E166: Polarized Positrons & Polarimetry
Conference
·
· AIP Conf.Proc.1160:74-80,2009
OSTI ID:1030932
A proof-of-principle experiment has been carried out in the Final Focus Test Beam (FFTB) at Stanford Linear Accelerator Center (SLAC) to demonstrate production of polarized positrons in a manner suitable for implementation at the International Linear Collider (ILC). A helical undulator of 2.54 mm period and 1 -m length produced circularly polarized photons with a first harmonic endpoint energy of 8 MeV when traversed by a 46.6 GeV electron beam. The polarized photons were converted to polarized positrons in a 0.2-radiation-length tungsten target. The polarization of these positrons was measured using a Compton transmission polarimeter to have peak value in excess of 80%.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1030932
- Report Number(s):
- SLAC-REPRINT-2011-125
- Conference Information:
- Journal Name: AIP Conf.Proc.1160:74-80,2009
- Country of Publication:
- United States
- Language:
- English
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