Cryogenic control system of the large COMPASS polarized target

被引:3
|
作者
Gautheron, F [1 ]
Ball, J
Baum, G
Berglund, P
Doshita, N
Goertz, S
Gustafsson, K
Horikawa, N
Kisselev, Y
Koivuniemi, J
Kondo, K
Meyer, W
Reicherz, G
机构
[1] Univ Bielefeld, Dept Phys, D-33501 Bielefeld, Germany
[2] CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France
[3] Helsinki Univ Technol, Low Temp Lab, Espoo 02015, Finland
[4] Univ Helsinki, Inst Phys, FIN-00014 Helsinki, Finland
[5] Nagoya Univ, Sch Sci, Dept Phys, Nagoya, Aichi 4648602, Japan
[6] Ruhr Univ Bochum, Dept Phys, D-44780 Bochum, Germany
[7] Chubu Univ, Coll Engn, Kasugai, Aichi 4878501, Japan
关键词
slow control; polarized target; dilution refrigerator; COMPASS;
D O I
10.1016/j.nima.2004.03.166
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The dilution refrigerator used to cool the large COMPASS polarized target is monitored through a PC running LabVIEW(TM) 6.1 under Windows 2000(TM). About 60 parameters of the target (temperatures, pressures, flow rates) are continuously plotted and checked. They are periodically recorded in an Oracle(TM) database and in a data file. An alarm for every parameter can be individually activated and optionally connected to a GSM (Global System for Mobile Communication) delivery message system. A web server receives and publishes the online status of the target with online tables and graphics on a dedicated COMPASS polarized target information web site. A Siemens programmable logic controller (PLC) powered by an uninterruptable source keeps the cryogenic system safe and stable during the long beam periods by controlling valves and interlocks. This safety feature protects the dilution refrigerator against potential damages in case of power failure. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:147 / 152
页数:6
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