Title :
Basic performance of the polarimeter for gamma-ray bursts using MAPMTs and segmented scintillators
Author :
Gunji, S. ; Kishimoto, Y. ; Toukairin, N. ; Tanaka, Y. ; Tokanai, F. ; Sakurai, H. ; Mihara, T. ; Hayashida, K. ; Anabuki, N. ; Tsunemi, H. ; Narita, T. ; Saito, Y. ; Kishimoto, S.
Author_Institution :
Yamagata Univ., Yamagata, Japan
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
We have been designing a polarimeter for gamma-ray bursts (GRBs) sensitive to the energy range from 60 keV to 300 keV. It is a Compton-scattering-type polarimeter and it consists of four modules. The field of view for one module is ±45°. To estimate the performance, it is important to investigate the response for the irradiation from off-axis. So we had basic experiments with polarized beam and computer simulation. As the results, we recognized that it can measure the polarization for 19 GRBs per year at 99% confidence level if the degree of polarization is higher than 40%.
Keywords :
X-ray apparatus; astronomical instruments; astronomical polarimetry; gamma-ray bursts; polarimeters; scintillation counters; Compton-scattering-type polarimeter; computer simulation; gamma-ray bursts; polarimeter design; polarized beam; segmented scintillators; Astrophysics; Collimators; Computer simulation; Extraterrestrial measurements; Gamma ray bursts; Nuclear and plasma sciences; Optical polarization; Optical scattering; Plastics; X-ray scattering;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401603
