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Title: Orbit correction in a linear nonscaling fixed field alternating gradient accelerator

In a linear non-scaling FFAG the large natural chromaticity of the machine results in a betatron tune that varies by several integers over the momentum range. In addition, orbit correction is complicated by the consequent variation of the phase advance between lattice elements. Here we investigate how the correction of multiple closed orbit harmonics allows correction of both the COD and the accelerated orbit distortion over the momentum range.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [3] ;  [4] ;  [5]
  1. Rutherford Appleton Lab, Oxfordshire (United Kingdom)
  2. Univ. of Liverpool, Liverpool (United Kingdom); Cockcroft Institute of Accelerator Science and Technology, Warrington (United Kingdom)
  3. STFC Daresbury Lab., Warrington (United Kingdom)
  4. Univ. of Manchester, Manchester (United Kingdom); Cockroft Institute of Accelerator Science and Technology, Warrington (United Kingdom)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
OSTI Identifier:
1165943
Report Number(s):
BNL--107077-2014-JA
Journal ID: ISSN 1098-4402; PRABFM; R&D Project: KBCH139; ArticleNumber: 112806
Grant/Contract Number:
AC02-98CH10886
Type:
Accepted Manuscript
Journal Name:
Physical Review Special Topics. Accelerators and Beams
Additional Journal Information:
Journal Volume: 17; Journal Issue: 11; Journal ID: ISSN 1098-4402
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS