The luminosity monitor of the HERMES experiment at DESY

Authors
Benisch, T Bernreuther, S Devitsin, E Kozlov, V Potashov, S Rith, K Terkulov, A Weiskopf, C
Citation
T. Benisch et al., The luminosity monitor of the HERMES experiment at DESY, NUCL INST A, 471(3), 2001, pp. 314-324
Citations number
23
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
471
Issue
3
Year of publication
2001
Pages
314 - 324
Database
ISI
SICI code
0168-9002(20011001)471:3<314:TLMOTH>2.0.ZU;2-5
Abstract
A detector is described which measures the luminosity of the HERMES experim ent at DESY. It is based on the coincident detection of electron-positron a nd photon pairs, or electron pairs, originating from the interaction of the beam positrons, or electrons, with the electrons of the atomic gas target. It consists of two calorimeters with radiation hard NaBi(WO4)(2) crystals. Properties of the monitor, investigated in an electron test beam, and its performance in the experiment are presented. (C) 2001 Elsevier Science B.V. All rights reserved.