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20 April 2024

» arxiv » 1009.4687

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Evaporative Cooling of Antiprotons to Cryogenic Temperatures
ALPHA Collaboration ; 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 ; Y. Yamazaki ;
Date:	23 Sep 2010
Abstract:	We report the application of evaporative cooling to clouds of trapped antiprotons, resulting in plasmas with measured temperature as low as 9~K. We have modeled the evaporation process for charged particles using appropriate rate equations. Good agreement between experiment and theory is observed, permitting prediction of cooling efficiency in future experiments. The technique opens up new possibilities for cooling of trapped ions and is of particular interest in antiproton physics, where a precise emph{CPT} test on trapped antihydrogen is a long-standing goal.
Source:	arXiv, 1009.4687
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