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A Position Sensitive X-ray Spectrophotometer using Microwave Kinetic Inductance Detectors

Benjamin A. Mazin·Megan E. Eckart·Bruce Bumble·Sunil Golwala·Peter K. Day·Jonas Zmuidzinas·Fiona A. Harrison
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Abstract

The surface impedance of a superconductor changes when energy is absorbed and Cooper pairs are broken to produce single electron (quasiparticle) excitations. This change may be sensitively measured using a thin-film resonant circuit called a microwave kinetic inductance detector (MKID). The practical application of MKIDs for photon detection requires a method of efficiently coupling the photon energy to the MKID. We present results on position sensitive X-ray detectors made by using two aluminum MKIDs on either side of a tantalum photon absorber strip. Diffusion constants, recombination times, and energy resolution are reported. MKIDs can easily be scaled into large arrays.

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Benjamin A. Mazin, Megan E. Eckart, Bruce Bumble, Sunil Golwala, Peter K. Day, Jonas Zmuidzinas, Fiona A. Harrison. 2006-10-04. A Position Sensitive X-ray Spectrophotometer using Microwave Kinetic Inductance Detectors. https://doi.org/10.1063/1.2390664

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