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Studies of RPC detector operation with eco-friendly gas mixtures under irradiation at the CERN Gamma Irradiation Facility
/ Rigoletti, Gianluca (Lyon U.) ; Aielli, Giulio (Rome U., Tor Vergata) ; Alberghi, Gian Luigi (INFN, Bologna) ; Benussi, Luigi (Frascati) ; Bianchi, Antonio (INFN, Turin ; Turin U.) ; Bianco, Stefano (Frascati) ; Stante, Luigi Di (Rome U., Tor Vergata) ; Boscherini, Davide (INFN, Bologna) ; Bruni, Alessia (INFN, Bologna) ; Camarri, Paolo (Rome U.) et al.
Resistive Plate Chamber (RPC) detectors are widely used at the CERN LHC experiments as muon trigger thanks to their excellent time resolution. They are operated with a Freon-based gas mixture containing $C_2 H_2 F_4$ and $SF_6$, both greenhouse gases (GHG) with a very high global warming potential (GWP).The search of new environmentally friendly gas mixtures is necessary to reduce GHG emissions and costs as well as to optimize RPC performance.Several recently available gases with low GWP have been identified as possible replacements for $C_2 H_2 F_4$ and $SF_6$.In particular, eco-friendly gas mixtures based on the HFO-1234ze have been investigated on 1.4 and 2 mm single-gap and double-gap RPCs.The RPC detectors have been tested at the CERN Gamma Irradiation Facility (GIF++), which provides a high energy muon beam combined with an intense gamma source allowing to simulate the background expected at HL-LHC.The performance of RPCs were studied at different gamma rates with the new environmentally friendly gases by measuring ohmic and physics currents, fluorine radicals and HF production, rate capability and induced charge.Preliminary results on the long-term effects on the performance of the detectors are presented in this study..
SISSA, 2020 - 7 p.
- Published in : PoS EPS-HEP2019 (2020) 164
Fulltext: PDF;
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.164
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Eco-friendly gas mixtures for future RPC detectors
/ Proto, G (INFN, Rome2 ; Rome U.) ; Abbrescia, M (Bari U.) ; Aielli, G (Rome U.) ; Alberghi, G (INFN, Bologna) ; Aly, R (Bari U.) ; Arena, M C (Pavia U.) ; Barroso, M (Rio de Janeiro State U.) ; Benussi, L (Frascati) ; Bianchi, A (INFN, Turin ; Turin U.) ; Bianco, S (Frascati) et al.
Since a few years a joint collaboration between ALICE, ATLAS, CMS, LHCb/SHiP and CERN EP-DT groups is in place with the goal to study the performance of RPCs operated with eco-friendly gas mixtures under different irradiation conditions at GIF++.
The performance of several chambers with different layout and electronics has been studied during dedicated beam tests, with and without gamma irradiation at GIF++. The RPCs have been operated with different gas mixtures based on $\rm{CO_{2}}$ and HFO1234ze gases. [...]
2022 - 4 p.
- Published in : PoS ICHEP2022 (2022) 1195
Fulltext: PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.1195
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Exploring Eco-Friendly Gas Mixtures for Resistive Plate Chambers: A Comprehensive Study on Performance and Aging
/ RPC ECOGas@GIF++ Collaboration
Resistive Plate Chambers (RPCs) are gaseous detectors widely used in high energy physics experiments, operating with a gas mixture primarily containing Tetrafluoroethane (C$_{2}$H$_{2}$F$_{4}$), commonly known as R-134a, which has a global warming potential (GWP) of 1430. To comply with European regulations and explore environmentally friendly alternatives, the RPC EcoGas@GIF++ collaboration, involving ALICE, ATLAS, CMS, LHCb/SHiP, and EP-DT communities, has undertaken intensive R&D; efforts to explore new gas mixtures for RPC technology. [...]
arXiv:2402.19395.-
2024-08-22 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1068 (2024) 169747
Fulltext: Publication - PDF; 2402.19395 - PDF;
In : 3rd International Conference on Detector Stability and Aging Phenomena in Gaseous Detectors, CERN, Geneva, Switzerland, 6 - 10 Nov 2023, pp.169747
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