Design and tests of the hard x-ray polarimeter X-Calibur

M. G. Beilicke; M. Baring; S. Barthelmy; W. R. Binns; J. Buckley; R. Cowsik; P. Dowkontt; A. Garson; Q. Guo; Y. Haba; M. H. Israel; F. Kislat; H. Kunieda; K. Lee; J. Martin; H. Matsumoto; T. Miyazawa; T. Okajima; J. Schnittman; K. Tamura; J. Tueller; H. Krawczynski

doi:10.1117/12.929292

24 October 2012 Design and tests of the hard x-ray polarimeter X-Calibur

M. G. Beilicke, M. Baring, S. Barthelmy, W. R. Binns, J. Buckley, R. Cowsik, P. Dowkontt, A. Garson, Q. Guo, Y. Haba, M. H. Israel, F. Kislat, H. Kunieda, K. Lee, J. Martin, H. Matsumoto, T. Miyazawa, T. Okajima, J. Schnittman, K. Tamura, J. Tueller, H. Krawczynski

Author Affiliations +

Proceedings Volume 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV; 85071D (2012) https://doi.org/10.1117/12.929292
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

X-ray polarimetry promises to give qualitatively new information about high-energy astrophysical sources, such as binary black hole systems, micro-quasars, active galactic nuclei, and gamma-ray bursts. We designed, built and tested a hard X-ray polarimeter, X-Calibur, to be used in the focal plane of the InFOCμS grazing incidence hard X-ray telescope. X-Calibur combines a low-Z Compton scatterer with a CZT detector assembly to measure the polarization of 20−60 keV X-rays making use of the fact that polarized photons Compton scatter preferentially perpendicular to the electric field orientation; in principal, a similar space-borne experiment could be operated in the 5 − 100 keV regime. X-Calibur achieves a high detection efficiency of order unity.

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M. G. Beilicke, M. Baring, S. Barthelmy, W. R. Binns, J. Buckley, R. Cowsik, P. Dowkontt, A. Garson, Q. Guo, Y. Haba, M. H. Israel, F. Kislat, H. Kunieda, K. Lee, J. Martin, H. Matsumoto, T. Miyazawa, T. Okajima, J. Schnittman, K. Tamura, J. Tueller, and H. Krawczynski "Design and tests of the hard x-ray polarimeter X-Calibur", Proc. SPIE 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV, 85071D (24 October 2012); https://doi.org/10.1117/12.929292

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KEYWORDS

Polarimetry

Sensors

Polarization

X-rays

Photons

Hard x-rays

Scintillators

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