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Phys. Rev. Lett. 100, 203402 (2008) [4 pages]

Radial Compression of an Antiproton Cloud for Production of Intense Antiproton Beams

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N. Kuroda1,2, H. A. Torii2, M. Shibata1, Y. Nagata2, D. Barna3, M. Hori4,5, D. Horváth3, A. Mohri1, J. Eades5, K. Komaki2, and Y. Yamazaki1,2
1Atomic Physics Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
2Institute of Physics, University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
3KFKI Research Institute for Particle and Nuclear Physics, H-1121 Budapest, Hungary
4Max-Planck-Institute für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748, Garching, Germany
5Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

Received 1 October 2007; published 19 May 2008

We report here the radial compression of a large number of antiprotons (∼5×105) in a strong magnetic field under ultrahigh vacuum conditions by applying a rotating electric field. Compression without any resonant structures was demonstrated for a range of frequencies from the sideband frequency of 200 kHz to more than 1000 kHz. The radial compression achieved is a key technique for synthesizing and manipulating antihydrogen atoms and antiprotonic atoms.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.203402
DOI:
10.1103/PhysRevLett.100.203402
PACS:
36.10.−k, 37.20.+j, 52.27.Jt
 
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