2011/11/07 by T. Kikawa, A. K. Ichikawa, Kikawa, T. +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #hep-ex #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1111.1711
9 pages, 13 figures, submitted to Nucl. Instr. and Meth. A
arxiv created 2011/12/21 · arxiv updated 2011/12/22
Semiconductor detectors made of CdTe crystal have high gamma-ray detection efficiency and are usable at room temperature. However, the energy resolution of CdTe detectors for MeV gamma-rays is rather poor because of the significant hole trapping effect. We have developed a method to improve the energy resolution by correcting the pulse height using the waveform of the signal and achieved 2.0% (FWHM) energy resolution for 662keV gamma-rays. Best energy resolution was achieved at temperatures between -10 degrees C and 0 degrees C.