Overcoming Intrinsic Spin Resonances with an rf Dipole
Journal Article
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· Physical Review Letters
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- Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
- Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Argonne National Laboratory, 9700 Cass Avenue, Argonne, Illinois 60439 (United States)
- The Institute for Chemical and Physical Research (RIKEN), Wako, Saitama 351 (Japan)
A coherent spin resonance excited by an rf dipole was used to overcome depolarization due to intrinsic spin resonances at the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory. We found that our data are consistent with a full spin flip of a polarized proton beam, without emittance growth, at G{gamma}=12+{nu}{sub z} and 36{minus}{nu}{sub z} , by adiabatically exciting a vertical coherent betatron oscillation using a single rf dipole magnet. The interference pattern observed between the intrinsic spin resonance and the coherent spin resonance agrees well with multiparticle spin simulations based on a simple two-resonance model. The interference pattern can be used for beam diagnostics. {copyright} {ital 1998} {ital The American Physical Society}
- DOE Contract Number:
- FG02-92ER40747; W-31109-ENG-38
- OSTI ID:
- 604451
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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