2017/03/13 by X. F. Zhang, W. Hajdas, Zhang, X. F. +92
Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Nuclear Physics and Applications #Particle Detector Development and Performance #Radiation Detection and Scintillator Technologies #astro-ph.IM #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1703.04210
There still some disagreement about one of the conclusions presented in the paper among all the authors
openalex publication_date 2017/03/13 · arxiv created 2017/03/15 · arxiv updated 2017/03/16 · openalex created_date 2017/04/28 · openalex updated_date 2026/07/28
As a space-borne detector POLAR is designed to conduct hard X-ray polarization measurements of gamma-ray bursts on the statistically significant sample of events and with an unprecedented accuracy. During its development phase a number of tests, calibrations runs and verification measurements were carried out in order to validate instrument functionality and optimize operational parameters. In this article we present results on gain optimization togeter with verification data obtained in the course of broad laboratory and environmental tests. In particular we focus on exposures to the 137Cs radioactive source and determination of the gain dependence on the high voltage for all 1600 detection channels of the polarimeter. Performance of the instrument is described in detail with respect to the dynamic range, energy resolution and temperature dependence. Gain optimization algorithms and response non-uniformity studies are also broadly discussed. Results presented below constitute important parts for development of the POLAR calibration and operation database.