Calibration of the mirror system in the HERA-B RICH
Marko Stari\v{c}, Peter Kri\v{z}an
TL;DR
This paper presents a method for calibrating the mirror system in the HERA-B RICH detector by analyzing Cherenkov ring displacements to improve angular resolution.
Contribution
It introduces a new calibration technique for mirror segments in the HERA-B RICH, enhancing the accuracy of Cherenkov angle measurements.
Findings
Calibration improves Cherenkov angle resolution.
Segment orientation corrections are effectively determined.
Method enhances detector performance.
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 \v{C}erenkov 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 \v{C}erenkov angle resolution of the HERA-B RICH is discussed.
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