Evaporative Cooling of Antiprotons for the Production of Trappable Antihydrogen

被引：0

作者：

Silveira, D. M. ^{[1
]}

Andresen, G. B. ^{[2
]}

Ashkezari, M. D. ^{[3
]}

Baquero-Ruiz, M. ^{[4
]}

Bertsche, W. ^{[5
,6
]}

Bowe, P. D. ^{[2
]}

Butler, E. ^{[7
]}

Cesar, C. L. ^{[1
]}

Chapman, S. ^{[4
]}

Charlton, M. ^{[8
]}

Fajans, J. ^{[4
]}

Friesen, T. ^{[9
]}

Fujiwara, M. C. ^{[10
]}

Gill, D. R. ^{[10
]}

Hangst, J. S. ^{[2
]}

Hardy, W. N. ^{[11
]}

Hayden, M. E. ^{[3
]}

Hydomako, R. ^{[9
]}

Jonsell, S. ^{[12
]}

Kurchaninov, L. ^{[10
]}

Madsen, N. ^{[8
]}

Menary, S. ^{[13
]}

Nolan, P. ^{[14
]}

Olchanski, K. ^{[10
]}

Olin, A. ^{[10
]}

Povilus, A. ^{[4
]}

Pusa, P. ^{[14
]}

Robicheaux, F. ^{[15
]}

Sarid, E. ^{[16
]}

So, C. ^{[4
]}

Storey, J. W. ^{[10
]}

Thompson, R. I. ^{[9
]}

van der Werf, D. P. ^{[8
]}

Wurtele, J. S. ^{[4
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941 Rio De Janeiro, Brazil

[2] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus, Denmark

[3] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[5] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[6] Inst Cockroft, Warrington WA4 4AD, Cheshire, England

[7] CERN, PH Dept, CH-1211 Geneva, Switzerland

[8] Swansea Univ, Coll Sci, Dept Phys, Swansea SA2 8PP, W Glam, Wales

[9] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada

[10] TRIUMF, Vancouver, BC V6T 2A3, Canada

[11] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 2A3, Canada

[12] Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden

[13] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada

[14] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England

[15] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

[16] Nucl Res Ctr Negev, Dept Phys, IL-84190 Beer Sheva, Israel

来源：

NON-NEUTRAL PLASMA PHYSICS VIII | 2013年 / 1521卷

基金：

加拿大自然科学与工程研究理事会; 英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

Antihydrogen; evaporative cooling; Penning trap; PURE ELECTRON-PLASMA; ATOMIC-HYDROGEN;

D O I：

10.1063/1.4796072

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：165 / 174

页数：10

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