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

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

468

Lastpage

471

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 Â±45Â°. 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5401603

Filename

5401603