29 August 2017 On-ground characterization of the IXPE polarization angle knowledge
Author Affiliations +
The Imaging X-ray Polarimetry Explorer (IXPE) has been recently selected for development as part of NASA's Small Explorer program (SMEX), with a launch date in 2021. Developed in a collaboration between NASA and the Italian Space Agency (ASI), IXPE will perform groundbreaking measurements of imaging polarization in X-rays for a number of different classes of sources including isolated and accreting neutron stars, pulsar wind nebulae, stellar and supermassive black holes. Combining 30 arcsec (HPD) grazing-incidence X-ray optics with the polarization-sensitive Gas Pixel Detectors (GPDs), IXPE will provide two-orders of magnitude improvement in sensitivity over the past flown instruments. The IXPE requested precision on the measurement of the polarization angle (better than 0.2 degrees at instrument level) poses strict constraints on the detector unit (DU) mechanical design and requires the implementation of a specific alignment and measurement strategy to meet the scientific requirements. In this paper we describe the design solutions that will be implemented in the DU flight models as well as a step-by-step metrology procedure that will ensure the fulfillment of the scientific requirement.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Y. Evangelista, Y. Evangelista, } "On-ground characterization of the IXPE polarization angle knowledge", Proc. SPIE 10397, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX, 103971H (29 August 2017); doi: 10.1117/12.2275235; https://doi.org/10.1117/12.2275235


Performance of the Gas Pixel Detector an x ray...
Proceedings of SPIE (July 18 2016)
The on board calibration system of the X ray Imaging...
Proceedings of SPIE (July 18 2016)
Calibrating the IXPE observatory from ground to space
Proceedings of SPIE (August 29 2017)
IXPE the Imaging X-ray Polarimetry Explorer
Proceedings of SPIE (August 29 2017)
X-ray polarimeter with a multilayer-coated CCD
Proceedings of SPIE (June 15 2006)

Back to Top