Evaporative Cooling of Antiprotons to Cryogenic Temperatures
Plasma Physics
2010-11-22 v1 High Energy Physics - Experiment
Nuclear Experiment
Accelerator Physics
Atomic Physics
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.
Cite
@article{arxiv.1009.4687,
title = {Evaporative Cooling of Antiprotons to Cryogenic Temperatures},
author = {ALPHA Collaboration and G. B. Andresen and M. D. Ashkezari and M. Baquero-Ruiz and W. Bertsche and P. D. Bowe and E. Butler and C. L. Cesar and S. Chapman and M. Charlton and J. Fajans and T. Friesen and M. C. Fujiwara and D. R. Gill and J. S. Hangst and W. N. Hardy and R. S. Hayano and M. E. Hayden and A. Humphries and R. Hydomako and S. Jonsell and L. Kurchaninov and R. Lambo and N. Madsen and S. Menary and P. Nolan and K. Olchanski and A. Olin and A. Povilus and P. Pusa and F. Robicheaux and E. Sarid and D. M. Silveira and C. So and J. W. Storey and R. I. Thompson and D. P. van der Werf and D. Wilding and J. S. Wurtele and Y. Yamazaki},
journal= {arXiv preprint arXiv:1009.4687},
year = {2010}
}
Comments
5 pages, 4 figures