Sub-kelvin thermal conductivity and radioactivity of some useful materials in low background cryogenic experiments

N. Kellaris, M. Daal, M. Epland, M. Pepin, O. Kamaev, P. Cushman, E. Kramer, B. Sadoulet, N. Mirabolfathi, S. Golwala, M. Runyan

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We present measurements of the thermal conductivity between 0.05 and 1 K, and radioactive contamination levels, for some thermally isolating materials. TIMET Ti 15-3-3-3, Mersen grade 2020 graphite, Vespel SP-1, Vespel SP-22, Vespel SCP-5000, Vespel SCP-5050, Graphlite CFRP, and a Kapton/epoxy composite are all investigated. Thermal conductivities were measured using a single-heater longitudinal heat flow method. Material radioactivity was determined for the materials at a low background counting facility using a high-purity gamma detector and GEANT4 Monte Carlo simulations.

Original languageEnglish (US)
Pages (from-to)201-208
Number of pages8
JournalJournal of Low Temperature Physics
Volume176
Issue number3-4
DOIs
StatePublished - Aug 2014

Keywords

  • Graphite
  • Kapton
  • Radioactivity
  • Thermal Conductivity
  • Ti 15-3-3-3
  • Vespel

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