Title :
LAAPD low temperature performance in X-ray and visible-light detection
Author :
Fernandes, L.M.P. ; Lopes, J.A.M. ; Dos Santos, J.M.F. ; Knowles, P.E. ; Ludhova, L. ; Mulhauser, F. ; Kottmann, F. ; Pohl, R. ; Taqqu, D.
Author_Institution :
Dept. de Fisica, Coimbra Univ., Portugal
Abstract :
The performance of a large area avalanche photodiode (LAAPD) has been investigated for x-ray and visible light detection as a function of temperature. Energy resolution was found to improve significantly with decreasing temperature down to 0°C and at a much slower rate below that value, achieving 9.2% for 5.9 keV X-rays at -40°C and a gain of 70. Gain drift of -4.2% per °C at 1700 V bias was obtained for 5.9 keV X-rays and similar values were obtained for visible-light.
Keywords :
X-ray detection; avalanche photodiodes; photodetectors; -40 degC; 0 degC; 1700 V; 5.9 keV; LAAPD low temperature performance; X-ray detection; energy resolution; gain drift; large area avalanche photodiode; visible-light detection; Avalanche photodiodes; Charge carrier processes; Dark current; Electromagnetic coupling; Energy resolution; P-n junctions; Physics; Temperature; X-ray detection; X-ray detectors;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1351813
