Other
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..823.1726l&link_type=abstract
ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference - CEC. AIP Conference Proceedings, Volu
Other
Cryogenics, Refrigerators, Low-Temperature Detectors, And Other Low-Temperature Equipment
Scientific paper
The Radio Astronomy Laboratory of the University of California, Berkeley is developing a 1 W at 80 K pulse tube refrigerator driven by a clearance seal linear compressor for use on the Allen Telescope Array. Second generation refrigerators show improved performance compared to the first generation, now achieving cooling power fairly close to model predictions. Compressors for the second-generation refrigerators are compact, electron-beam welded packages. One refrigerator was operated for 3070 hours, giving steady performance. For the third generation refrigerators we are hoping to better understand performance variations from one unit to another and to further improve the performance. Third generation units will have the reservoir integrated into the compressor and incorporate changes aimed at easier manufacturing.
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