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Calibration of the mirror system in the HERA-B RICH

✍ Scribed by Marko Starič; Peter Križan

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
275 KB
Volume
586
Category
Article
ISSN
0168-9002

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✦ Synopsis

The mirror system of the HERA-B ring imaging Cherenkov (RICH) counter consists of two spherical and two planar mirrors, composed of altogether 116 mirror segments. Analysis of displacements of the Cherenkov ring center relative to the charged particle track, for given spherical-planar segment pairs, leads to accurate information regarding the orientation of individual mirror segments. The method for mirror calibration is described and the effect of applying the required corrections on the Cherenkov angle resolution of the HERA-B RICH is discussed.

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