Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: S1.00254 : Development of semi-rigid coaxial cables for application to low temperature experiments
Author:
Fast signal readout with low noise is essential for spectrometric research.
Superconducting spectrometers operating below $\sim $1K are promising with
their high spectral resolution, detection efficiency and counting rate.
Cables connecting these spectrometers and electronics at high temperature
must be coaxial and have low thermal conductance in order to reduce heat
into low temperature.
We have developed thin semi-rigid coaxial cables using low thermal
conductivity alloys, CuNi, SUS and NbTi, for both center and outer
conductors. The outer conductor is seamless and separated from the center
conductor by a PTFE electrical insulator. We have assembled an adiabatic
demagnetization refrigerator (ADR) at the 2nd stage of a GM cryocooler,
which enables to cool the coaxial cables below 1K, and have measured low
thermal conductance and performance of the cables at high frequencies up to
$\sim $5 GHz.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.S1.254
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