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Instrument Performance and Simulation Verification of the POLAR Detector

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arxiv 1708.00664 v1 pith:LNXNHNAC submitted 2017-08-02 astro-ph.IM physics.ins-det

Instrument Performance and Simulation Verification of the POLAR Detector

M. Kole , Z.H. Li , N. Produit , T. Tymieniecka , J. Zhang , A. Zwolinska , T.W. Bao , T. Bernasconi
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F. Cadoux M.Z. Feng N. Gauvin W. Hajdas S.W. Kong H.C. Li L. Li X. Liu R. Marcinkowski S. Orsi M. Pohl D. Rybka J.C. Sun L.M. Song J. Szabelski R.J. Wang Y.H. Wang X. Wen B.B. Wu X. Wu H.L. Xiao L. Zhang L.Y. Zhang S.N. Zhang X.F. Zhang Y.J. Zhang Y. Zhao
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classification astro-ph.IM physics.ins-det
keywords instrumentpolarizationperformancepolarwillbeamdetectormeasure
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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POLAR is a new satellite-born detector aiming to measure the polarization of an unprecedented number of Gamma-Ray Bursts in the 50-500 keV energy range. The instrument, launched on-board the Tiangong-2 Chinese Space lab on the 15th of September 2016, is designed to measure the polarization of the hard X-ray flux by measuring the distribution of the azimuthal scattering angles of the incoming photons. A detailed understanding of the polarimeter and specifically of the systematic effects induced by the instrument's non-uniformity are required for this purpose. In order to study the instrument's response to polarization, POLAR underwent a beam test at the European Synchrotron Radiation Facility in France. In this paper both the beam test and the instrument performance will be described. This is followed by an overview of the Monte Carlo simulation tools developed for the instrument. Finally a comparison of the measured and simulated instrument performance will be provided and the instrument response to polarization will be presented.

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