E166: Polarized Positrons and Polarimetry

Journal Article · Wed Sep 02 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3232037· OSTI ID:21344543

Schueler, K Peter ^[1]

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1. DESY, D-22607 Hamburg (Germany)

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%.

• OSTI ID: 21344543
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1160; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BASIC INTERACTIONS
BEAM PRODUCTION
BEAMS
COMPTON EFFECT
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTRON BEAMS
ENERGY RANGE
EQUIPMENT
GEV RANGE
INTERACTIONS
LEPTON BEAMS
LINEAR ACCELERATORS
LINEAR COLLIDERS
MAGNETS
MEV RANGE
NATIONAL ORGANIZATIONS
PARTICLE BEAMS
PHOTON BEAMS
POLARIMETERS
POLARIMETRY
POLARIZED BEAMS
SCATTERING
STANFORD LINEAR ACCELERATOR CENTER
US DOE
US ERDA
US ORGANIZATIONS
WIGGLER MAGNETS