{"paper":{"title":"Evaporative Cooling of Antiprotons to Cryogenic Temperatures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex","physics.acc-ph","physics.atom-ph"],"primary_cat":"physics.plasm-ph","authors_text":"10), (10) Stockholm University, (11) York University, (12) University of Liverpool, (13) Auburn University, (14) NRCN-Nuclear Research Center Negev, 15), 15) ((1) Aarhus University, (15) RIKEN Advanced Science Institute), (2) Simon Fraser University, (3) University of California at Berkeley, (4) Swansea University, (5) Universidade Federal do Rio de Janeiro, (6) University of Calgary, (7) 7TRIUMF, (8) University of British Columbia, (9) University of Tokyo, A. Humphries (4), ALPHA Collaboration: G. B. Andresen (1), A. Olin (7), A. Povilus (3), C. L. Cesar (5), C. So (3), D. M. Silveira (9, D. P. van der Werf (4), D. R. Gill (7), D. Wilding (4), E. Butler (4), E. Sarid (14), F. Robicheaux (13), J. Fajans (3), J. S. Hangst (1), J. S. Wurtele (3), J. W. Storey (7), K. Olchanski (7), L. Kurchaninov (7), M. Baquero-Ruiz (3), M. C. Fujiwara (7), M. Charlton (4), M. D. Ashkezari (2), M. E. Hayden (2), N. Madsen (4), P. D. Bowe (1), P. Nolan (12), P. Pusa (12), R. Hydomako (6), R. I. Thompson (6), R. Lambo (5), R. S. Hayano (9), S. Chapman (3), S. Jonsell (4, S. Menary (11), T. Friesen (6), W. Bertsche (4), W. N. Hardy (8), Y. Yamazaki (9","submitted_at":"2010-09-23T19:34:29Z","abstract_excerpt":"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."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.4687","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}