (CPT 04), Bloomington, Indiana, 4-7 Aug 2004
Anti-hydrogen: Production and Experiments
C. L. Cesar, A. Fontana, M. Amoretti, G. Bazzano, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, M. Charlton, M. Doser, V. Filippini, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D. P. van der Werf
To appear in the proceedings to the ICAP-2004
Production and Detection of Cold Anti-Hydrogen Atoms. A First Step Towards High Precision CPT Tests
A. Variola, M. Amoretti, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini, M. Macrí, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Testera and D. P. van der Werf
in Intersections of Particle and Nuclear Physics: 8th Conference, edited by Z. Parsa (American Institute of Physics, New York, USA, 2004), AIP Conf. Proc. vol. 698 (2004) 205 (pdf)br />
Evidence for positronium formation at incommensurate monolayers of argon on graphite
R. S. Morton, D. P. van der Werf and P. Rice-Evans
J. Phys.: Condens. Matter 15 (2003) L771 (pdf)
Complete Nondestructive Diagnostic of Nonneutral Plasmas Based on the Detection of Electrostatic Modes
M. Amoretti, G. Bonomi, A. Bouchta, P. D. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrì, N. Madsen, G. Manuzio, G. Testera, A. Variola and D. P. van der Werf
Phys. Plasma 10 (2003) 3056 (pdf)
Positron Plasma diagnostics and Temperature Control in Antihydrogen Production
M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, M. H. Holzscheiter, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E.Lodi Rizzini, M. Macrì, N. Madsen, G. Manuzio, M. Marchesotti, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D. P. van der Werf
Physical Review Letters 91 (2003) 055001 (pdf)
Development and Application of Time-Bunched and Velocity Selected Positron Beams
J. P. Merrison, M. Charlton, P. Aggerholm, H. Knudsen, D. P. van der Werf and J. Clarke
Review of Scientific Instruments 74 (2003) 3284 (pdf)
Cold Antihydrogen at ATHENA: Experimental Observation and Beyond
A. Fontana, M. Amoretti, G. Bazzano, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macri, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D. P. van der Werf
Acta Physica Polonica B 34 (2003) 5433 (pdf)
The electrical activity of hydrogen and muonium in silicon at high temperatures
S. F. J. Cox, N. Gidopoulos, J. S. Lord, M. Charlton, D. P. Van der Werf, A. Amato and R.L. Lichti
Physica B 340–342 (2003) 641 (pdf)
Developments in the trapping and accumulation of slow positrons using the buffer gas technique
J. Clarke, D. P. van der Werf , M. Charlton, D. Beddows, B. Griffiths and H. H. Telle
in Nonneutral Plasma Physics V, edited by M. Schauer, T. Mitchell and R. Nebel (American Institute of Physics, New York, USA, 2003), AIP Conf. Proc. vol. 692 (2003) 178
Three-Dimensional Annihilation Imaging of Antiprotons in a Penning Trap
M. C. Fujiwara, M. Amoretti, G. Bonomi, A. Bouchta, P. D. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini, M. Macrì, N. Madsen, M. Marchesotti, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Testera, A. Variola, D. P. van der Werf
in Nonneutral Plasma Physics V, edited by M. Schauer, T. Mitchell and R. Nebel (American Institute of Physics, New York, USA, 2003), AIP Conf. Proc. vol. 692 (2003) 131 (pdf)
Non-Destructive Positron Plasma Diagnostics for Antihydrogen Production
