Spin-depolarization mechanisms due to overlapping spin resonances in synchrotrons

Journal Article · Sat May 01 00:00:00 EDT 1993 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States)

DOI:https://doi.org/10.1103/PhysRevE.47.3631· OSTI ID:6475731

Lee, S Y ^[1]

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1. Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)

We studied depolarization mechanisms of polarized-proton acceleration in high-energy accelerators with snakes and found that the perturbed spin tune due to the imperfection resonance plays an important role in beam depolarization at snake resonances. We also found that [ital even]-order snake resonances exist in the overlapping intrinsic and imperfection resonances. Due to the perturbed spin tune of imperfection resonances, each snake resonance splits into two. Thus the available betatron tune space becomes smaller. Some constraints on polarized-beam colliders were also examined.

• DOE Contract Number: FG02-92ER40747
• OSTI ID: 6475731
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States), Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States) Vol. 47:5; ISSN PLEEE8; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
ANGULAR MOMENTUM
BEAMS
BETATRONS
COLLIDING BEAMS
CYCLIC ACCELERATORS
DEPOLARIZATION
NUCLEON BEAMS
PARTICLE BEAMS
PARTICLE PROPERTIES
POLARIZED BEAMS
PROTON BEAMS
RESONANCE
SPIN
SYNCHROTRONS