Published April 1996 | Version v1
Journal article Metadata-only

Crossing intrinsic depolarizing resonances by varying a partial Siberian snake

Creators

  • 1. Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)
  • 2. Indiana University Cyclotron Facility, Bloomington, Indiana 47408-0768 (United States)
  • 3. Fermilab, Batavia, Illinois 60510 (United States)
  • 4. KEK, National Laboratory for High Energy Physics, Tsukuba, Ibaraki 305 (Japan)
  • 5. Stanford Linear Accelerator Center, Stanford, California 94309 (United States)

Description

We recently forced a 140 MeV polarized proton beam to cross intrinsic depolarizing resonances by varying a partial Siberian snake close-quote s strength for different values of the vertical and horizontal betatron tunes νy and νx. A weak second-order intrinsic resonance was observed in the νx sweep; moreover, an unexpected partial spin flip was found in the νy sweep. We also varied the snake ramp time to identify the νy and νx regions where the resonance crossings occurred during the snake variation; in these crossings the polarization partially deviated from Froissart-Stora behavior. copyright 1996 The American Physical Society

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
76
Journal Issue
15
Journal Page Range
p. 2714-2717.
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
27075214
Subject category
S43: PARTICLE ACCELERATORS;
Descriptors DEI
BETATRON OSCILLATIONS; BETATRONS; CROSSING-OVER; POLARIZATION; POLARIZED BEAMS; PROTON BEAMS; RESONANCE; SPIN FLIP
Descriptors DEC
ACCELERATORS; BEAM DYNAMICS; BEAMS; CYCLIC ACCELERATORS; DYNAMICS; MECHANICS; NUCLEON BEAMS; OSCILLATIONS; PARTICLE BEAMS