Published August 29, 2017
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Ground calibration of the spatial response and quantum efficiency of the CdZnTe hard x-ray detectors for NuSTAR
Abstract
Pixelated Cadmium Zinc Telluride (CdZnTe) detectors are currently flying on the Nuclear Spectroscopic Telescope ARray (NuSTAR) NASA Astrophysics Small Explorer. While the pixel pitch of the detectors is ≈ 605 μm, we can leverage the detector readout architecture to determine the interaction location of an individual photon to much higher spatial accuracy. The sub-pixel spatial location allows us to finely oversample the point spread function of the optics and reduces imaging artifacts due to pixelation. In this paper we demonstrate how the sub-pixel information is obtained, how the detectors were calibrated, and provide ground verification of the quantum efficiency of our Monte Carlo model of the detector response.
Additional Information
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration.Attached Files
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Additional details
- Eprint ID
- 84175
- Resolver ID
- CaltechAUTHORS:20180108-151123343
- NASA
- NNG08FD60C
- NASA/JPL/Caltech
- Created
-
2018-01-08Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field
- Caltech groups
- NuSTAR, Space Radiation Laboratory, Astronomy Department
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 10392