Polarized Positrons at a Future Linear Collider and the Final Focus Test Beam
Having both the positron and electron beams polarized in a future linear e{sup +}e{sup -} collider is a decisive improvement for many physics studies at such a machine. The motivation for polarized positrons, and a demonstration experiment for the undulator-based production of polarized positrons are reviewed. This experiment (''E-166'') uses the 50 GeV Final Focus Test electron beam at SLAC with a 1 m-long helical undulator to make {approx} 10MeV polarized photons. These photons are then converted in a thin ({approx} 0.5 radiation length) target into positrons (and electrons) with about 50% polarization.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 839625
- Report Number(s):
- SLAC-PUB-10842; TRN: US0503887
- Country of Publication:
- United States
- Language:
- English
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