Transition Crossing in the RHIC
- Brookhaven National Lab. (BNL), Upton, NY (United States). Accelerator Development Dept.
This report summarizes the study of various longitudinal problems pertaining to the transition-energy crossing in the proposed Relativistic Heavy Ion Collider. Scaling laws are provided for the effects of chromatic non-linearity, self-field mismatch, and microwave instability. It is indicated that the beam loss and bunch-area growth are mainly caused by the chromatic non-linear effect, which is enhanced by the space-charge force near transition. Computer simulation using the program TIBETAN shows that a "γτ-jump" of about 0.8 unit within a time period of 60 ms is adequate to achieve a "clean" crossing, provided that the remnant voltage of the 160 MHz rf system is less than 10 kV.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 1119338
- Report Number(s):
- BNL-101996-2013-IR
- Country of Publication:
- United States
- Language:
- English
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