Publikationsdatum:
2019-07-13
Beschreibung:
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 less than 0.001 across a spectral band extending from 75 to 330 gigahertz.
Schlagwort(e):
Engineering (General); Instrumentation and Photography
Materialart:
GSFC-E-DAA-TN51036
,
Review of Scientific Instruments (ISSN 0034-6748) (e-ISSN 1089-7623); 88; 10; 104501
Format:
text
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