Enhanced Control and Reproducibility of Non-Neutral Plasmas

Authors

Timothy Tharp, Marquette UniversityFollow
M. Ahmadi, University of LiverpoolFollow
B. X. R. Alves, Aarhus UniversityFollow
C. J. Baker, Swansea UniversityFollow
W. Bertsche, University of Manchester, Cockcroft InstituteFollow
A. Capra, TRIUMF
C. Carruth, University of California - Berkeley
C. L. Cesar, Universidade Federal do Rio de JaneiroFollow
M. Charlton, Swansea UniversityFollow
S. Cohen, Ben-Gurion University of the Negev
R. Collister, TRIUMFFollow
S. Eriksson, Swansea UniversityFollow
A. Evans, University of Calgary
N. Evetts, University of British ColumbiaFollow
J. Fajans, University of California - Berkeley
T. Friesen, Aarhus UniversityFollow
M. C. Fujiwara, TRIUMFFollow
D. R. Gill, TRIUMFFollow
J. S. Hangst, Aarhus UniversityFollow
W. N. Hardy, University of British ColumbiaFollow
M. E. Hayden, Simon Fraser UniversityFollow
C. A. Isaac, Swansea UniversityFollow
M. A. Johnson, University of ManchesterFollow
S. A. Jones, Aarhus University, Swansea UniversityFollow
S. Jonsell, Stockholm University
L. Kurchaninov, TRIUMF
N. Madsen, Swansea University
M. Mathers, York University
D. Maxwell, Swansea University
J. T. K. McKenna, TRIUMFFollow
S. Menary, York University
T. Momose, University of British ColumbiaFollow
J. J. Munich, Simon Fraser UniversityFollow
K. Olchanski, TRIUMF
A. Olin, TRIUMF, University of VictoriaFollow
P. Pusa, University of Liverpool
C. O. Rasmussen, Aarhus UniversityFollow
F. Robicheaux, Purdue University
R. L. Sacramento, Universidade Federal do Rio de JaneiroFollow
M. Sameed, Swansea University, University of ManchesterFollow
E. Sarid, Soreq NRCFollow
D. M. Silveira, Universidade Federal do Rio de JaneiroFollow
C. So, TRIUMF, University of Calgary
G. Stutter, Aarhus University
J. E. Thompson, York University
R. I. Thompson, TRIUMF, University of CalgaryFollow
D. P. van der Werf, Swansea University, IRFUFollow
J. S. Wurtele, University of California - BerkeleyFollow

Document Type

Article

Language

eng

Publication Date

1-2018

Publisher

American Physical Society

Source Publication

Physical Review Letters

Source ISSN

0031-9007

Abstract

The simultaneous control of the density and particle number of non-neutral plasmas confined in Penning-Malmberg traps is demonstrated. Control is achieved by setting the plasma’s density by applying a rotating electric field while simultaneously fixing its axial potential via evaporative cooling. This novel method is particularly useful for stabilizing positron plasmas, as the procedures used to collect positrons from radioactive sources typically yield plasmas with variable densities and particle numbers; it also simplifies optimization studies that require plasma parameter scans. The reproducibility achieved by applying this technique to the positron and electron plasmas used by the ALPHA antihydrogen experiment at CERN, combined with other developments, contributed to a 10-fold increase in the antiatom trapping rate.

Comments

Published version. Physical Review Letters, Vol. 120, No. 2 (2018). DOI. © 2018 American Physical Society. Used with permission.

Recommended Citation

Tharp, Timothy; Ahmadi, M.; Alves, B. X. R.; Baker, C. J.; Bertsche, W.; Capra, A.; Carruth, C.; Cesar, C. L.; Charlton, M.; Cohen, S.; Collister, R.; Eriksson, S.; Evans, A.; Evetts, N.; Fajans, J.; Friesen, T.; Fujiwara, M. C.; Gill, D. R.; Hangst, J. S.; Hardy, W. N.; Hayden, M. E.; Isaac, C. A.; Johnson, M. A.; Jones, S. A.; Jonsell, S.; Kurchaninov, L.; Madsen, N.; Mathers, M.; Maxwell, D.; McKenna, J. T. K.; Menary, S.; Momose, T.; Munich, J. J.; Olchanski, K.; Olin, A.; Pusa, P.; Rasmussen, C. O.; Robicheaux, F.; Sacramento, R. L.; Sameed, M.; Sarid, E.; Silveira, D. M.; So, C.; Stutter, G.; Thompson, J. E.; Thompson, R. I.; van der Werf, D. P.; and Wurtele, J. S., "Enhanced Control and Reproducibility of Non-Neutral Plasmas" (2018). Physics Faculty Research and Publications. 147.
https://epublications.marquette.edu/physics_fac/147