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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 journal › Article › peer-review

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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