Primary and secondary scintillation measurements in a Xenon Gas Proportional Scintillation Counter

被引：33

作者：

Fernandes, L. M. P. ^{[1
]}

Freitas, E. D. C. ^{[1
]}

Ball, M. ^{[2
]}

Gomez-Cadenas, J. J. ^{[2
]}

Monteiro, C. M. B. ^{[1
]}

Yahlali, N. ^{[2
]}

Nygren, D. ^{[3
]}

dos Santos, J. M. F. ^{[1
]}

机构：

[1] Univ Coimbra, Dept Phys, Instrumentat Ctr, P-3004516 Coimbra, Portugal

[2] Inst Fis Corpuscular, E-46071 Valencia, Spain

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

JOURNAL OF INSTRUMENTATION | 2010年 / 5卷

关键词：

Interaction of radiation with matter; Gaseous detectors; Photon detectors for UV; visible and IR photons (vacuum) (photomultipliers; HPDs; others); DETECTORS;

D O I：

10.1088/1748-0221/5/09/P09006

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

NEXT is a new experiment to search for neutrinoless double beta decay using a 100 kg radio-pure high-pressure gaseous xenon TPC. The detector requires excellent energy resolution, which can be achieved in a Xe TPC with electroluminescence readout. Hamamatsu R8520-06SEL photomultipliers are good candidates for the scintillation readout. The performance of this photomultiplier, used as VUV photosensor in a gas proportional scintillation counter, was investigated. Initial results for the detection of primary and secondary scintillation produced as a result of the interaction of 5.9 keV X-rays in gaseous xenon, at room temperature and at pressures up to 3 bar, are presented. An energy resolution of 8.0% was obtained for secondary scintillation produced by 5.9 keV X-rays. No significant variation of the primary scintillation was observed for different pressures (1, 2 and 3 bar) and for electric fields up to 0.8 V cm(-1) torr(-1) in the drift region, demonstrating negligible recombination luminescence. A primary scintillation yield of 81 +/- 7 photons was obtained for 5.9 keV X-rays, corresponding to a mean energy of 72 +/- 6 eV to produce a primary scintillation photon in xenon.

引用

页数：15

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