E166: Polarized Positrons & Polarimetry

Conference · Tue Dec 06 00:00:00 EST 2011 · AIP Conf.Proc.1160:74-80,2009

OSTI ID:1030932

Schuler, K Peter

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 Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1030932
• Report Number(s): SLAC-REPRINT-2011-125; TRN: US1106060
• Journal Information: AIP Conf.Proc.1160:74-80,2009, Conference: Prepared for International Workshop on Positrons at Jefferson Lab (JPOS 09), Newport News, Virginia, 25-27 Mar 2009
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ELECTRON BEAMS
HARMONICS
IMPLEMENTATION
LINEAR COLLIDERS
PHOTONS
POLARIMETERS
POLARIMETRY
POLARIZATION
POSITRONS
PRODUCTION
STANFORD LINEAR ACCELERATOR CENTER
TUNGSTEN
WIGGLER MAGNETS
Experiment-HEP
HEPEX