Phys. Rev. ST Accel. Beams 6, 014001 (2003) [7 pages]

Analysis of helical quadrupole focusing channel

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A. Morita and Y. Iwashita
4Accelerator Laboratory, Nuclear Science Research Facility, Institute for Chemical Research, Kyoto University, Gokanosho, Uji, Kyoto 611, Japan

Received 19 July 2001; revised 4 December 2002; published 8 January 2003

A helical quadrupole focusing channel has continuous field symmetry and a stronger focusing power compared with a conventional FODO focusing channel. The good field symmetry allowed us to construct an explicit transfer matrix under the paraxial approximation. In the present paper, we report the paraxial analysis of the helical quadrupole focusing channel and compare its characteristics with those of a conventional FODO focusing channel.


©2003 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevSTAB.6.014001
DOI: 10.1103/PhysRevSTAB.6.014001
PACS: 41.85.–p

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