The novel photon detectors based on MPGD technologies for the upgrade of COMPASS RICH-1
Abstract
The RICH-1 Detector of the COMPASS experiment at CERN SPS has undergone an important upgrade in 2016. Four new photon detectors, based on MPGD technology and covering a total active area larger than 1.2~ have replaced the previously used MWPC-based photon detectors. The new detector architecture, resulting from a dedicated, eight years long, R\&D program, consists in a hybrid MPGD combination of two THGEMs and a Micromegas stage; the first THGEM, coated with a CsI layer, acts as a reflective photocathode. The signals are extracted from the anode pads by capacitive coupling and read-out by analog front-end electronics based on the APV25 chip. The new COMPASS RICH-1 photon detectors are described in detail: the detector design, the engineering aspects, the mass production, and the quality assessment are discussed. The assembly of the MPGD components and the installation of the new detectors are illustrated together with the main aspects of the commissioning. Preliminary indication of performance results are also presented.
Cite
@article{arxiv.1804.05765,
title = {The novel photon detectors based on MPGD technologies for the upgrade of COMPASS RICH-1},
author = {J. Agarwala and M. Alexeev and C. D. R. Azevedo and R. Birsa and F. Bradamante and A. Bressan and C. Chatterjee and M. Chiosso and A. Cicuttin and P. Ciliberti and M. L. Crespo and S. Dalla Torre and S. S. Dasgupta and O. Denisov and M. Finger and M. Finger and B. Gobbo and M. Gregori and G. Hamar and S. Levorato and A. Maggiora and A. Martin and G. Menon and J. Novy and D. Panzieri and F. A. B. Pereira and C. A. Santos and G. Sbrizzai and M. Slunecka and K. Steiger and L. Steiger and M. Sulc and F. Tessarotto and J. F. C. A. Veloso and Y. Zhao},
journal= {arXiv preprint arXiv:1804.05765},
year = {2018}
}
Comments
5th International Conference on Micro-Pattern Gas Detectors (MPGD2017), speaker: F.Tessarotto (INFN -Trieste)