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Evaporative cooling of antiprotons for the production of ...
Jeffrey S. Hangst
Evaporative cooling of antiprotons for the production of trappable antihydrogen
Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review
- D.M. Silveira, Universidade Federal do Rio de Janeiro ,
- G.B. Andresen
- M.D. Ashkezari, Simon Fraser University ,
- M. Baquero-Ruiz, University of California ,
- W. Bertsche, University of Manchester ,
- P.D. Bowe, Danmark
- E. Butler, PH Department ,
- C.L. Cesar, Universidade Federal do Rio de Janeiro ,
- S. Chapman, University of California ,
- M. Charlton, Swansea University ,
- J. Fajans, University of California ,
- T. Friesen, University of Calgary, Danmark
- Masatoshi Fujiwara, Asia Research Centre, Danmark
- D.R. Gill, 4004 Wesbrook Mall ,
- J.S. Hangst
- W.N. Hardy, University of British Columbia ,
- M.E. Hayden, Simon Fraser University ,
- R. Hydomako, University of Calgary ,
- S. Jonsell, Stockholm University ,
- L. Kurchaninov, 4004 Wesbrook Mall ,
- N. Madsen, Swansea University, Danmark
- S. Menary, York University ,
- P. Nolan, University of Liverpool ,
- K. Olchanski, 4004 Wesbrook Mall ,
- A. Olin, TRIUMF, Canada
- A. Povilus, University of California ,
- P. Pusa, University of Liverpool ,
- F. Robicheaux, Auburn University ,
- E. Sarid, NRCN-Nuclear Research Center Negev ,
- C. So, University of California ,
- J.W. Storey, 4004 Wesbrook Mall ,
- R.I. Thompson, University of Calgary ,
- D.P. Van Der Werf, Swansea University ,
- J.S. Wurtele, University of California
- Aarhus Universitet
- Institut for Ingeniørvidenskab - Sustainable Energy Systems
- Institut for Fysik og Astronomi
- Institut for Fysik og Astronomi
We describe the implementation of evaporative cooling of charged particles in the ALPHA apparatus. Forced evaporation has been applied to cold samples of antiprotons held in Malmberg-Penning traps. Temperatures on the order of 10 K were obtained, while retaining a significant fraction of the initial number of particles. We have developed a model for the evaporation process based on simple rate equations and applied it succesfully to the experimental data. We have also observed radial re-distribution of the clouds following evaporation, explained by simple conservation laws. We discuss the relevance of this technique for the recent demonstration of magnetic trapping of antihydrogen.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | A I P Conference Proceedings Series |
| Vol/bind | 1521 |
| Sider (fra-til) | 165-174 |
| Antal sider | 10 |
| ISSN | 0094-243X |
| DOI | |
| Status | Udgivet - 1 jan. 2013 |
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