Compact Low-power Cryo-Cooling Systems for Superconducting Elements
a superconducting element, low-power technology, applied in the direction of gas cycle refrigeration machines, refrigeration machines, lighting and heating apparatus, etc., can solve the problem of lower thermodynamic efficiency than those coolers, and achieve the effect of minimizing the effect of secondary flows
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[0019]FIG. 1 is a schematic block diagram of the present cooler system 100. System 100 is a compact cooler having a form factor and low power draw of a standard rack-mountable electronics instrument. The cooler is a pulse tube / Joule-Thomson (PT / JT) hybrid, with the JT stage 160 achieving 1.4 mW of cooling at 1.7 K or 2.2K (depending on the configuration, see FIGS. 2A and 2B), and the three-stage 132, 134, 136 pulse tube 138 providing cooling at 80 K (132), 25 K (134), and 10 K (136).
[0020]System 100 comprises a cryo-cooler compressor 102 providing high-pressure gas out 106 and low-pressure gas in 108 and includes a filter 104. Pulse tube cooler 130 includes an 80K stage 132, a 25K stage 134, and a 10K stage 136 housed within vacuum shell 150. Also within vacuum shell 150 are thermal busbar 142, heat exchangers 122, 124, 126, and 118, as well as counterflow heat exchangers 110, 112, 114, and 116. Counterflow heat exchanger 116 and heat exchanger 118 are part of JT stage 160, as is JT...
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