An Undulator Based Polarized Positron Source for CLIC

Conference · Mon Jul 02 04:00:00 EDT 2012 · Conf.Proc.C100523:THPEC035,2010

OSTI ID:1045201

Liu, Wanming; Gai, Wei; Rinolfi, Louis; Sheppard, John

A viable positron source scheme is proposed that uses circularly polarized gamma rays generated from the main 250 GeV electron beam. The beam passes through a helical superconducting undulator with a magnetic field of {approx} 1 Tesla and a period of 1.15 cm. The gamma-rays produced in the undulator in the energy range between {approx} 3 MeV - 100 MeV will be directed to a titanium target and produce polarized positrons. The positrons are then captured, accelerated and transported to a Pre-Damping Ring (PDR). Detailed parameter studies of this scheme including positron yield, and undulator parameter dependence are presented. Effects on the 250 GeV CLIC main beam, including emittance growth and energy loss from the beam passing through the undulator are also discussed.

• Research Organization: SLAC National Accelerator Laboratory (SLAC)
• Sponsoring Organization: US DOE Office of Science (DOE SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1045201
• Report Number(s): SLAC-PUB-15140
• Conference Information: Journal Name: Conf.Proc.C100523:THPEC035,2010
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
Accelerators
ACCPHY
ELECTRON BEAMS
ENERGY RANGE
MAGNETIC FIELDS
POSITRON SOURCES
POSITRONS
TARGETS
TITANIUM
WIGGLER MAGNETS