Skew chromaticity in large accelerators

Conference · Mon May 01 00:00:00 EDT 1995

OSTI ID:61197

Peggs, S; Dell, G F

The 2-D ``skew chromaticity`` vector k is introduced when the standard on-momentum description of linear coupling is extended to include off-momentum particles. A lattice that is well decoupled on-momentum may be badly decoupled off-momentum, inside the natural momentum spread of the beam. There are two general areas of concern: (1) the free space in the tune plane is decreased; (2) collective phenomena may be destabilized. Two strong new criteria for head-tail stability in the presence of off-momentum coupling are derived, which are consistent with experimental and operational observations at the Tevatron, and with tracking data from RHIC.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 61197
• Report Number(s): BNL-61167; CONF-950512-60; ON: DE95011564; TRN: AHC29516%%133
• Resource Relation: Conference: 16. Institute of Electrical and Electronic Engineers (IEEE) particle accelerator conference, Dallas, TX (United States), 1-5 May 1995; Other Information: PBD: [1995]
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
FERMILAB TEVATRON
CHROMATIC ABERRATIONS
COMPARATIVE EVALUATIONS
BROOKHAVEN RHIC
ORBIT STABILITY
EIGENVALUES
BEAM OPTICS