Title :
Performance of a chamber for studying the liquid xenon response to nuclear recoils
Author :
Chepel, V. ; Neves, F. ; Solovov, V. ; Pereira, A. ; Lopes, M.I. ; Da Cunha, J. Pinto ; Mendes, P. ; Lindote, A. ; Suva, C.P. ; Marques, R. Ferreira ; Policarpo, A.J.P.L.
Author_Institution :
Dept. of Phys., Coimbra Univ., Portugal
Abstract :
The design and performance of a 1.2 liter liquid xenon chamber equipped with 7 two-inch photomultiplier tubes is described. The chamber aims at studying the scintillation response of xenon to γ-rays and neutrons. Measurements with γ-rays indicate a high VUV light collection efficiency resulting in ∼5.5 photoelectrons per 1 keV of deposited energy. The energy-resolution (FWHM) is 18% and 22%, obtained with 122 keV and 511 keV γ-rays, respectively. An algorithm for the reconstruction of the scintillation coordinates in (x,y) plane was developed and tested. The position resolution is estimated to be σ=6.9 mm for 122 keV γ-rays.
Keywords :
gamma-ray apparatus; gamma-ray detection; liquid scintillation detectors; neutron detection; photomultipliers; 1.2 liter liquid xenon chamber; 122 keV; 511 keV; VUV light collection efficiency; deposited energy; energy resolution; gamma-rays; liquid xenon nuclear recoil response; neutrons; photomultiplier tubes; position resolution; scintillation coordinate reconstruction algorithm; scintillation response; Electrons; Energy capture; Energy measurement; Energy resolution; Insulation; Neutrons; Particle beams; Photomultipliers; Solid scintillation detectors; Xenon;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1462226
