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Phys. Rev. ST Accel. Beams 2, 064001 (1999) [3 pages]

Synchrotron-sideband snake depolarizing resonances

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B. B. Blinov, V. A. Anferov, Ya. S. Derbenev, T. Kageya, A. D. Krisch, W. Lorenzon, D. W. Sivers, K. V. Sourkont, V. K. Wong, and S. S. Youssof
Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120

C. M. Chu, S. Y. Lee, T. Rinckel, P. Schwandt, F. Sperisen, and B. von Przewoski
Indiana University Cyclotron Facility, Bloomington, Indiana 47408-0768

H. Sato
KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan

Received 18 February 1999; published 10 June 1999

We recently created a snake depolarizing resonance using an rf solenoid magnet in a ring containing a nearly 100% Siberian snake. We found that the primary snake rf resonance also had two weaker synchrotron sidebands, which are second-order snake resonances; they were probably caused by the energy-dependent strength of the solenoid snake due to the Lorentz contraction of its longitudinal Ḃ dl. This was the first observation of an rf synchrotron-sideband depolarizing resonance in the presence of a nearly full Siberian snake.

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© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.2.064001
DOI:
10.1103/PhysRevSTAB.2.064001
PACS:
29.27.Hj, 29.27.Bd, 41.75.Ak