M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. D. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini, M. Macrì, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera, A. Variola and D. P. van der Werf
in Nonneutral Plasma Physics V, edited by M. Schauer, T. Mitchell and R. Nebel (American Institute of Physics, New York, USA, 2003), AIP Conf. Proc. vol. 692 (2003) 121 (pdf)
Transfer, Stacking, and Compression of Positron Plasmas under UHV Conditions
D. P. van der Werf, M. Amoretti, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Doser, V. Filippini, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, L. V. Jørgensen, V. Lagomarsino, R. Landua, E. Lodi Rizzini, M. Macrì, N. Madsen, G. Manuzio, P. Montagna, H. Pruys, C. Regenfus, A. Rotondi, G. Testera and A. Variola
in Nonneutral Plasma Physics V, edited by M. Schauer, T. Mitchell and R. Nebel (American Institute of Physics, New York, USA, 2003), AIP Conf. Proc. vol. 692 (2003) 172 (pdf)
Positron annihilation study of the diffusion of oxygen in annealed silicon-doped gallium arsenide
A. C. Towner, M. Nathwani, A. S. Saleh, D. P. van der Werf, P. Rice-Evans
Philosophical Magazine B 82 (2002) 1809
Production and detection of cold antihydrogen atoms
M. Amoretti, C. Amsler, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. J. T. Collier, M. Doser, V. Filippini, K. S. Fine, A. Fontana, M. C. Fujiwara, R. Funakoshi, P. Genova, J. S. Hangst, R. S. Hayano, M. H. Holzscheiter, L. V. Jørgensen, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi Rizzini, M. Macrì, N. Madsen, G. Manuzio, M. Marchesotti, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, J. Rochet, A. Rotondi, G. Rouleau, G. Testera, A. Variola, T. L. Watson and D. P. van der Werf
Nature 419 (2002) 456 (pdf)
Three-body effects in the annihilation of positrons on molecules
M. Charlton, D. P. van der Werf and I. Al-Qaradawi
Phys. Rev. A 65 (2002) 042716 (pdf)
The ATHENA positron accumulator
D.P. van der Werf, L.V. Jørgensen, T.L. Watson, M. Charlton, M.J.T. Collier, M. Doser, R. Funakoshi
Appl. Surf. Sci. 194 (2002) 312 (pdf)
Recent Progress on the ATHENA Positron Accumulator
L. V. Jørgensen, D. P. van der Werf, T. L. Watson, M. Charlton and M. J. T. Collier
in Nonneutral Plasma Physics IV, edited by F. Anderegg, L. Schweikhard and C. F. Driscoll (American Institute of Physics, New York, 2002), Vol. AIP 606 (2002) 35
Producing Slow Antihydrogen for a Test of CPT Symmetry with ATHENA
M. C. Fujiwara, M. Amoretti, C. Amsler, G. Bendiscioli, G. Bonomi, A. Bouchta, P. Bowe, C. Carraro, M. Charlton, M. Collier, M. Doser, V. Filippini, K. Fine, A. Fontana, R. Funakoshi, P. Genova, D. Grögler, J. S. Hangst, R. S. Hayano, H. Higaki, M. H. Holzscheiter, L. V. Jørgensen, D. Kleppner, V. Lagomarsino, R. Landua, C. Lenz Cesar, D. Lindelöf, E. Lodi-Rizzini, M. Macrì, G. Manuzio, M. Marchesotti, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Rouleau, P. Salvini, G. Testera, D. P. van der Werf, A. Variola, T. Watson, T. Yamazaki and Y. Yamazaki
Proceeding of muCF01 Hyperfine Interactions 138 (2001) 153 (pdf)
A Positron Accumulator for Antihydrogen Synthesis
L. V. Jørgensen, M. J. T. Collier, K. S. Fine, T. L. Watson, D. P. van der Werf and M. Charlton
Material Science Forum 363-365 (2001) 634 (pdf)
