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The polarized electron source of the Stanford Linear Accelerator Center [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
5 pages : digital, PDF file
Additional Creators
Stanford Linear Accelerator Center, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The Stanford Linear Accelerator has been running with polarized electrons both in the collider (SLC) mode and in the fixed target mode. The accelerators polarized electron source is based on a thin, strained GaAs photocathode, which is held at a negative high voltage and illuminated by a Titanium Sapphire laser. The reliability of the source was better than 95% during the eight-month-long 1993 SLC run. A beam polarization of 63% was measured by the SLD experiment at the SLC interaction point in the 1993 data run. The fixed-target experiment E143 measured a beam polarization of 85% in its 1993--94 run. These polarization measurements, made at high energy, are in good agreement with measurements made at low energy on a calibrated Mott polarimeter. The higher beam polarization in the fixed target experiment is due to a thinner, more highly strained GaAs photocathode than had been used earlier, and to the experiment`s low beam current requirements. The SLC is now running with the high polarization photocathode. Details of the source, and experience with the high polarization strained GaAs photocathodes on the accelerator in the current SLC run, will be presented.
Report Numbers
E 1.99:slac-pub--6606
E 1.99: conf-9408125--4
conf-9408125--4
slac-pub--6606
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Other Subject(s)
Note
Published through SciTech Connect.
08/01/1994.
"slac-pub--6606"
" conf-9408125--4"
"DE94017933"
17. international LINAC conference,Tsukuba (Japan),21-26 Aug 1994.
Schultz, D.; Frisch, J.; Tang, H.; Alley, R.; Clendenin, J.; Mulhollan, G.; Witte, K.; Saez, P.
Funding Information
AC03-76SF00515
View MARC record | catkey: 14693547