Overcoming intrinsic and synchrotron depolarizing resonances with a Siberian snake

Journal Article · Mon Jun 04 00:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.2779· OSTI ID:7149286

Goodwin, J E; Meyer, H; Minty, M G; Pancella, P V; Pollock, R E; Rinckel, T; Ross, M A; Sperisen, F; Stephenson, E J; von Przewoski, B ^[1]; Courant, E D; Lee, S Y; Ratner, L G ^[2]; Krisch, A D; Raymond, R S; Roser, T; Stewart, J A; Vuaridel, B ^[3]

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1. Indiana University Cyclotron Facility, Bloomington, Indiana 47408 (USA)
2. Brookhaven National Laboratory, Upton, New York 11973 (USA)
3. Randall Laboratory of Physics, The University of Michigan, Ann Arbor, Michigan 48109 (USA)

We overcame the strong {ital G}{gamma}={minus}3+{nu}{sub {ital y}} intrinsic depolarizing resonance using a Siberian snake acting on a stored beam of 177-MeV polarized protons at the Indiana University Cooler Ring. We also saw the first evidence for a synchrotron depolarizing resonance in a proton ring. Two synchrotron resonances were studied by varying the rf accelerating voltage and the imperfection field at 104 MeV. The Siberian snake also overcame these synchrotron depolarizing resonances.

• OSTI ID: 7149286
• Journal Information: Physical Review Letters; (USA), Vol. 64:23; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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POLARIZED BEAMS
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SYNCHROTRONS
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430200* - Particle Accelerators- Beam Dynamics
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