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Dortmund 2006 – wissenschaftliches Programm

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T: Teilchenphysik

T 304: Detektoren

T 304.1: Vortrag

Dienstag, 28. März 2006, 16:40–16:55, C2-02-176

The ZEUS Luminosity Spectrometer — •Juraj Šutiak1, Miroslav Helbich2, Yujin Ning2, Stathes Paganis2, Zhenhai Ren2, William Schmidke2, Frank Sciulli2, Uwe Schneekloth3, Claudia Büttner1, and Allen Caldwell11Max-Planck-Institut für Physik, München, Germany — 2Nevis Laboratories, Columbia University, Irvington on Hudson, New York 10027 — 3Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany

ZEUS is one of two experiments studying e-p interactions at the HERA collider. Precise knowledge of the luminosity is required to precisely determine the cross-sections of physics processes. The luminosity is measured using the rate of photons produced in the well known bremsstrahlung process epep γ. The upgrade of the HERA accelerator has provided much increased collider luminosity. The intense synchrotron radiation field, as well as the high probability of several bremsstrahlung photons in one bunch-crossing, poses new experimental challenges. An overview of a new detector, the Luminosity Spectrometer, is given. Operational experience and performance in the first two years are described .

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