Development of a custom on-line ultrasonic vapour analyzer and flow meter for the ATLAS inner detector, with application to Cherenkov and gaseous charged particle detectors

作者：Alhroob M; Bates R; Battistin M; Berry S; Bitadze A; Bonneau P; Bousson N; Boyd G; Bozza G; Crespo Lopez O; Degeorge C; Deterre C; DiGirolamo B; Doubek M; Favre G; Godlewski J; Hallewell G; Hasib A; Katunin S^*; Langevin N; Lombard D; Mathieu M; McMahon S; Nagai K; O'Rourke A; Pearson B; Robinson D; Rossi C; Rozanov A; Strauss M; Vacek V; Zwalinski L

来源：Journal of Instrumentation, 2015, 10(03): C03045.

DOI：10.1088/1748-0221/10/03/C03045

• Gas systems and purification
• Control and monitor systems online
• Detector cooling and thermo-stabilization
• Detector control systems (detector and experiment monitoring and slow-control, systems, architecture, hardware, algorithms, databases)

Precision sound velocity measurements can simultaneously determine binary gas composition and flow. We have developed an analyzer with custom microcontroller-based electronics, currently used in the ATLAS Detector Control System, with numerous potential applications. Three instruments monitor C3F8 and CO2 coolant leak rates into the nitrogen envelopes of the ATLAS silicon microstrip and Pixel detectors. Two further instruments will aid operation of the new thermosiphon coolant recirculator: one of these will monitor air leaks into the low pressure condenser while the other will measure return vapour flow along with C3F8/C2F6 blend composition, should blend operation be necessary to protect the ATLAS silicon tracker under increasing LHC luminosity. We describe these instruments and their electronics.

• 出版日期2015-3