The upgrade project of the RICH-1 of the COMPASS Experiment

Abbon, P. and Alekseev, M. and Angerer, H. and Birsa, R. and Bordalo, M. and Bradamante, F. and Bressan, A. and Busso, L. and Chiosso, Michela and Ciliberti, P. and Cobanoglu, Ö. and Colantoni, M. L. and Dalla Torre, S. and Dafni, T. and Delagnes, E. and Deshamps, H. and Diaz, V. and Dibiase, N. and Duic, V. and Eyrich, W. and Faso, D. and Ferrero, A. and Finger, M. and Finger Jr., M. and Fischer, H. and Gerassimov, S. and Giorgi, M. and Gobbo, B. and Hagemann, R. and von Harrach, D. and Heinsius, F. H. and Joosten, R. and Ketzer, B. and Königsmann, K. and Kolosov, V. N. and Konorov, I. and Kunne, F. and Lehmann, A. and Levorato, S. and Maggiora, A. and Magnon, A. and Mann, A. and Martin, A. and Mazza, G. and Menon, G. and Mutter, A. and Nahle, O. and Nerling, F. and Neyret, D. and Panebianco, S. and Panzieri, D. and Paul, S. and Pesaro, G. and Polak, J. and Rebourgeard, D. and Robinet, F. and Rocco, E. and Schiavon, P. and Schill, C. and Schröder, W. and Silva, L. and Slunecka, M. and Sozzi, F. and Steiger, L. and Sulc, M. and Svec, M. and Takekawa, S. and Tessarotto, F. and Teufel, A. and Wollny, H. (2009) The upgrade project of the RICH-1 of the COMPASS Experiment. Il nuovo cimento C, 32 (3\4). pp. 407-412. ISSN 1826-9885

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A major upgrade of the RICH-1 of the COMPASS Experiment at CERN has been designed and implemented in less than two years, during the SPS shut-down period and the upgraded detector is successfully in operation since the 2006 SPS run. It is a twofold project: in the peripheral region the existing Multi Wires Proportional Chambers with CsI are unchanged but they have been equipped with a new faster read-out electronics, while the photon detectors of the central region have been replaced with a completely new fast photon-detection system. It is based on the use of Multi-Anode Photo-Multipliers (MAPMTs) coupled to individual fused silica lens telescopes and read out by a fast electronics based on the MAD4 preamplifier-discriminator chip and the F1 TDC chip. For the 2009 SPS run an upgraded version of the MAD4 chip, the CMAD, has been designed in CMOS technology and implemented on the RICH-1, in order to match the specific features imposed by the fast MAPMTs, which guarantee full efficiency up to 5MHz per channel, thus overcoming the limitation of MAD4 at 1MHz per channel. We present the photon-detection design and construction and its characterization and measured performances. The full-custom ASIC CMAD will be also shortly described together with its performances.

Item Type: Article
Uncontrolled Keywords: Cherenkov detectors ; Imaging detectors and sensors ; Microelectronics: LSI, VLSI, ULSI; integrated circuit fabrication technology
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 26 Mar 2020 20:32
Last Modified: 26 Mar 2020 20:32

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