Published May 15, 1993 | Version v1
Journal article Metadata-only

The HERA polarimeter and the first observation of electron spin polarization at HERA

Creators

  • 1. DESY, Hamburg (Germany)
  • 2. Max-Planck-Inst. fuer Kernphysik, Heidelberg (Germany)
  • 3. Massachusetts Inst. of Tech., Boston, MA (United States)
  • 4. Argonne National Lab. (United States)
  • 5. TRIUMF, Vancouver, BC (Canada)
  • 6. Univ. Alberta, Edmonton, AB (Canada)
  • 7. Univ. Hamburg (Germany)
  • 8. Simon Fraser Univ., Vancouver, BC (Canada)
  • 9. Univ. Muenster (Germany)
  • 10. Univ. Wisconsin, Madison, WI (United States)
  • 11. California Inst. of Tech., Pasadena, CA (United States)
  • 12. Lebedev Physical Inst., Moscow (Russia)
  • 13. DESY, Inst. fuer Hochenergiephysik, Zeuthen (Germany)
  • 14. McGill Univ., Montreal, PQ (Canada)

Description

Electron spin polarizations of about 8% were observed at HERA in November 1991. In runs during 1992, utilizing special orbit corrections, polarization values close to 60% have been achieved. In this paper the polarimeter, the machine conditions, the data analysis, the first results and plans for future measurements are described. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section A
Journal Volume
329
Journal Issue
1/2
Journal Page Range
p. 79-111.
ISSN
0168-9002
CODEN
NIMAER

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
24051076
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S43: PARTICLE ACCELERATORS;
Descriptors DEI
BACKGROUND RADIATION; BEAM FOCUSING MAGNETS; BEAM LUMINOSITY; BEAM MONITORING; BEAM POSITION; BEAM TRANSPORT; CALIBRATION; CALORIMETERS; COMPTON EFFECT; COUNTING CIRCUITS; DATA ACQUISITION SYSTEMS; ELECTRON BEAMS; ELECTRONS; ENERGY SPECTRA; ERRORS; GAMMA SPECTRA; GAMMA SPECTROSCOPY; GAS LASERS; GEV RANGE 10-100; HERA STORAGE RING; LASER RADIATION; OPTICAL SYSTEMS; PHOTON-ELECTRON INTERACTIONS; PHOTONS; POLARIMETERS; POLARIZATION-ASYMMETRY RATIO; POLARIZED BEAMS; QUADRUPOLES; SYNCHROTRON RADIATION
Descriptors DEC
AMPLIFIERS; BASIC INTERACTIONS; BEAMS; BOSONS; BREMSSTRAHLUNG; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; ELECTROMAGNETIC RADIATION; ELECTRONIC CIRCUITS; ELEMENTARY PARTICLES; ENERGY RANGE; EQUIPMENT; FERMIONS; GEV RANGE; INTERACTIONS; LASERS; LEPTON BEAMS; LEPTONS; MAGNETS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; MONITORING; MULTIPOLES; PARTICLE BEAMS; PARTICLE INTERACTIONS; PHOTON-LEPTON INTERACTIONS; RADIATIONS; SCATTERING; SPECTRA; SPECTROSCOPY; STORAGE RINGS

Optional Information

Notes
Also published as report DESY--92-136; Oct 1992, 57 p.