Progress In Kinetic Inductance Thermometers For X-Ray Calorimeters

G. L. Rawley; R. L. Kelley; S. H. Moseley; A. E. Szymkowiak

doi:10.1117/12.962599

27 November 1989 Progress In Kinetic Inductance Thermometers For X-Ray Calorimeters

G. L. Rawley, R. L. Kelley, S. H. Moseley, A. E. Szymkowiak

Proceedings Volume 1159, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy and Atomic Physics; (1989) https://doi.org/10.1117/12.962599
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

Conventional X-ray microcalorimeters have so far used ion-implanted resistors for thermometers. Recently, however, several new methods for sensing small temperature changes have been suggested that are non-dissipative. Such devices may have intrinsically better energy resolution by eliminating the Johnson noise present in resistive devices. We are investigating the use of kinetic inductance thermometers for X-ray microcalorimeters. This technique exploits the strong temperature dependence of magnetic penetration depth of thin superconducting films. Our prototype system, designed for operation at 1.5 K, uses films of aluminum and tin. Once the expected temperature sensitivity and alpha particle detection have been demonstrated, we expect to replace the aluminum with titanium or another material with a suitable critical temperature and operate the device at 0.3 K. At this temperature the energy resolution from thermal noise should be sufficiently good to allow X-ray detection.

Citation Download Citation

G. L. Rawley, R. L. Kelley, S. H. Moseley, and A. E. Szymkowiak "Progress In Kinetic Inductance Thermometers For X-Ray Calorimeters", Proc. SPIE 1159, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy and Atomic Physics, (27 November 1989); https://doi.org/10.1117/12.962599

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