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Title: Tune compensation in nearly scaling fixed field alternating gradient accelerators

Journal Article · · Physical Review Accelerators and Beams
ORCiD logo [1];  [2]
  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
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In this paper, we investigate the stability of the particle trajectories in fixed field alternating gradient accelerators (FFAs) in the presence of field errors. The emphasis is on the scaling radial sector FFA type: A collaboration work is ongoing in view of better understanding the properties of the 150 MeV scaling FFA at Kyoto University Institute for Integrated Radiation and Nuclear Science in Japan and progress toward high-intensity operation. Analysis of certain types of field imperfections revealed some interesting features that required the development of an analytical model based on the scalloping angle of the orbits. This helped explain some of the experimental results as well as generalize the concept of a scaling FFA to a nonscaling one for which the tune variations obey a well-defined law. Based on this, a compensation scheme of tune variations in imperfect scaling FFAs is presented. This is the cornerstone of a novel concept of a fixed tune FFA in which the scaling is not achieved at every azimuthal position of the ring but rather in an average sense.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0012704
OSTI ID:
1631943
Report Number(s):
BNL-215964-2020-JAAM; PRABCJ; TRN: US2201039
Journal Information:
Physical Review Accelerators and Beams, Vol. 23, Issue 5; ISSN 2469-9888
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (30)

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Related Subjects

43 PARTICLE ACCELERATORS