Antihydrogen Production and Precision Spectroscopy with ATHENA/AD-1
C. Amsler, G. Bendiscioli, G. Bonomi, P. Bowe, C. Carraro, C. L. Cesar, M. Charlton, M. Collier, M. Doser, K. Fine, A. Fontana, M. C. Fujiwara, R. Funakoshi, J. Hangst, R. S. Hayano, H. Higaki, M. H. Holzscheiter, L. V. Jørgensen, D. Kleppner, V. Lagomarsino, R. Landua, D. Lindelöf, E. Lodi-Rizzini, M. Macrì, G. Manuzio, M. Marchesotti, P. Montagna, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Rouleau, G. Testera, T. Watson, D. P. van der Werf, T. Yamazaki and Y. Yamazaki
in The Hydrogen Atom: Precision Physics of Simple Atomic Systems; eds. S. G. Karshenboim, F. S. Pavone, G. F. Bassani, M. Inguscio, T.W. Haensch; Springer 2001 Lecture notes in Physics; 570 page 469 – 488
Phase transitions in monolayer hydrogen and deuterium on graphite
R. S. Morton, D. P. van der Werf, and P. C. Rice-Evans
Phys. Rev. B 62 (2000) 17031 (pdf)
Antihydrogen Production and Precision Spectroscopy with ATHENA/AD-1
ATHENA Collaboration
Hydrogen II Workshop, Castiglione de Pescaia (2000)
The ATHENA antihydrogen experiment
K. S. Fine, C. Amsler, G. Bollen, A. Cantone, C. B. Carlberg, C. L. Cesar, M. Charlton, M. J. T. Collier, M. Doser, J. Eades, N. A. Eklöw, R. Fedele, A. Fontana, T. Fritioff, G. Gemme, G. Gorini, J. S. Hangst, R. Hayano, E. Hermes, M. H. Holzscheiter, L. V. Jørgensen, D. Kleppner, V. Lagomarsino, R. Landua, R. A. Lewis, E. Lodi-Rizzini, M. Macrì, G. Manuzio, M. Marchesotti, J. P. Merrison, H. Pruys, C. Regenfus, P. Riedler, A. Rotondi, G. Rouleau, P. Salvini, R. H. Schuch, G. A. Smith, G. Testera, G. Torelli, E. Uggerhøj, D. P. van der Werf, L. Venturelli, T. Yamazaki, Y. Yamazaki, D. Zanello and M. Zwahlen
in Non Neutral Plasma Physics III, edited by J. J. Bollinger, R. L. Spencer and R. C. Davidson (American Institute of Physics, New York, 1999), Vol. AIP 498 (1999) 40 (pdf)
Development and Testing of a Positron Accumulator for Antihydrogen Production
M. J. T. Collier, L. V. Jørgensen, O. I. Meshkov, D. P. van der Werf and M. Charlton
in Non Neutral Plasma Physics III, edited by J. J. Bollinger, R. L. Spencer and R. C. Davidson (American Institute of Physics, New York, 1999), Vol. AIP 498 (1999) 13
Electric-field-gradient calculations on cadmium-helium vacancy clusters in tungsten
D. P. van der Werf, H. van Leuken and R. A. de Groot
Physical Review B 52 (1995) 3909 (pdf)
Helium-vacancy interaction in tungsten
M. S. Abd El Keriem, D. P. van der Werf and F. Pleiter
Phys. Rev. B 47 (1993) 14771 (pdf)
Hydrogen-vacancy interaction in molybdenum
M S Abd El Keriem, D P van der Werf and F Pleiter
J. Phys: Condens. Matter 5 (1993) 1801 (pdf)
Atomic-structure-dependent Schottky barrier at epitaxial Pb/Si(111) interfaces
D. R. Heslinga, H. H. Weitering, D. P. van der Werf, T. M. Klapwijk and T. Hibma
Physical Review Letters 13 (1990) 1589 (pdf)
Positronium formation at a graphite surface in the presence of physisorbed krypton
R. Morton, D. P. van der Werf and P. C. Rice-Evans
Material Science Forum 255-257 (1997) 381 (pdf)
Positronium production at condensed layers of hydrogen and deuterium on graphite
P. C. Rice-Evans, R. Morton and D. P. van der Werf
Material Science Forum 255-257 (1997) 378 (pdf)
Defect profiling with low energy positrons of nitrogen implanted silicon
