Thermal conductance measurements of bolted copper joints for SuperCDMS

Journal Article · Tue Sep 01 00:00:00 EDT 2015 · Cryogenics, 70:41-46

DOI:https://doi.org/10.1016/j.cryogenics.2015.04.006· OSTI ID:1213007

Schmitt, R.; Tatkowski, Greg; Ruschman, M.; Golwala, S. R.; Kellaris, N.; Daal, M.; Hall, Jeter C.; Hoppe, Eric W.

Joint thermal conductance testing has been undertaken for bolted copper to copper connections from 60 mK to 26 K. This testing was performed to validate an initial design basis for the SuperCDMS experiment, where a dilution refrigerator will be coupled to a cryostat via multiple bolted connections. Copper used during testing was either gold plated or passivated with citric acid to prevent surface oxidation. Results obtained are well fit by a power law regression of joint thermal conductance to temperature and match well with data collected during a literature review.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1213007
• Report Number(s): PNNL-SA-110966
• Journal Information: Cryogenics, 70:41-46, Journal Name: Cryogenics, 70:41-46
• Country of Publication: United States
• Language: English