Bunch lengthening in the SLC damping ring
In this paper we present the results of measurements of bunch length and bunch shape as a function of current in the SLC e/sup /minus//damping ring. After extraction, the SLC bunch is compressed by means of an RF compressor and a subsequent high dispersion section. By inserting a video screen at a point of large dispersion and by using the correlation between bunch length and energy spread induced by the compressor, we have measured not only the bunch length but also the longitudinal charge distribution of the bunch in the damping ring as a function of beam intensity. At 3 /times/ 10/sup 10/ particles per bunch with a peak ring RF voltage of 800 KV, the FWHM of the bunch length in the ring doubles over the nominal value. To measure the energy spread of the bunch in the damping ring, the optics of the extraction lines was modified to produce a large dispersion but small horizontal ..beta.. function at the video screen. At 3 /times/ 10/sup 10/ particles per bunch, the relative energy spread in the rings is increased by about 30%. Finally, these data are compared with calculations of bunch lengthening in the SLC damping rings. 8 refs., 6 figs.,
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (USA)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 6997844
- Report Number(s):
- SLAC-PUB-4645; CONF-880695-15; ON: DE88012740
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATOR FACILITIES
ACCELERATORS
BEAM BUNCHING
BEAM DYNAMICS
BEAM SHAPING
CAMERAS
CHARGE DISTRIBUTION
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
PHASE SHIFT
RADIATION DETECTORS
STANFORD LINEAR COLLIDER
STORAGE RINGS
STREAK CAMERAS