NDLI: Polarimetric performance study of a CZT gamma-ray burst monitor concept

Content Provider	IEEE Xplore Digital Library
Author	da Silva, R.M.C. Caroli, E. Stephen, J.B. Mendes, N.F.C. Frontera, F. Auricchio, N. Amati, L.
Copyright Year	1963
Abstract	In astrophysics, hard X- and soft gamma-ray polarimetry has had limited development. To date, no dedicated polarimeters have ever been launched into space. However, previous Monte Carlo simulations and prototype experimental studies have been carried out by the authors in order to evaluate the polarimetric performance of pixelised CZT matrices. We have applied this Monte Carlo code to the case of a CZT pixel instrument proposed as a Gamma-ray burst monitor (GRBM) for an X-ray payload on board the International Space Station (ISS): the LOBSTER experiment, which has already successfully passed the ESA Phase A study for a future flight in 2009. Herein we present the results of the study of the 4 detection units that compose the GRBM detector. Each of these units is a 24times12 matrix of CZT elementary crystals and the pixels have a cross section of 8times8 mm², giving an active area of about 184 cm² for each unit. The detector thickness is nominally 3 mm, with a maximum of 5 mm should this thickness be crucial to exploit the GRBM as a polarimeter. The 4 detection units have a rectangular FOV of 55degtimes 35deg FWHM and their axes are misaligned with each other by 45deg in the direction perpendicular to the ISS motion and 10deg along the ISS direction of motion. The GRBM will operate in the energy range between 3 keV and 300 keV. The energy dependent polarimetric Q factor and detection efficiencies are presented and the expected minimum detectable polarization for gamma ray bursts is discussed
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	383
Ending Page	388
Page Count	6
File Size	430424
File Format	PDF
ISSN	00189499
Volume Number	53
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gamma ray bursts Monitoring Gamma ray detection Gamma ray detectors Astrophysics Polarimetry Virtual prototyping Monte Carlo methods Instruments Payloads simulation software Gamma-ray astronomy detectors polarimetry semiconductor radiation detectors
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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