Stochastic cooling with a double rf system

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:5521443

Wei, Jie

Stochastic cooling for a bunched beam of hadrons stored in an accelerator with a double rf system of two different frequencies has been investigated. The double rf system broadens the spread in synchrotron-oscillation frequency of the particles when they mostly oscillate near the center of the rf bucket. Compared with the ease of a single rf system, the reduction rates of the bunch dimensions are significantly increased. When the rf voltage is raised, the reduction rate, instead of decreasing linearly, now is independent of the ratio of the bunch area to the bucket area. On the other hand, the spread in synchrotron-oscillation frequency becomes small with the double rf system, if the longitudinal oscillation amplitudes of the particles are comparable to the dimension of the rf bucket. Consequently, stochastic cooling is less effective when the bunch area is close to the bucket area.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5521443
• Report Number(s): BNL-46684; CONF-920315--29; ON: DE92013032
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
BEAM BUNCHING
BEAM COOLING
BEAM DYNAMICS
BEAM EMITTANCE
DIFFERENTIAL EQUATIONS
EQUATIONS
EQUATIONS OF MOTION
OSCILLATIONS
PARTIAL DIFFERENTIAL EQUATIONS
RF SYSTEMS
STOCHASTIC COOLING
SYNCHROTRON OSCILLATIONS