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Ground calibration of the spatial response and quantum efficiency of the CdZnTe hard x-ray detectors for NuSTAR

Grefenstette, Brian W. and Bhalerao, Varun and Cook, W. Rick and Harrison, Fiona A. and Kitaguchi, Takao and Madsen, Kristin K. and Mao, Peter H. and Miyasaka, Hiromasa and Rana, Vikram (2017) Ground calibration of the spatial response and quantum efficiency of the CdZnTe hard x-ray detectors for NuSTAR. In: Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX. Proceedings of SPIE. No.10392. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 1039207. https://resolver.caltech.edu/CaltechAUTHORS:20180108-151123343

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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.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2271365DOIArticle
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10392/2271365/Ground-calibration-of-the-spatial-response-and-quantum-efficiency-of/10.1117/12.2271365.full?SSO=1PublisherArticle
ORCID:
AuthorORCID
Grefenstette, Brian W.0000-0002-1984-2932
Harrison, Fiona A.0000-0003-2992-8024
Madsen, Kristin K.0000-0003-1252-4891
Rana, Vikram0000-0003-1703-8796
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.
Group:NuSTAR, Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANNG08FD60C
NASA/JPL/CaltechUNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:10392
Record Number:CaltechAUTHORS:20180108-151123343
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180108-151123343
Official Citation:Brian W. Grefenstette, Varun Bhalerao, W. Rick Cook, Fiona A. Harrison, Takao Kitaguchi, Kristin K. Madsen, Peter H. Mao, Hiromasa Miyasaka, Vikram Rana, "Ground calibration of the spatial response and quantum efficiency of the CdZnTe hard x-ray detectors for NuSTAR", Proc. SPIE 10392, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX, 1039207 (29 August 2017); doi: 10.1117/12.2271365; http://dx.doi.org/10.1117/12.2271365
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84175
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Jan 2018 23:42
Last Modified:03 Oct 2019 19:15

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