MEASUREMENT OF THE POLARIZATION OF A PULSED ELECTRON-BEAM WITH A MOLLER POLARIMETER IN THE COINCIDENCE MODE

Citation
Kb. Beard et al., MEASUREMENT OF THE POLARIZATION OF A PULSED ELECTRON-BEAM WITH A MOLLER POLARIMETER IN THE COINCIDENCE MODE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 361(1-2), 1995, pp. 46-52
Citations number
7
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
ISSN journal
01689002
Volume
361
Issue
1-2
Year of publication
1995
Pages
46 - 52
Database
ISI
SICI code
0168-9002(1995)361:1-2<46:MOTPOA>2.0.ZU;2-L
Abstract
The Moller polarimeter at the Bates Linear Accelerator Center was used to measure the polarization of an 868-MeV electron beam with a duty c ycle of 0.8%. Longitudinally polarized electrons in the beam were scat tered from polarized atomic electrons in an Fe-Co foil, and the helici ty-dependent scattering asymmetry was measured by detecting both elect rons in coincidence with a pair of Cherenkov counters located symmetri cally on either side of the beam. From the measured asymmetry, the bea m polarization was inferred to be (42.4 +/- 1.7 +/- 1.2)%, where the f irst uncertainty is statistical and the second is systematic.