OPERA is part of CNGS project and it is an experiment dedicated to the observation of long-baseline vμinto vτoscillations through τ appearance. Resistive Plate Chambers, RPCs, with bakelite electrodes are used for instrumenting the 2 cm gaps between the magnetized iron slabs of the two spectrometers. The RPCs installation in the first spectrometer ended in May 2004. Before the installation, every RPC is subject to a complete test chain for rejecting the worst quality detectors. The tests are performed in dedicated facilities for ensuring the proper RPC gluing, for measuring its electrical properties and for verifying the response to cosmic rays and the intrinsic noisiness. We have also tested the long term stability of real size OPERA RPC prototypes operated at cosmic ray fluxes for more than one year, which is equivalent, in terms of detectors countings, to about 20 OPERA years. On small size prototypes we are performing studies on the gas mixtures in order to reduce the total charge released in the gas for each detector count. The validation of the installed RPCs has been performed with pure nitrogen. A small part of them has been also tested with the gas mixture Ar/C2H2F4/i - C4H10/SF6= 75.4/20/4/0.6. © 2004 IEEE.

Paoloni, A., Corradi, G., Di Troia, C., Felici, G., Gambarara, A., Grianti, F., et al. (2004). The OPERA spectrometer RPC system. In 2004 IEEE Nuclear Science Symposium Conference Record (pp.502-506). New York : IEEE.

The OPERA spectrometer RPC system

Corradi, G;Terranova, F;
2004

Abstract

OPERA is part of CNGS project and it is an experiment dedicated to the observation of long-baseline vμinto vτoscillations through τ appearance. Resistive Plate Chambers, RPCs, with bakelite electrodes are used for instrumenting the 2 cm gaps between the magnetized iron slabs of the two spectrometers. The RPCs installation in the first spectrometer ended in May 2004. Before the installation, every RPC is subject to a complete test chain for rejecting the worst quality detectors. The tests are performed in dedicated facilities for ensuring the proper RPC gluing, for measuring its electrical properties and for verifying the response to cosmic rays and the intrinsic noisiness. We have also tested the long term stability of real size OPERA RPC prototypes operated at cosmic ray fluxes for more than one year, which is equivalent, in terms of detectors countings, to about 20 OPERA years. On small size prototypes we are performing studies on the gas mixtures in order to reduce the total charge released in the gas for each detector count. The validation of the installed RPCs has been performed with pure nitrogen. A small part of them has been also tested with the gas mixture Ar/C2H2F4/i - C4H10/SF6= 75.4/20/4/0.6. © 2004 IEEE.
paper
OPERA; RPCs; Radiation; Nuclear and High Energy Physics; Radiology, Nuclear Medicine and Imaging
English
2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors
2004
Seibert, JA
2004 IEEE Nuclear Science Symposium Conference Record
0-7803-8700-7
2004
1
502
506
N16-55
none
Paoloni, A., Corradi, G., Di Troia, C., Felici, G., Gambarara, A., Grianti, F., et al. (2004). The OPERA spectrometer RPC system. In 2004 IEEE Nuclear Science Symposium Conference Record (pp.502-506). New York : IEEE.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/189155
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