HIGH-SPIN POLARIZATION AT THE HERA ELECTRON STORAGE-RING

Authors
BARBER DP BOGE M BOTTCHER H BREMER HD BRINKMANN R BRUCKNER W DUREN M GIANFELICEWENDT E KAISER R KLANNER R LEWIN HC LOMPERSKI M MEYNERS N NOWAK WD PATEL PM RIPKEN G RITH K ROLOFF HO STEFFENS E WESTPHAL D ZAPFE K ZETSCHE F
Citation
Dp. Barber et al., HIGH-SPIN POLARIZATION AT THE HERA ELECTRON STORAGE-RING, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 338(2-3), 1994, pp. 166-184
Citations number
37
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
338
Issue
2-3
Year of publication
1994
Pages
166 - 184
Database
ISI
SICI code
0168-9002(1994)338:2-3<166:HPATHE>2.0.ZU;2-K
Abstract
This paper describes the progress made in 1992 towards increasing the vertical electron beam polarization at HERA. Utilizing harmonic spin-o rbit corrections and beam tuning, the vertical polarization has been i ncreased from 15% to nearly 60% at a beam energy of 26.7 GeV. The long -term reproducibility of the polarization is excellent. Measurements o f the build-up time and the energy dependence of the polarization are also described.