Calibration of the mirror system in the HERA-B RICH
arXiv:0710.0747 · doi:10.1016/j.nima.2007.12.007
Abstract
The mirror system of the HERA-B RICH consists of two spherical and two planar mirrors, composed of altogether 116 mirror segments. Analysis of displacements of the Čerenkov 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 is described and the effect of applying the required corrections on the Čerenkov angle resolution of the HERA-B RICH is discussed.
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