Overcoming weak intrinsic depolarizing resonances with energy-jump.
Conference
·
OSTI ID:917632
In the recent polarized proton runs in the AGS, a 5% partial snake was used successfully to overcome the imperfection depolarizing resonances. A polarized proton beam was accelerated up to the required RHIC injection energy of 25 GeV. However, a significant amount of polarization was lost at 0{sub +{nu}y}, 12{sub +{nu}y} and 36{sub +{nu}y}, which is believed to be partially due to the coupling resonances. To overcome the coupling resonance, an energy-jump was generated by rapidly changing the beam circumference using the powerful AGS RF system. It clearly demonstrates that the novel energy-jump method can successfully overcome coupling resonances and weak intrinsic resonances
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 917632
- Report Number(s):
- ANL-HEP-CP-99-49
- Country of Publication:
- United States
- Language:
- ENGLISH
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