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https://hdl.handle.net/10316/4435
Título: | A study of ageing in timing RPCs | Autor: | Lopes, L. Ferreira-Marques, R. Fonte, P. Piedade, A. P. Policarpo, A. |
Data: | 2004 | Citação: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 533:1-2 (2004) 121-125 | Resumo: | The present study concerns the search for ageing effects in 0.3 mm gap timing RPCs. Counters were made with glass and aluminium electrodes and kept under a continuous gas flow of tetrafluorethane with 10% sulphur hexafluoride, 5% isobutane and water at 10% relative humidity. After 500 days of operation at the saturation current an accumulated charge of 800 mC was collected, equivalent to over 8 years of continuous operation at 300 Hz/cm2. No evidence was found of any long-term increase of dark current, suggesting that the ageing effect in timing RPCs is less severe than in streamer-mode glass RPCs. However, a visual inspection of the electrodes confirmed the existence of a deposit over the glass electrodes that was analysed by Electron Probe Microanalysis. | URI: | https://hdl.handle.net/10316/4435 | DOI: | 10.1016/j.nima.2004.07.013 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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file1bff626ecd254789a0eaeb50b1cfe90b.pdf | 334.04 kB | Adobe PDF | Ver/Abrir |
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