A new type of carbon resistance thermometer with excellent thermal contact at millikelvin temperatures

TL;DR

This paper introduces a novel carbon resistor-based cryogenic thermometer with exceptional thermal contact at millikelvin temperatures, demonstrating high sensitivity and low RF heating interference.

Contribution

It presents a new type of carbon resistance thermometer with improved thermal contact and calibration at millikelvin temperatures, using commercially available components.

Findings

Calibrated down to 5mK using a quartz tuning fork He-3 viscometer

Exhibits superior thermal contact and insensitivity to RF heating

Measured thermal resistance and response time at millikelvin range

Abstract

Using a new brand of commercially available carbon resistor we built a cryogenic thermometer with an extremely good thermal contact to its thermal environment. Because of its superior thermal contact the thermometer is insensitive to low levels of spurious radio frequency heating. We calibrated our thermometer down to 5mK using a quartz tuning fork He-3 viscometer and measured its thermal resistance and thermal response time.