Overcoming intrinsic and synchrotron depolarizing resonances with a Siberian snake

• Published in: Physical review letters Vol. 64; no. 23; pp. 2779 - 2782
• Main Authors: Goodwin, JE, Meyer, HO, Minty, MG, Pancella, PV, Pollock, RE, Rinckel, T, Ross, MA, Sperisen, F, Stephenson, EJ, von Przewoski B, Courant, ED, Lee, SY, Ratner, LG, Krisch, AD, Raymond, RS, Roser, T, Stewart, JA, Vuaridel, B
• Format: Journal Article
• Language: English
• Published: United States 04-06-1990
• Subjects: 430200 - Particle Accelerators- Beam Dynamics, Field Calculations, & Ion Optics; ACCELERATION; ACCELERATORS; BARYONS; BEAM DYNAMICS; BEAMS; CYCLIC ACCELERATORS; DATA; ELEMENTARY PARTICLES; ENERGY RANGE; EXPERIMENTAL DATA; FERMIONS; HADRONS; INFORMATION; ION RINGS; MEV RANGE; MEV RANGE 100-1000; NUCLEONS; NUMERICAL DATA; ORIENTATION; PARTICLE ACCELERATORS; POLARIZED BEAMS; PROTONS; RESONANCE; SPIN ORIENTATION; SYNCHROTRONS
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.64.2779

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.