TY - JOUR
T1 - Digital pulse processing and electronic noise analysis for improving energy resolutions in planar TlBr detectors
AU - Tada, Tsutomu
AU - Hitomi, Keitaro
AU - Tanaka, Tomonobu
AU - Wu, Yan
AU - Kim, Seong Yun
AU - Yamazaki, Hiromichi
AU - Ishii, Keizo
PY - 2011/5/11
Y1 - 2011/5/11
N2 - Digital pulse processing and electronic noise analysis are proposed for improving energy resolution in planar thallium bromide (TlBr) detectors. An energy resolution of 5.8% FWHM at 662 keV was obtained from a 0.5 mm thick planar TlBr detector at room temperature using a digitizer with a sampling rate of 100 MS/s and 8 bit resolution. The electronic noise in the detectorpreamplifier system was measured as a function of pulse shaping time in order to investigate the optimum shaping time for the detector. The depth of interaction (DOI) in TlBr detectors for incident gamma-rays was determined by taking the ratio of pulse heights for fast-shaped to slow-shaped signals. FWHM energy resolution of the detector was improved from 5.8% to 4.2% by implementing depth correction and by using the obtained optimum shaping time.
AB - Digital pulse processing and electronic noise analysis are proposed for improving energy resolution in planar thallium bromide (TlBr) detectors. An energy resolution of 5.8% FWHM at 662 keV was obtained from a 0.5 mm thick planar TlBr detector at room temperature using a digitizer with a sampling rate of 100 MS/s and 8 bit resolution. The electronic noise in the detectorpreamplifier system was measured as a function of pulse shaping time in order to investigate the optimum shaping time for the detector. The depth of interaction (DOI) in TlBr detectors for incident gamma-rays was determined by taking the ratio of pulse heights for fast-shaped to slow-shaped signals. FWHM energy resolution of the detector was improved from 5.8% to 4.2% by implementing depth correction and by using the obtained optimum shaping time.
KW - Digital pulse processing
KW - Equivalent noise charge
KW - Thallium bromide
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U2 - 10.1016/j.nima.2011.02.070
DO - 10.1016/j.nima.2011.02.070
M3 - Article
AN - SCOPUS:79953327087
SN - 0168-9002
VL - 638
SP - 92
EP - 95
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1
ER -