| Početna stranica > The high voltage system of the novel MPGD-based photon detectors of COMPASS RICH-1 and its development towards a scalable High Voltage Power Supply System for MPGDs |
| Article | |
| Title | The high voltage system of the novel MPGD-based photon detectors of COMPASS RICH-1 and its development towards a scalable High Voltage Power Supply System for MPGDs |
| Author(s) | Bressan, A (INFN, Trieste ; Trieste U.) ; Carrato, S (INFN, Trieste ; Trieste U.) ; Chatterjee, C (INFN, Trieste) ; Cicuttin, A (ICTP, Trieste ; INFN, Trieste) ; Crespo, M L (ICTP, Trieste ; INFN, Trieste) ; D'Ago, D (INFN, Trieste ; Trieste U.) ; Dalla Torre, S (INFN, Trieste) ; Dasgupta, S (INFN, Trieste ; Bhubaneswar, NISER) ; Ballina E , M G (ICTP, Trieste) ; Florian S , W (ICTP, Trieste ; INFN, Trieste ; Trieste U.) ; Ordóñez, L García (ICTP, Trieste ; INFN, Trieste ; Trieste U.) ; Gregori, M (INFN, Trieste) ; Hamar, G (INFN, Trieste ; Wigner RCP, Budapest) ; Kosoveu, A (INFN, Trieste) ; Levorato, S (INFN, Trieste ; CERN) ; Mannatunga, K (ICTP, Trieste) ; Martin, A (INFN, Trieste ; Trieste U.) ; Tessarotto, F (INFN, Trieste) ; Triloki (INFN, Trieste ; ICTP, Trieste) ; Valinoti, B (ICTP, Trieste ; INFN, Trieste ; Trieste U.) |
| Publication | 2023 |
| Number of pages | 4 |
| In: | Nucl. Instrum. Methods Phys. Res., A 1056 (2023) 168558 |
| In: | 11th International Workshop on Ring Imaging Cherenkov Detectors (RICH 2022), Edinburgh, United Kingdom, 12 - 16 Sep 2022, pp.168558 |
| DOI | 10.1016/j.nima.2023.168558 (publication) |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN SPS ; NA58 |
| Abstract | The COMPASS RICH-1 detector has undergone a major upgrade in 2016 with the installation of four novel MPGD-based photon detectors. They consist of large-size hybrid MPGDs with multi-layer architecture composed of two layers of Thick-GEMs and bulk resistive MicroMegas. A dedicated high voltage power supply system, based on CAEN HV modules, has been built and put in operation: it controls more than 100 HV channels. The system is required to protect the detectors against errors by the operator, monitor voltages and currents at a 1 Hz rate and automatically react to detector misbehavior. It includes also a HV compensation system against environmental pressure and temperature variation to grant the detector stability. The operation of a MPGD based single photon detector poses challenging requirements to the high voltage power supply systems employed in terms of high-resolution diagnostic features and dynamic voltage control. Systems satisfying all the needed features are not commercially available; for this reason a novel single channel high voltage system matching the MPGD needs has been designed and realized. In this article the COMPASS RICH-1 MPGD HV system implementation is described as well as its performance in terms of stability of the novel MPGD-based photon detectors during the physics data taking at COMPASS. The design, implementation and performance of a novel HV power supply system based on DC to DC converters and controlled by a FPGA device is presented. The capabilities of the first prototype of the new single HV channel power supply are illustrated when operated with a MPGD based single photon detector during a test beam exercise. The preliminary result of the multi channel system are briefly discussed. |
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