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Search Publications by: Avirup Roy (IntlAssoc)

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Displaying 1 - 4 of 4

A study of the position-dependent response of thermal kinetic inductance detectors through the use of cryogenic beam steering

April 2, 2026
Author(s)
Ian Fogarty Florang, Jonathan Dean, Joseph Fowler, Tom-Erik Haugen, Shannon Hoogerheide, Daniel Jardin, Hans Mumm, Nathan Nakamura, Matthew Natale, Galen O'Neil, Nathan Ortiz, Jeremy Paster, Thomas Rao, Avirup Roy, Daniel Swetz, Joel Ullom, Michael Vissers, Paul Szypryt
There are a number of considerations when designing a low-temperature detector for the best possible energy resolution. One that has been particularly challenging for thermal kinetic inductance detectors (TKIDs) is ensuring that the detector's response to

Addressing Individual Persistent Current Switches With a Cryogenic Optical Scanner

March 6, 2026
Author(s)
Avirup Roy, Jonathan Dean, Galen O'Neil, Nathan Ortiz, Paul Szypryt
We demonstrate a robust and minimalist implementation of individually addressable optically actuated persistent current switches. We use a focused laser beam directed by a cryogenic laser scanner to drive a selected segment of a superconducting loop normal

A laser scanning device for cryogenic beam steering

March 2, 2026
Author(s)
Jonathan Dean, Avirup Roy, Nathan Ortiz, Joel Weber, Joel Ullom, Daniel Swetz, Galen O'Neil
It is often desirable to steer light within a cryostat and have a well focussed laser spot incident upon a detector. We demonstrate operation of superconducting transition-edge sensor microcalorimeters with a laser scanning device co-located on the 20 mK

Characterization of Silicon-Membrane TES Microcalorimeters for Large-Format X-ray Spectrometers with Integrated Microwave SQUID Readout

January 16, 2026
Author(s)
Avirup Roy, Robinjeet Singh, Joel Weber, William Doriese, Johnathon Gard, Mark Keller, John Mates, Kelsey Morgan, Galen O'Neil, Nathan Ortiz, Daniel Swetz, Daniel Schmidt, