Development and characterisation of a gas system and its associated slow-control system for an ATLAS small-strip thin gap chamber testing facility

作者：Keyes R; Johnson K A; Pepin L; Leger F; Qin C; Webster S; Robichaud Veronneau A; Belanger Champagne C; Lefebvre B; Robertson S H; Warburton A^*; Vachon B; Corriveau F

来源：Journal of Instrumentation, 2017, 12(04): P04027.

DOI：10.1088/1748-0221/12/04/P04027

• Gas systems and purification
• Muon spectrometers
• Particle tracking detectors (Gaseous detectors)

A quality assurance and performance qualification laboratory was built at McGill University for the Canadian-made small-strip Thin Gap Chamber (sTGC) muon detectors produced for the 2019-2020 ATLAS experiment muon spectrometer upgrade. The facility uses cosmic rays as a muon source to ionise the quenching gas mixture of pentane and CO2 flowing through the sTGC detector. A gas system was developed and characterised for this purpose, with a simple and efficient gas condenser design utilizing a Peltier thermoelectric cooler (TEC). The gas system was tested to provide the desired 45 vol% pentane concentration. For continuous operations, a state-machine system was implemented with alerting and remote monitoring features to run all cosmic-ray data-acquisition associated slow-control systems, such as high/low voltage, gas system and environmental monitoring, in a safe and continuous mode, even in the absence of an operator.

• 出版日期2017-4