A laser-based beam profile monitor for the SLC/SLD interaction region
- Stanford Linear Accelerator Center, Stanford, California, 94309 (United States)
Beam size estimates made using beam-beam deflections are used for optimization of the Stanford Linear Collider (SLC) electron-positron beam sizes. Typical beam sizes and intensities expected for 1996 operations are 2.1{times}0.6{mu}m (x,y) at 4.0{times}10{sup 10} particles per pulse. Conventional profile monitors, such as scanning wires, fail at charge densities well below this. Since the beam-beam deflection does not provide single beam size information, another method is needed for interaction point (IP) beam size optimization. The laser-based profile monitor uses a finely focused, 350-nm, wavelength-tripled yttrium-lithium-flouride (YLF) laser pulse that traverses the particle beam path about 29 cm away from the e{sup +}/e{sup {minus}} IP. Compton scattered photons and degraded e{sup +}/e{sup {minus}} are detected as the beam is steered across the laser pulse. The laser pulse has a transverse size of 380 nm and a Rayleigh range of about 5 {mu}m. This is adequate for present or planned SLC beams. Design and preliminary results will be presented. {copyright} {ital 1997 American Institute of Physics.}
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 526808
- Report Number(s):
- CONF-9605173-; ISSN 0094-243X; TRN: 97:016888
- Journal Information:
- AIP Conference Proceedings, Vol. 390, Issue 1; Conference: 7. workshop on beam instrumentation, Argonne, IL (United States), 6-9 May 1996; Other Information: PBD: Jan 1997
- Country of Publication:
- United States
- Language:
- English
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