D. P. van der Werf, A. S. Saleh, A. Towner, M. Nathwani, J. Taylor, P. C. Rice-Evans and S. J. Bull
Material Science Forum 255-257 (1997) 500 (pdf)
Positron studies of plasma-treated silicon wafers
D. P. van der Werf, M. Nathwani, A. Towner, J. W. Taylor, R. Morton,
A. P. Knights, P. C. Rice-Evans, A. Szekeres
Appl. Surf. Sci. 116 (1997) 228 (pdf)
The influence of a PAC probe on defects properties
D. P. van der Werf and F. Pleiter
Hyperfine Interactions C1 (1996) 388
Trap mutation in He-doped ion-implanted tungsten
M. S. Abd El Keriem, D. P. van der Werf and F. Pleiter
Hyperfine Interactions 79 (1993) 787 (pdf)
Hydrogen-vacancy interaction in W and Mo
M. S. Abd El Keriem, D. P. van der Werf and F. Pleiter
Hyperfine Interactions 79 (1993) 783 (pdf)
Helium assisted trap mutation in tungsten observed by means of PAC
M. S. Abd El Keriem, D. P. van der Werf and F. Pleiter
Proc. XXVI Zakopane School on Physics, ed. J. Stanek and S. T. Pedziwiatr, (World Scientific Publishing, Singapore) (1991) 357 (pdf)
Thesis: Helium in Tungsten: A calculational approach
D. P. van der Werf
PhD. thesis,
Groningen (1994)
Natcom: Natuurkunde en PC-Calc.
H. Habing, H, Jordens (ed.), H. Luensink, H. Seinen and D. P. van der Werf
Nivo project, Ministerie van Onderwijs en Wetenschappen (Department of education and sciences) (1988)
(Project: How to use computers in physics education at High School)
Status of the GBAR experiment, Stockholm (using zoom), May 2020
Progress in the GBAR experiment, UK positron meeting, Dundee, December 2019
The GBAR experiment, UK positron meeting, Belfast, December 2018
Observation of the 1S-2S Transition in Antihydrogen, CEA-Saclay, March 2017
Observation of the 1S-2S Transition in Antihydrogen, Seoul National University, Seoul, February 2017
Physics with Antiprotons and Antihydrogen, Colloquim at University of Southamptom, November 2016
The ALPHA Experiment, Seoul National University, Seoul, October 2016
Antihydrogen, St. Brendan's Sixth Form College, Bristol, April 2016
The GBAR experiment: Status and outlook, invited talk LEAP2016, Kanazawa, March 2016
Measurements on Antihydrogen, Invited talk ICPA2015, Wuhan, September 2015
Physics with Antiparticles and Antihydrogen, Fudan University, Shanghai, September 2015
The ALPHA Experiment, EXA2014, Vienna, September 2014
Pushing the Limits of Positron Densities for the Production of Antihydrogen and its Ion, FLAIR2014, Heidelberg, May 2014
The GBAR experiment, WAG2013, BERN, November 2013
Manipulation of Positrons in the Single Particle and Rarefied Plasma Regime, invited talk POSMOL2013, Kanazawa, July 2013
The ALPHA Experiment, RIKEN, Tokyo, July 2013
Resonant Quantum Transitions in Trapped Antihydrogen, invited talk EuNPC2012, Bucharest, September 2012
Physics with Antiparticles and Antihydrogen, invited talk WAMP7, Jurata, September 2012
Resonant Quantum Transitions in Trapped Antihydrogen, invited talk SSP2012, Groningen, June 2012
Resonant Quantum Transitions in Trapped Antihydrogen, University of Sussex, May 2012
Compression of positron clouds using rotating wall electric fields, invited talk LEAP 2011, Vancouver
Positron Accumulation for Antihydrogen, (part of minicourse), Rio de Janeiro, March 2011
Trapped Antihydrogen, Colloquim, Washington State University, Pullman, February 2011
