Korcsak-Gorzo, K. and Grzelak, G. and Oliver, K. and Dawson, M. and Devenish, R. and Ferrando, J. and Matsushita, T. and Shield, P. and Walczak, R. (2007) The optical alignment system of the ZEUS microvertex detector. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 580 (3). pp. 1227-1242. ISSN 0168-9002
Full text not available from this repository.Abstract
The laser alignment system of the ZEUS microvertex detector is described. The detector was installed in 2001 as part of an upgrade programme in preparation for the second phase of electron-proton physics at the HERA collider. The alignment system monitors the position of the vertex detector support structure with respect to the central tracking detector using semi-transparent amorphous-silicon sensors and diode lasers. The system is fully integrated into the general environmental monitoring of the ZEUS detector and data has been collected over a period of 5 years. The primary aim of defining periods of stability for track-based alignment has been achieved and the system is able to measure movements of the support structure to a precision around 10 μ m.