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