Xenon GPSC high-pressure operation with large-area avalanche photodiode readout

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Coelho, LCC (Autor) Outra; Lopes, JAM (Autor) Outra; Covita, DS (Autor) Outra; Conceicao, AS (Autor) Outra; dos Santos, JMF (Autor) Outra

Revista

Título: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

Vol. 575

Páginas: 444-448

ISSN: 0168-9002

Indexação

ISI Web of Knowledge - 13 Citações

Scopus - 16 Citações

Outras Informações

ID Authenticus: P-004-9X5

DOI: 10.1016/j.nima.2007.02.111

Abstract (EN): The performance of a xenon high-pressure gas proportional scintillation counter (GPSC) instrumented with a large area avalanche photodiode (LAAPD) as the VUV-photosensor has been investigated for filling pressures from 1 up to 10 bar, for 22- and 60-keV photons. The LAAPD photosensor is placed directly within the xenon envelope, as a substitute for the photomultiplier tube, avoiding the constraints of the use of a quartz scintillation window for GPSC-photosensor coupling, which absorbs a significant amount of scintillation and is a drawback for applications where large detection areas and high filling pressures are needed. The lowest energy resolutions are achieved for pressures around 5 bar (4.5% and 3.0% full width at half-maximum (FWHM), for 22- and 60-keV photons, respectively). Increasing the pressure to the 8 bar range, competitive energy resolutions of 5.0% and 3.6% are still achieved for 22- and 60-keV photons, respectively. This detector could be a compelling alternative in applications where compactness, large detection area, insensitivity to strong magnetic fields, room temperature operation, large signal-to-noise ratio and good energy resolution are important requirements.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5