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

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Coelho, LCC (Author) Other; Lopes, JAM (Author) Other; Covita, DS (Author) Other; Conceicao, AS (Author) Other; dos Santos, JMF (Author) Other

Journal

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

Vol. 575

Pages: 444-448

ISSN: 0168-9002

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 16 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5