AGS-booster orbit and resonance correction

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6081041

Milutinovic, J; Ruggiero, A G; Tepikian, S; Weng, W T

A large tune-spread due to space charge and strong random eddy current sextupoles exists at injection in the AGS-Booster. As a result, particles in the beam may cross several imperfection resonances that can be caused by random magnet errors. The correction scheme proposed deals with four half-integer stopband resonances, four third order sextupole induced resonances and both the sum and difference linear coupling resonances. All of these resonances can have a chance to be swept through by the beam during injection bunching and the early stage of acceleration. A system of correctors involving skew quadrupoles, trim quadrupoles and sextupoles is described with the capability of correcting all the major resonances involved, simultaneously. Also a closed orbit correction scheme is described which requires, to be effective, a cascade of local 3-magnet bumps. Several magnet imperfections and survey misalignment errors are investigated. 7 refs., 3 figs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6081041
• Report Number(s): BNL-41868; CONF-890335-69; ON: DE89010576
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
BEAM BUNCHING
BEAM DYNAMICS
BEAM INJECTION
BROOKHAVEN AGS
CALCULATION METHODS
CORRECTIONS
CYCLIC ACCELERATORS
ORBITS
PARTICLE BOOSTERS
RESONANCE
SPACE CHARGE
SYNCHROTRONS