TY  - JOUR
AU  - Fernandes, L. M. P.
AU  - Freitas, E. D. C.
AU  - Ball, M.
AU  - Gomez-Cadenas, J. J.
AU  - Monteiro, C. M. B.
AU  - Yahlali, N.
AU  - Nygren, D.
AU  - dos Santos, J. M. F.
PY  - 2010
DA  - 2010//
TI  - Primary and secondary scintillation measurements in a Xenon Gas Proportional Scintillation Counter
T2  - J. Instrum.
JO  - Journal of Instrumentation
SP  - P09006 - 15pp
VL  - 5
PB  - Iop Publishing Ltd
KW  - Interaction of radiation with matter
KW  - Gaseous detectors
KW  - Photon detectors for UV
KW  - visible and IR photons (vacuum) (photomultipliers
KW  - HPDs
KW  - others)
AB  - 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.
SN  - 1748-0221
UR  - http://arxiv.org/abs/1009.2719
UR  - https://doi.org/10.1088/1748-0221/5/09/P09006
DO  - 10.1088/1748-0221/5/09/P09006
LA  - English
N1  - ISI:000283796100003
ID  - Fernandes_etal2010
ER  -