Published October 1992
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The HERA polarimeter and the first observation of electron spin polarization at HERA
Creators
- Barber, D.P.1
- Bremer, H.D.1
- Boege, M.1
- Brinkmann, R.1
- Gianfelice-Wendt, E.1
- Kaiser, H.1
- Klanner, R.1
- Lewin, H.C.1
- Meyners, N.1
- Vogel, W.1
- Brueckner, W.2
- Buescher, C.2
- Dueren, M.2
- Gaul, H.G.2
- Muecklich, A.2
- Neunreither, F.2
- Rith, K.2
- Scholz, C.2
- Steffens, E.2
- Veltri, M.2
- Wander, W.2
- Zapfe, K.2
- Zetsche, F.2
- Chapman, M.3
- Milner, R.3
- Coulter, K.4
- Delheij, P.P.J.5
- Haeusser, O.5
- Henderson, R.5
- Levy, P.5
- Vetterli, M.5
- Green, P.E.W.6, 7
- Kitching, P.6, 7
- Gressmann, H.8
- Janke, T.8
- Micheel, B.8
- Westphal, D.8
- Kaiser, R.9
- Lomperski, M.10
- Lorenson, W.11
- McKeown, R.D.11
- Losev, L.12
- Nowak, W.D.13
- Patel, P.M.14
- 1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- 2. Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)
- 3. Massachusetts Inst. of Tech., Boston, MA (United States)
- 4. Argonne National Lab., IL (United States)
- 5. British Columbia Univ., Vancouver (Canada). TRIUMF Facility
- 6. Simon Fraser Univ., Burnaby, British Columbia (Canada)
- 7. Alberta Univ., Edmonton (Canada)
- 8. Hamburg Univ. (Germany)
- 9. Muenster Univ. (Germany). Inst. fuer Kernphysik
- 10. Wisconsin Univ., Madison, WI (United States). Dept. of Physics
- 11. California Inst. of Tech., Pasadena, CA (United States)
- 12. Lebedev Physical Inst., Moscow (Russia)
- 13. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). Inst. fuer Hochenergiephysik
- 14. McGill Univ., Montreal, Quebec (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.)
Availability note (English)
MF available from INIS under the Report Number.
Files
Restricted
The record is publicly accessible, but files are restricted to users with access.
Additional details
Publishing Information
- Imprint Pagination
- 57 p.
- Report number
- DESY--92-136
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 24030452
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- BACKGROUND RADIATION; BEAM LUMINOSITY; BEAM TRANSPORT; CALIBRATION; CALORIMETERS; COMPTON EFFECT; COUNTING CIRCUITS; DATA ACQUISITION; DATA ACQUISITION SYSTEMS; ELECTRON BEAMS; ELECTRONS; ENERGY DEPENDENCE; ENERGY SPECTRA; ERRORS; GAMMA DETECTION; GAMMA SPECTRA; GAMMA SPECTROSCOPY; HERA STORAGE RING; LASER RADIATION; ON-LINE CONTROL SYSTEMS; OPTICAL SYSTEMS; PHOTON BEAMS; PHOTON-ELECTRON COLLISIONS; PHOTONS; POLARIMETERS; POLARIZATION; POLARIZATION-ASYMMETRY RATIO; POLARIZED BEAMS; SYNCHROTRON RADIATION
- Descriptors DEC
- BASIC INTERACTIONS; BEAMS; BOSONS; BREMSSTRAHLUNG; COLLISIONS; CONTROL SYSTEMS; DETECTION; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; ELECTROMAGNETIC RADIATION; ELECTRON COLLISIONS; ELECTRONIC CIRCUITS; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; LEPTON BEAMS; LEPTONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; ON-LINE SYSTEMS; PARTICLE BEAMS; PHOTON COLLISIONS; RADIATION DETECTION; RADIATIONS; SCATTERING; SPECTRA; SPECTROSCOPY; STORAGE RINGS