The Cherenkov radiator system of the high momentum particle identification detector of the ALICE experiment at CERN-LHC

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• 作者：C. Pastore^b ; ^{cosimo.pastore@ba.infn.it"" rel=""nofollow} ; I. Sgura^a ; G. De Cataldo^a ; A. Franco^a ; U. Fratino^b
• 关键词：HMPID ; C₆F₁₄ ; Liquid system ; PLC control
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2011
• 出版时间：21 May 2011
• 年：2011
• 卷：639
• 期：1
• 页码：231-233
• 全文大小：621 K

文摘

The aim of this paper is to present the design, the implementation and the operational modes of the Liquid Circulation System (LCS) built to circulate, purify and monitor the liquid perfluorohexane (C₆F₁₄) in the ALICE HMPID. The HMPID RICH uses C₆F₁₄ as Cherenkov radiator medium circulating in 21 quartz trays.

LCS features a pressure-regulated closed circuit, ensuring the C₆F₁₄ highest transparency to ultraviolet light. Intrinsically safe working conditions are obtained, thanks to a novel liquid distribution “cascade” system.

Moreover the system is protected against anomalous working conditions by a dedicated Control System, which operates it in both automatic and manual mode, locally and remotely, safeguarding the quartz radiator vessels.