Trapped Anthydrogen, Port Talbot Astronomical Society, Port Talbot, February 2011
Positron beams in Swansea, Australian National University, Canberra, August 2010
Antimatter transport processes, invited talk SPIG 2010, Donji Milanovac, Serbia
Antimatter, Colloquim, University of Sussex 2010
Magnetized Positronium, invited talk POSMOL2009, Toronto
Antimatter, IOP talk, University of Nottingham 2009
Antimatter, IOP talk, University of East Anglia 2009
Antihydrogen, University of the third Age, Monmouth 2008
Antimatter research, F(L)AIR UK-FAIR meeting 2006, Daresbury
Laser-induced muonium excitation in silicon, invited talk µSR2005 Satellite Meeting: Pulsed Muon Techniques, Oxford, August 2005
How to trap antihydrogen, UK positron meeting June 2005
Positron manipulation for use in antihydrogen formation, invited talk MSI, KEK, Japan, March 2005
Perspectives on the Production of Cold Antihydrogen, invited plenary talk at 35th Polish Seminar on Positron Annihilation, Turawa, Poland
Cold Antihydrogen a Progress Report, UK positron meeting September 2004
Cold Antihydrogen, Colloquim, University of Halle, Germany, July 2004
Antihydrogen, University of the third Age, Swansea, April 2004
The Creation of Cold Antihydrogen,Hong Kong University, September 2003
Cold Antihydrogen, invited Plenary Talk at ICPA-13 in Kyoto Japan, September 2003
The Creation of Cold Antihydrogen, UK positron meeting, UCL, June 2003
Cold Antihydrogen, UCL, October 2002
Cold Antihydrogen, NIKHEF Amsterdam, The Netherlands, October 2002
How to Make Antihydrogen? Delft, The Netherlands, January 2002
How to make Antihydrogen? KVI Groningen, The Netherlands, January 2002
How to Make Antihydrogen? Royal Holloway, Egham, 2001
How to Make Antihydrogen? University of Bath, Bath, November 2001
The Athena Positron Accumulator, Seventh international workshop on Slow-Positron techniques for Solids and Surfaces, Dresden, Germany, September 2001
Molecular Dynamics calculations for Helium in Tungsten, College of William and Mary, Williamstown, USA, May 1997
Defect Profiling with Low Energy Positrons of Nitrogen Implanted Silicon, Eleventh International Conference on Positron Annihilation, Kansas City, USA May 1997
Positron studies of Plasma-treated silicon wafrs, Seventh international workshop on Slow-Positron techniques for Solids and Surfaces, Unterägeri, Switzerland, June 1996
Helium Assisted Trap Mutation in Tungsten Observed by means of PAC, Twenty sixth Zakopane Schoool on Physics, Poland, April 1991
EPSRC:Precision Experiments with Antihydrogen
Award: £3,512,406
PI: M. Charlton, CI: D P van der Werf, S.J. Eriksson, N. Madsen, C.A. Isaac
Dates: 01 February 2021 – 31 Januray 2025
CERN: Scientific Associate
Dates: 01 October 2017 - 31 September 2018
EPSRC:Towards Precision Experiments with Antihydrogen
Award: £2,826,637
PI: M. Charlton, CI: D P van der Werf, S.J. Eriksson, N. Madsen, C.A. Isaac
Dates: 01 March 2017 – 28 February 2021
CEA: Production of the Negative Hydrogen Ion by using Protons and Positronium, as preparation for Antihydrogen Plus production - Enhanced Eurotalents Fellowship
Award: Two years salary and about €200,000 to build a positron buffer gas accumulator
PI: D P van der Werf
Dates: 01 August 2015 - 31 July 2017
EPSRC: Physics with Trapped Antihydrogen
