Performance of a correlator filter in betatron tune measurements and damping on the NSLS booster

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5674121

Galayda, J

A ''compensated correlator filter'', described by Kramer, et al. has been used for measurement and damping of betatron oscillations in the NSLS booster. The filter consists of a zero-degree power splitter, a 180-degree splitter, a length of 7/8'' air dielectric coaxial cable, and a short length of RG-58 cable. Connected to a beam position monitor, the output of the filter is proportional to the difference in transverse position of each bunch on subsequent turns. The useful bandwidth of the filter for damping rigid bunch oscillations extends from 10 MHz to 250 MHz, in contrast with the gigahertz bandwidth requirements for stochastic cooling, for which the filter was originally proposed. Attenuation of all rotation harmonics in this bandwidth is 40 to 60 dB.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5674121
• Report Number(s): BNL-36496; CONF-850504-121; ON: DE85012511
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
BEAM COOLING
BEAM DYNAMICS
BEAM MONITORS
BEAM POSITION
BETATRON OSCILLATIONS
CYCLIC ACCELERATORS
MEASURING INSTRUMENTS
MONITORS
NSLS
OSCILLATIONS
PARTICLE BOOSTERS
RADIATION SOURCES
STOCHASTIC COOLING
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
TUNING