We are developing energy-dispersive x-ray detectors using superconducting circuits. Specifically, we are working on microwave kinetic inductance detectors and transition edge sensor microcalorimeters. The later is in collaboration with groups at NIST and SLAC. We work closely with the staff at Argonne’s Center for Nanoscale Materials cleanroom facility.

The core APS members include: Lisa Gades, Tim Madden, Nino Miceli, Umesh Patel, Orlando Quaranta, Daikang Yan (NU).

• Eliminating the non-Gaussian spectral response of X-ray absorbers for transition-edge sensors, Appl. Phys. Lett. (2017)
• Development of ROACH firmware for microwave multiplexed X-ray TES microcalorimeters, ASC 2016
• Development of Thick Electroplated Bismuth Absorbers for Large Collection Area Hard X-ray Transition Edge Sensors, ASC 2016
• Tuning the Transition Temperature of WSi_x  Alloys for Use in Cryogenic Microcalorimeters, Journal of Low Temperature Physics (2016)
• Processing of X-ray Microcalorimeter Data with Pulse Shape Variation using Principal Component Analysis, Journal of Low Temperature Physics (2016)
• Optimization of thermal kinetic inductance detectors for x-ray spectroscopy, Applied Superconductivity, IEEE Transactions on , vol.25, no.3, pp.1,5, June 2015
• X-ray photon detection using superconducting resonators in thermal quasi-equilibrium, Superconductor Science and Technology 26, 105021 (2013) (The first ever MKID microcalorimeter (US Patent 9,523,777)
• Towards x-ray thermal kinetic inductance detectors, Journal of Low Temperature Physics: Volume 176, Issue 3 (2014), Page 497-503 (LTD-14)
• Mitigation of position dependence in x-rays absorbers for thermal kinetic inductance detectors, Journal of Physics: Conference Series 507 (2014) 042033.
• Tungsten silicide alloys for microwave kinetic inductance detectors, IEEE Transactions on Applied Superconductivity, Vol. 23, No. 3, June 2013
• Tungsten silicide films for microwave kinetic inductance detectors, Applied Physics Letters 101, 032601 (2012)