Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 565, Issue 2, Pages 572-588Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2006.06.049
Keywords
luminosity; spectrometer; calorimeter; HERA; ZEUS
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The upgrade of the HERA accelerator has provided much increased collider luminosity. In turn, the improvements have necessitated a new design for the ZEUS luminosity measurements. The intense synchrotron radiation field, as well as the high probability of a bremsstrahlung photon in each bunch crossing, posed new experimental constraints. In this report, we describe how these challenges were met with the ZEUS luminosity spectrometer system. The design, testing and commissioning of the device are described, and the results from the initial operational experience are reported. (c) 2006 Elsevier B.V. All rights reserved.
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