RPC upgrade project for CMS Phase II

Pedraza-Morales, M. I.; Fagot, A.; Gul, M.; Roskas, C.; Tytgat, M.; Zaganidis, N.; De Souza, S. F.; Santoro, A.; Da Silva De Araujo, F. T.; Aleksandrov, A.; Hadjiiska, R.; Iaydjiev, P.; Rodozov, M.; Shopova, M.; Sultanov, G.; Dimitrov, A.; Litov, L.; Pavlov, B.; Petkov, P.; Petrov, A.; Qian, S. J.; Han, D.; Yi, W.; Avila, C.; Cabrera, A.; Carrillo, C.; Segura, M.; Aly, S.; Assran, Y.; Mahrous, A.; Mohamed, A.; Combaret, C.; Gouzevitch, M.; Grenier, G.; Lagarde, F.; Laktineh, I. B.; Mathez, H.; Mirabito, L.; Shchablo, K.; Bagaturia, I.; Lomidze, D.; Lomidze, I.; Pant, L. M.; Bhatnagar, V.; Gupta, R.; Kumari, R.; Lohan, M.; Singh, J. B.; Amoozegar, V.; Boghrati, B.; Ghasemy, H.; Malmir, S.; Najafabadi, M. M.; Abbrescia, M.; Gelmi, A.; Iaselli, G.; Lezki, S.; Pugliese, G.; Benussi, L.; Bianco, S.; Piccolo, D.; Primavera, F.; Buontempo, S.; Crescenzo, A.; Galati, G.; Fienaga, F.; Orso, I.; Lista, L.; Meola, S.; Paolucci, P.; Voevodina, E.; Braghieri, A.; Montagna, P.; Ressegotti, M.; Riccardi, C.; Salvini, P.; Vitulo, P.; Cho, S. W.; Choi, S. Y.; Hong, B.; Lee, K. S.; Lim, J. H.; Park, S. K.; Goh, J.; Kim, T. J.; Moreno, S. C.; Colin, O. M.; Valencia, F. V.; Bernardino, S. C.; Eysermans, J.; Estrada, C. U.; Reyes-Almanza, R.; Duran-Osuna, M. C.; Ramirez-Sanchez, G.; Sanchez-Hernandez, A.; Rabadan-Trejo, R. I.; Castilla-Valdez, H.; Radi, A.; Hoorani, H.; Muhammad, S.; Shah, M. A.; Crotty, I.

doi:10.1088/1748-0221/15/05/C05072

The Muon Upgrade Phase II of the Compact Muon Solenoid (CMS) aims to guarantee the optimal conditions of the present system and extend the η coverage to ensure a reliable system for the High Luminosity Large Hadron Collider (HL-LHC) period. The Resistive Plate Chambers (RPCs) system will upgrade the off-detector electronics (called link system) of the chambers currently installed chambers and place improved RPCs (iRPCs) to cover the high pseudo-rapidity region, a challenging region for muon reconstruction in terms of background and momentum resolution. In order to find the best option for the iRPCs, an R&D program for new detectors was performed and real size prototypes have been tested in the Gamma Irradiation Facility (GIF++) at CERN. The results indicated that the technology suitable for the high background conditions is based on High Pressure Laminate (HPL) double-gap RPC. The RPC Upgrade Phase II program is planned to be ready after the Long Shutdown 3 (LS3).