Digital pulse processing and electronic noise analysis for improving energy resolutions in planar TlBr detectors

Tsutomu Tada, Keitaro Hitomi, Tomonobu Tanaka, Yan Wu, Seong Yun Kim, Hiromichi Yamazaki, Keizo Ishii

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)92-95
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume638
Issue number1
DOIs
Publication statusPublished - 2011 May 11

Keywords

  • Digital pulse processing
  • Equivalent noise charge
  • Thallium bromide

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Fingerprint Dive into the research topics of 'Digital pulse processing and electronic noise analysis for improving energy resolutions in planar TlBr detectors'. Together they form a unique fingerprint.

Cite this