Year: 2017
Type: article
Abstract: We describe the design, fabrication, and validation of a cryogenically compatible quasioptical thermal source for characterization of detector arrays. The source is constructed using a graphite-loaded epoxy mixture that is molded into a tiled pyramidal structure. The mold is fabricated using a hardened steel template produced via a wire electron discharge machining process. The absorptive mixture is bonded to a copper backplate enabling thermalization of the entire structure and measurement of the source temperature. Measurements indicate that the reflectance of the source is <0.001 across a spectral band extending from 75 to 330 GHz.
Source: Review of Scientific Instruments
DOI: 10.1063/1.4996751
Authors: David T. Chuss, Karwan Rostem, Edward J. Wollack, Leah Berman, Felipe Colazo, Martin DeGeorge, Kyle Helson, Marco Sagliocca
Institutions: Villanova University, Goddard Space Flight Center
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2738580655