Beam Dynamics in a Spectrometer for the Polarized Positron Production Experiment | |
Batygin, Yuri K. | |
Stanford Linear Accelerator Center | |
关键词: Production; Spectrometers; Accelerators,Accphy; Photons; Polarization; | |
DOI : 10.2172/881535 RP-ID : SLAC-PUB-11827 RP-ID : AC02-76SF00515 RP-ID : 881535 |
|
美国|英语 | |
来源: UNT Digital Library | |
【 摘 要 】
The proposed experiment E-166 at SLAC is designed to demonstrate the possibility of producing longitudinally polarized positrons from circularly polarized photons to be used in future Linear Collider. The experimental set-up utilizes a low emittance 50 GeV electron beam passing through a helical undulator in the Final Focus Test Beam line of the SLAC accelerator. Circularly polarized photons generated by the electron beam in the undulator hit a target and produce electron-positron pairs. The purpose of the post-target spectrometer is to select the positron beam and to deliver it to a polarimeter whilst keeping the positron beam polarization as high as possible. This paper analyzes positron transmission and polarization in the E-166 spectrometer experiment. The positron transmission has a maximum value of 7% for a positron beam energy of 5.5 MeV, while positron polarization is approximately 60%.
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
881535.pdf | 1707KB | download |