Tagging High Energy Photons in the H1 Detector at HERA

Measures taken to extend the acceptance of the H1 detector at HERA for photoproduction events are described. These will enable the measurement of electrons scattered in events in the high y range 0.85 < y < 0.95 in the 1998 and 1999 HERA run period. The improvement is achieved by the installat...

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Published in:arXiv.org 1998-09
Main Authors: Andreev, V F, Belousov, A S, Fomenko, A M, Gorbov, L A, Greenshaw, T, Malinovski, E I, Maxfield, S J, Semenov, A V, Sheviakov, I P, Smirnov, P A, Soloviev, J V, G -G Winter
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Language:English
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Electron beams
Photons
Photoproduction
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container_title arXiv.org
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creator Andreev, V F
Belousov, A S
Fomenko, A M
Gorbov, L A
Greenshaw, T
Malinovski, E I
Maxfield, S J
Semenov, A V
Sheviakov, I P
Smirnov, P A
Soloviev, J V
G -G Winter
description Measures taken to extend the acceptance of the H1 detector at HERA for photoproduction events are described. These will enable the measurement of electrons scattered in events in the high y range 0.85 < y < 0.95 in the 1998 and 1999 HERA run period. The improvement is achieved by the installation of an electromagnetic calorimeter, the ET8, in the HERA tunnel close to the electron beam line 8 m downstream of the H1 interaction point in the electron direction. The ET8 will allow the study of tagged gamma p interactions at centre-of-mass energies significantly higher than those previously attainable. The calorimeter design and expected performance are discussed, as are results obtained using a prototype placed as close as possible to the position of the ET8 during the 1996 and 1997 HERA running.
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subjects Electron beams
Photons
Photoproduction
title Tagging High Energy Photons in the H1 Detector at HERA
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