Publication Date:
2019-08-27
Description:
An account is given of the design features, construction, and performance of a both mechanically and thermally robust, resonant cryogenic chopper operating at 4.2 K. The chopper can occult a 2.54-cm aperture at 4.5 Hz, with approximately 1-mW dissipation. The controllability of the stator and rotor magnetic fields facilitates performance optimization and the determination of any possible interference effects. Attention is given to long-term amplitude stability determinations.
Keywords:
MECHANICAL ENGINEERING
Type:
Applied Optics (ISSN 0003-6935); 31; 95-100
Format:
text
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