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Title: Transverse instability of a bunched beam with space charge and wake field

Transverse coherent instability of a bunch in a ring accelerator is studied with space charge and short wake field taken into account. It is assumed that space charge tune shift significantly exceeds the synchrotron tune. The bunch spectrum, instability growth rate and effects of chromaticity are studied over a wide range of parameters. Fast instability caused by coupling of transverse modes is studied as well. It is shown that, for monotonic wakes, the TMCI is possible only with certain sign of the wake. Its threshold is calculated precisely for different bunch and wake forms.
Authors:
 [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Report Number(s):
FERMILAB-PUB-11-213-APC
Journal ID: ISSN 1098-4402; TRN: US1103136
Grant/Contract Number:
AC02-07CH11359
Type:
Published Article
Journal Name:
Physical Review Special Topics. Accelerators and Beams
Additional Journal Information:
Journal Volume: 14; Journal Issue: 9; Journal ID: ISSN 1098-4402
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; INSTABILITY; INSTABILITY GROWTH RATES; SPACE CHARGE; SYNCHROTRONS
OSTI Identifier:
1100788
Alternate Identifier(s):
OSTI ID: 1016876