Evaporative Cooling of Antiprotons to Cryogenic Temperatures

Details Evaporative Cooling of Antiprotons to Cryogenic Temperatures Evaporative Cooling of Antiprotons to Cryogenic Temperatures

2010-09-23

arxiv.org/abs/1009.4687v1

Phys.Rev.Lett.105:013003,2010

Physics

Plasma Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.105.013003

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.

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