Award: £749,608
PI: M. Charlton
CI: D P van der Werf, S.J. Eriksson
Dates: 01 February 2014 - 31 January 2017
Leverhulme: Probing the Rydberg levels of Positronium - Research Fellowship
Award: £41,138
PI: D P van der Werf
Dates: 01 October 2012 - 31 September 2014
EPSRC: The Spectroscopy of Antihydrogen
Award: £2,363,716
PI: M. Charlton
CI: D P van der Werf, M. Madsen, S.J. Eriksson, H. H. Telle
Dates: 01 April 2010 - 31 March 2014
EPSRC: Simulations of Antihydrogen Formation
Award: £9,840
PI: S. Jonsell
CI: D P van der Werf
01 January 2009 - 31 December 2009
EPSRC: Trapped Antihydrogen - Towards Spectroscopy
Award: £ 787,315
PI: M. Charlton
CI: H. H. Telle
Recognised researcher: D. P. van der Werf and L. V. Jorgensen
Dates: 01 February 2006 - 01 February 2010
RCUK Fellow
Award: £125,000
PI: D P van der Werf
Dates: 01 October 2005 – 01 October 2010
Winner of the John Dawson Award for Excellence in Plasma Physics Research 2011 together with 10 other people form the ALPHA collaboration
Co-organiser of the Symposium on Antimatter and its Applications, 2015, Swansea
Co-organiser of the 3rd International Workshop on Antimatter and Gravity (WAG2015), London
Organised the physics contribution to the Eisteddfod at Eryri, near Carnearfon in 2012 and was awarded £1,800 under the “PATHWAYS TO IMPACT AWARD (PIA)” scheme from the EPSRC, administered by Swansea University.
Organised the physics contribution to the Eisteddfod at Swansea in 2011 and was awarded £3,098.40 under the “PATHWAYS TO IMPACT AWARD (PIA)” scheme from the EPSRC, administered by Swansea University.
Organised the 2010 UK positron meeting in Swansea
Co-organiser POSMOL07 Reading 2007
PH-333 Atomic Physics and Quantum Optics II 20/21, 21/22 PH-307 Solid State Physics II 10/11, 11/12 PH-339 Climate Physics 09/10, 10/11, 11/12, 21/22, 22/23 PH-209, PH-210, PH-211 2nd year lab 06/07, 14/15, 22/23 PH-129 1st year lab 07/08, 08/09, 09/10, 10/11, 11/12, 17/18 PH-208 Electronics 00/01, 01/02, 02/03, 06/07 PH-M12 Option Experiment γ-spectroscopy 13/14, 14/15 PH-M03 Topics in Modern Phyiscs - μSR 05/06, 06/07 Head of Level 3 09/10, 10/11, 11/12
PhD
| Aled Isaac | Axialisation of Particles in a Penning-type Trap by the Application of a Rotating Dipole Electric Field and its Application to Positron Accumulation | 2010 | (pdf) | ||||
| Serena Kerrigan | An Experimental Study of Positron Moderation and Accumulation and the Laser Ionisation of Positronium | 2011 | (pdf) | ||||
| Tim Mortensen | Manipulation of the magnetron orbits of particles and clouds in a two-stage buffer gas accumulator | 2013 | (pdf) | ||||
| Adam Deller | Positron accumulation and laser excitation of the positronium atom | 2013 | (pdf) | ||||
| Amélia Mafalda Maia Leite | Development of a buffer gas trap for the confinement of positrons and study of positronium production in the GBAR experiment | 2017 | (pdf) | ||||
| Liam Dodd | Development of a proton beamline for measurements of the cross section of proton-positronium interactions for the production of H− | 2019 | (pdf) | ||||
| Samuel Niang | Optimisation of positron accumulation in the GBAR experiment and study of space propulsion based on antimatter | 2020 | (pdf) |
MSc
| Georgia Booton | Systematic Studies of Positron Accumulation and Transfer | 2023 | (pdf) |
