An Improved Design and Simplified Evaluation Technique for Waveguide Microcalorimeter

An improved design and simplified evaluation technique for waveguide microcalorimeter is presented in this paper. The design is based on a traditional twin-line microcalorimeter for calibrating thermistor mounts but with a proposed novel modification. In the improved design, another thermistor is added to measure the temperature change of the thermal isolation waveguide section. A simplified evaluation method is also proposed to minimize the S-parameter measurements for obtaining the effective efficiency of the mount. The measurement model and its detailed derivation are discussed. The capability of the improved design and proposed evaluation technique has been assessed through a recent consultative committee for electricity and magnetism key comparison.