Construction and test of the SM1 type Micromegas chambers for the upgrade of the ATLAS forward muon spectrometer

Agarwala, J.; Alviggi, M. G.; Antonelli, M.; Anulli, F.; Arcangeletti, C.; Auricchio, S.; Bagnaia, P.; Bariani, S.; Baroncelli, A.; Bashta, I.; Bauce, M.; Beretta, M.; Bini, C.; Calabro, D.; Camerlingo, M. T.; Canale, V.; Capitolo, E.; Capponi, M.; Capradossi, G.; Carducci, G.; Caserio, A.; Cassese, C.; Cerioni, S.; Chiarella, V.; Ciapetti, G.; D'Amico, V.; De Cecco, S.; De Fazio, B.; Del Gaudio, M.; Di Donato, C.; Di Nardo, R.; D'Uffizi, D.; Farilla, A.; Farina, E.; Ferrari, R.; Fiore, G.; Frattari, G.; Freddi, A.; Gaudio, G.; Gauzzi, P.; Giagu, S.; Gigli, S.; Gnesi, I.; Gorini, E.; Gravili, F. G.; Greco, M.; Iaciofano, A.; Iengo, P.; Innocente, A.; Introzzi, G.; Iodice, M.; Ippolito, V.; Charalampidi, A. Kourkoumeli; Lacava, F.; Lalli, E.; Lanza, A.; Lauciani, S.; Laurelli, P.; Luminari, L.; Mancini, G.; Martinelli, L.; Massarotti, P.; Miccoli, A.; Mirto, A.; Negri, A.; Orestano, D.; Paruzza, G.; Pepe, M.; Petruccetti, M.; Petrucci, F.; Pezzotti, L.; Pileggi, G.; Pirola, M.; Piscitelli, C.; Polesello, G.; Policicchio, A.; Pontoriere, G.; Ponzio, B.; Primavera, M.; Rebuzzi, D.; Rimoldi, A.; Romano, E.; Roscilli, L.; Rovelli, G.; Russo, V.; Sansoni, A.; Tehrani, F. Safai; Scagliotti, C.; Schioppa, M.; Sekhniaidze, G.; Sessa, M.; Sottocornola, S.; Trattino, P.; Tskhadadze, E.; Turco, P.; Vannicola, D.; Vannoli, L.; Vassilieva, T.; Vecchio, V.; Ventura, A.; Vercellati, F.; Vilucchi, E.; Zullo, A. and Zunica, G. (2022): Construction and test of the SM1 type Micromegas chambers for the upgrade of the ATLAS forward muon spectrometer. In: Nuclear Instruments & Methods in Physics Research. Section A - Accelerators Spectrometers Detectors and Associated Equipment, Vol. 1040, 167285

Abstract

Large-size Resistive Micromegas have been chosen for the upgrade of the forward muon spectrometer of the ATLAS experiment, the New Small Wheel project. These chambers, together with small-strip Thin Gap Chambers (sTGC), allow reconstruction of high-momentum muon tracks in a high-radiation environment and provide a robust low-threshold single-muon trigger. A collaboration of seven INFN units built 32 SM1 type chambers, corresponding to one fourth of the total number needed for this upgrade. Each SM1 chamber has a surface of approximately 2 m(2) and four sensitive layers. The production was shared among five INFN construction sites and it was completed in fall 2020. The construction methods, as well as the results of the quality tests done on components of the detector and on the assembled chambers, are reported in the present paper.

• Item Type: Journal article
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 0168-9002
• Language: English