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Cold cables for “dry” cryostats

PTBnews 1.2019
Especially interesting for

providers of equipment for cryogenic technologies such as woven ribbon cables

manufacturers of cryostats

1: The clamping device for flat ribbon cables, which features an adjustable channel height, is pressed together by means of screwed joints and can also be stacked. 2: Round cables are fixed inside the second cable clamp by means of several spring elements.

Modern low-temperature systems increasingly make use of “dry” cryostats whose cooling effect is reached in vacuum solely by direct thermal contact. However, cables and electric wiring may impede the cooling process if they are not coupled thermally at suitable locations between room temperature and operating temperature. At PTB, two new designs have therefore been developed to thermally couple round cables and flat ribbon cables. The heat flow, which propagates through the supply lines to a sensor, can thus be minimized. This is particularly helpful at a temperature below 4 K. (Technology Offers 473 & 483)


low thermal impedance for varying cable sizes

can easily be integrated into existing cryostats

connections are easily disengaged

Contact person for questions about technology transfer

Andreas Barthel, Phone: +49 531 592-8307, Opens window for sending emailandreas.barthel(at)ptb.de, Opens internal link in current windowwww.technologietransfer.ptb.de/en