Abstract
Superconducting particle detectors are promising for Time-Of-Flight Mass Spectrometry of large molecules. The operating temperature of detectors is 0.3 K. To realize fast read-out and no-crosstalk, coaxial cables made of low-thermal conductivity alloys are needed between 0.3 K and room temperature. As the thermal conductivity of alloys used at low temperature is reported to differ by mechanical treatments, processed cables have to be measured. Wemeasured thermal conductivity of thin processed cables between 0.3 and 4.5 K, and observed a difference of 40% from literature in measurements of 70—30 CuNi. From present results,we realized implementation of cryogenic wiring between a large-scale array detector, which is placed on a cold stage at 0.3 K, and electronics at room temperature. I—V characteristics and signals from superconducting detectors were successfully observed.
