Ageing tests on the low-resistivity RPC for the ALICE dimuon arm

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Title: Ageing tests on the low-resistivity RPC for the ALICE dimuon arm
Authors: Arnaldi, R.1, Baldit, A.2, Barret, V.2, Bastid, N.2, Blanchard, G.2, Chiavassa, E.1, Cortese, P.1, Crochet, Ph.2, Dellacasa, G.3, De Marco, N.1, Drancourt, C.4, Dupieux, P.2, Espagnon, B.2, Ferretti, A.1 ferretti@to.infn.it, Forestier, B.2, Gallio, M.1, Genoux-Lubain, A.5, Insa, C.2, Jouve, F.2, Lamoine, L.2
Source: Nuclear Instruments & Methods in Physics Research Section A. Aug2003, Vol. 508 Issue 1/2, p106. 4p.
Subjects: Bakelite, Coal gas
Abstract: The trigger for the Dimuon Forward Spectrometer of the forthcoming ALICE experiment at CERN LHC will be provided by low-resistivity, single gap Resistive Plate Chambers working in streamer mode.Different ageing test were performed to measure and improve the life-time of the detector. Dummy chambers have been built to understand the effects of continuous gas flow upon the Bakelite resistivity: the results concerning our standard gas mixture (49% Ar, 40% forane, 7% isobutane and 4% SF6) are reported, and compared with the same mixture in which ∼1% of water vapor is added. Moreover, two ageing test of 1 month each have been carried out at the Gamma Irradiation Facility at CERN during 2001. The efficiency for cosmic rays under γ irradiation of RPCs coated with different thicknesses of linseed oil was measured. After protracted operation, the detectors have shown an increase of the current and of the background rate. The increase is slower in the chamber with a thicker oil coating. [Copyright &y& Elsevier]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Ageing tests on the low-resistivity RPC for the ALICE dimuon arm
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  Data: <searchLink fieldCode="AR" term="%22Arnaldi%2C+R%2E%22">Arnaldi, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Baldit%2C+A%2E%22">Baldit, A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Barret%2C+V%2E%22">Barret, V.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Bastid%2C+N%2E%22">Bastid, N.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Blanchard%2C+G%2E%22">Blanchard, G.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chiavassa%2C+E%2E%22">Chiavassa, E.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cortese%2C+P%2E%22">Cortese, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Crochet%2C+Ph%2E%22">Crochet, Ph.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Dellacasa%2C+G%2E%22">Dellacasa, G.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22De+Marco%2C+N%2E%22">De Marco, N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Drancourt%2C+C%2E%22">Drancourt, C.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Dupieux%2C+P%2E%22">Dupieux, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Espagnon%2C+B%2E%22">Espagnon, B.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ferretti%2C+A%2E%22">Ferretti, A.</searchLink><relatesTo>1</relatesTo><i> ferretti@to.infn.it</i><br /><searchLink fieldCode="AR" term="%22Forestier%2C+B%2E%22">Forestier, B.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Gallio%2C+M%2E%22">Gallio, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Genoux-Lubain%2C+A%2E%22">Genoux-Lubain, A.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Insa%2C+C%2E%22">Insa, C.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Jouve%2C+F%2E%22">Jouve, F.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lamoine%2C+L%2E%22">Lamoine, L.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Instruments+%26+Methods+in+Physics+Research+Section+A%22">Nuclear Instruments & Methods in Physics Research Section A</searchLink>. Aug2003, Vol. 508 Issue 1/2, p106. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Bakelite%22">Bakelite</searchLink><br /><searchLink fieldCode="DE" term="%22Coal+gas%22">Coal gas</searchLink>
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  Data: The trigger for the Dimuon Forward Spectrometer of the forthcoming ALICE experiment at CERN LHC will be provided by low-resistivity, single gap Resistive Plate Chambers working in streamer mode.Different ageing test were performed to measure and improve the life-time of the detector. Dummy chambers have been built to understand the effects of continuous gas flow upon the Bakelite resistivity: the results concerning our standard gas mixture (49% Ar, 40% forane, 7% isobutane and 4% <f>SF6</f>) are reported, and compared with the same mixture in which <f>∼1%</f> of water vapor is added. Moreover, two ageing test of 1 month each have been carried out at the Gamma Irradiation Facility at CERN during 2001. The efficiency for cosmic rays under <f>γ</f> irradiation of RPCs coated with different thicknesses of linseed oil was measured. After protracted operation, the detectors have shown an increase of the current and of the background rate. The increase is slower in the chamber with a thicker oil coating. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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