Transverse modes and instabilities of a bunched beam with space charge and resistive wall impedance

Journal Article · Tue Nov 01 00:00:00 EDT 2011 · Physical Review Special Topics - Accelerators and Beams

DOI:https://doi.org/10.1103/PhysRevSTAB.14.094401· OSTI ID:1033678

Balbekov, V

Transverse instability of a bunch in a ring accelerator is considered with space charge and wakefield taken into account. It is assumed that space charge tune shift significantly exceeds the synchrotron tune. Bunch spectrum, instability growth rate, and effects of chromaticity are studied with different bunch and wake forms. Fast instability caused by coupling of transverse modes is studied in detail. It is shown that, for monotonic wakes, the transverse mode coupling instability is possible only with a certain sign of the wake. Its threshold and growth rate are calculated precisely over a wide range of parameters.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1033678
• Report Number(s): FERMILAB-PUB-11-598-APC; TRN: US1200594
• Journal Information: Physical Review Special Topics - Accelerators and Beams, Vol. 14, Issue 9; ISSN 1098-4402
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM BUNCHING
INSTABILITY
INSTABILITY GROWTH RATES
SPACE CHARGE
SYNCHROTRONS
Accelerators