Superconducting Detectors (MKIDs)
Microwave Kinetic Inductance Detectors (MKIDs), a relatively are new and promising type of superconducting photon detector. They were conceived at Caltech/JPL in Jonas Zmuidzinas' Group. The basic idea is that incoming photons are absorbed in a superconductor which breaks Coopers ("quasiparticles"). The quasiparticles cause a surface inductance change. The absorber is constructed to be part of a high-Q resonating LC circuit; the density of quasiparticles can be detected as a phase shift and amplitude change in a microwave probe signal transmitted past the circuit. The density of quasiparticles is proportional to the energy of the incoming photon. At APS, we have begun to develop MKIDs for synchrotron applications.
MKIDs at Argonne
We are developing energy-dispersive detectors using superconducting resonators (MKIDs) which can be heavily multiplexed. Our goal is energy resolution <10eV.
Center for Nanoscale Materials Users Meeting, 2009:
CNM Poster 2009
Technology and Instrumentation in Particle Physics, June 2011:
TIPP 2011 Poster
14th International Workshop on Low Temperature Detectors, August 2011: Coming Soon!
Tungsten silicide films for Microwave Kinetic Inductance Detectors, Applied Physics Letters 101, 032601 (2012).