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

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

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

X-ray polarimetry will give qualitatively new information about high-energy astrophysical sources. 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 10-80 keV X-rays making use of the fact that polarized photons Compton scatter preferentially perpendicular to the electric field orientation. X-Calibur achieves a high detection efficiency of order unity.

Keywords

  • Black hole
  • InFOCμS
  • Polarization
  • X-Calibur
  • X-rays

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