Thermal conductance measurements of bolted copper joints for SuperCDMS

Schmitt, R. L.; Tatkowski, G.; Ruschman, M.; Golwala, S.; Kellaris, N.; Daal, M.; Hall, J.; Hoppe, E. W.

doi:10.1016/j.cryogenics.2015.04.006

Title: Thermal conductance measurements of bolted copper joints for SuperCDMS

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Abstract

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. Finally, the results we 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.

Authors:

Schmitt, R. L. ^[1]; Tatkowski, G. ^[1]; Ruschman, M. ^[1]; Golwala, S. ^[2]; Kellaris, N. ^[3]; Daal, M. ^[3]; Hall, J. ^[4]; Hoppe, E. W. ^[4]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
California Inst. of Technology (CalTech), Pasadena, CA (United States)
Univ. of California, Berkeley, CA (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Publication Date:: Tue Apr 28 00:00:00 EDT 2015

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Org.:: SuperCDMS

OSTI Identifier:: 1253011

Alternate Identifier(s):: OSTI ID: 1372953

Report Number(s):: FERMILAB-PUB-14-522-PPD
Journal ID: ISSN 0011-2275; 1402733

Grant/Contract Number:: AC02-07CH11359; De-AC02-07CH11359; FERMILAB-PUB-14-522-PPD

Resource Type:: Accepted Manuscript

Journal Name:: Cryogenics

Additional Journal Information:: Journal Volume: 70; Journal ID: ISSN 0011-2275

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; Joint conductance; Contact; Bolt; Copper; Boundary resistance

Citation Formats


                    Schmitt, R. L., Tatkowski, G., Ruschman, M., Golwala, S., Kellaris, N., Daal, M., Hall, J., and Hoppe, E. W. Thermal conductance measurements of bolted copper joints for SuperCDMS.  United States: N. p., 2015. 
Web.  doi:10.1016/j.cryogenics.2015.04.006.

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                    Schmitt, R. L., Tatkowski, G., Ruschman, M., Golwala, S., Kellaris, N., Daal, M., Hall, J., & Hoppe, E. W. Thermal conductance measurements of bolted copper joints for SuperCDMS.  United States.  https://doi.org/10.1016/j.cryogenics.2015.04.006

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                    Schmitt, R. L., Tatkowski, G., Ruschman, M., Golwala, S., Kellaris, N., Daal, M., Hall, J., and Hoppe, E. W. Tue .  
"Thermal conductance measurements of bolted copper joints for SuperCDMS".  United States.  https://doi.org/10.1016/j.cryogenics.2015.04.006.  https://www.osti.gov/servlets/purl/1253011.

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@article{osti_1253011,

  title        = {Thermal conductance measurements of bolted copper joints for SuperCDMS},

  author       = {Schmitt, R. L. and Tatkowski, G. and Ruschman, M. and Golwala, S. and Kellaris, N. and Daal, M. and Hall, J. and Hoppe, E. W.},

  abstractNote = {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. Finally, the results we 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.},

  doi          = {10.1016/j.cryogenics.2015.04.006},

  journal      = {Cryogenics},

  number       = ,

  volume       = 70,

  place        = {United States},

  year         = {Tue Apr 28 00:00:00 EDT 2015},

  month        = {Tue Apr 28 00:00:00 EDT 2015}

}

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