Title :
The TIGRE instrument for 0.3-100 MeV gamma-ray astronomy
Author :
Tümer, O.T. ; Bhattacharya, D. ; Blair, S.C. ; Case, G.L. ; Liu, C.-J. ; O´Neill, T.J. ; White, R.S. ; Zych, A.D.
Author_Institution :
Inst. of Geophys. & Planetary Phys., California Univ., Riverside, CA, USA
fDate :
30 Oct-5 Nov 1994
Abstract :
The Tracking and Imaging Gamma-Ray Experiment (TIGRE) uses multilayers of silicon strip detectors both as a gamma-ray converter and to track Compton recoil electrons and positron-electron pairs. The direction and energy of the Compton scattered gamma ray and pair particles are measured with arrays of small CsI(Tl)-photodiode detectors. With a large π-steradian field-of-view, TIGRE is sensitive to gamma rays from 0.3 to 100 MeV with a typical energy resolution of 4% (FWHM) and a 1σ angular resolution of 120 arc min. at 2 MeV. The instrument has a high absolute detection efficiency of 8% over the full energy range. The telescope is described and Monte Carlo calculations presented
Keywords :
Monte Carlo methods; astronomical instruments; astronomical telescopes; gamma-ray astronomy; gamma-ray detection; gamma-ray spectrometers; silicon radiation detectors; solid scintillation detectors; 0.3 to 100 MeV; Compton scattering; CsI(Tl) photodiode; CsI:Tl; Monte Carlo; Si; Si strip detectors; TIGRE; angular resolution; detection efficiency; energy resolution; gamma-ray astronomy; Astronomy; Electrons; Energy resolution; Gamma ray detection; Gamma ray detectors; Instruments; Nonhomogeneous media; Optical imaging; Particle scattering; Silicon;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record
Conference_Location :
Norfolk, VA
Print_ISBN :
0-7803-2544-3
DOI :
10.1109/NSSMIC.1994.474524
