CERN Accelerating science

Published Articles
Title Enhanced Control and Reproducibility of Non-Neutral Plasmas
Author(s) Ahmadi, M (Liverpool U.) ; Alves, B  X  R (Aarhus U.) ; Baker, C  J (Swansea U.) ; Bertsche, W (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Capra, A (TRIUMF) ; Carruth, C (UC, Berkeley) ; Cesar, C  L (Rio de Janeiro Federal U.) ; Charlton, M (Swansea U.) ; Cohen, S (Ben Gurion U. of Negev) ; Collister, R (TRIUMF) ; Eriksson, S (Swansea U.) ; Evans, A (Calgary U.) ; Evetts, N (British Columbia U.) ; Fajans, J (UC, Berkeley) ; Friesen, T (Aarhus U.) ; Fujiwara, M  C (TRIUMF) ; Gill, D  R (TRIUMF) ; Hangst, J  S (Aarhus U.) ; Hardy, W  N (British Columbia U.) ; Hayden, M  E (Simon Fraser U.) ; Isaac, C  A (Swansea U.) ; Johnson, M  A (Manchester U.) ; Jones, S  A (Aarhus U. ; Swansea U.) ; Jonsell, S (Stockholm U.) ; Kurchaninov, L (TRIUMF) ; Madsen, N (Swansea U.) ; Mathers, M (York U., Canada) ; Maxwell, D (Swansea U.) ; McKenna, J  T  K (TRIUMF) ; Menary, S (York U., Canada) ; Momose, T (British Columbia U., Chem. Dept.) ; Munich, J  J (Simon Fraser U.) ; Olchanski, K (TRIUMF) ; Olin, A (TRIUMF ; Victoria U.) ; Pusa, P (Liverpool U.) ; Rasmussen, C  Ø (Aarhus U.) ; Robicheaux, F (Purdue U.) ; Sacramento, R  L (Rio de Janeiro Federal U.) ; Sameed, M (Swansea U. ; Manchester U.) ; Sarid, E (Soreq Nucl. Res. Ctr.) ; Silveira, D  M (Rio de Janeiro Federal U.) ; So, C (TRIUMF ; Calgary U.) ; Stutter, G (Aarhus U.) ; Tharp, T  D (Marquette U.) ; Thompson, J  E (York U., Canada) ; Thompson, R  I (TRIUMF ; Calgary U.) ; van der Werf, D  P (Swansea U. ; IRFU, Saclay) ; Wurtele, J  S (UC, Berkeley)
Collaboration ALPHA
Publication 2018
Number of pages 6
In: Phys. Rev. Lett. 120 (2018) 025001
DOI 10.1103/PhysRevLett.120.025001
Subject category Accelerators and Storage Rings
Accelerator/Facility, Experiment CERN ALPHA
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.
Copyright/License Publication: © 2018-2025 American Physical Society

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 记录创建於2018-11-02,最後更新在2022-06-30