Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4452
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dc.contributor.authorAraújo, H. M.-
dc.contributor.authorBewick, A.-
dc.contributor.authorDavidge, D.-
dc.contributor.authorDawson, J.-
dc.contributor.authorFerbel, T.-
dc.contributor.authorHoward, A. S.-
dc.contributor.authorJones, W. G.-
dc.contributor.authorJoshi, M.-
dc.contributor.authorLebedenko, V.-
dc.contributor.authorLiubarsky, I.-
dc.contributor.authorQuenby, J. J.-
dc.contributor.authorSumner, T. J.-
dc.contributor.authorNeves, F.-
dc.date.accessioned2008-09-01T11:07:21Z-
dc.date.available2008-09-01T11:07:21Z-
dc.date.issued2004en_US
dc.identifier.citationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 521:2-3 (2004) 407-415en_US
dc.identifier.urihttp://hdl.handle.net/10316/4452-
dc.description.abstractA set of 35 photomultiplier tubes (ETL D730/9829Q), intended for use in the ZEPLIN III Dark Matter detector, was tested from room temperature down to -100°C, with the aim of confirming their suitability for detecting xenon scintillation light at 175 nm while immersed in the cryogenic liquid. A general improvement of both gain and quantum efficiency at the xenon scintillation wavelength was observed with cooling, the best combined effect being 40%, while little change was noted in the timing properties and dark current. Saturation of response due to accumulation of charge in the resistive bialkali photocathodes was seen at an average photocurrent of 108 photoelectrons/s for the device with best quantum efficiency, whereas an order of magnitude higher current was required to saturate the least sensitive one. Variations in photocathode thickness from tube to tube could account for this behaviour, as well as the fact that the quantum efficiency improves the most for devices with poorest efficiency at room temperature.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TJM-4B54Y87-7/1/1f3b109a1dce0f3de7e3225f216189eben_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectPhotomultiplier tubesen_US
dc.subjectCooled photomultipliersen_US
dc.subjectLiquid xenonen_US
dc.titleLow-temperature study of 35 photomultiplier tubes for the ZEPLIN III experimenten_US
dc.typearticleen_US
item.grantfulltextopen-
item.languageiso639-1en-
item.fulltextCom Texto completo-
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais
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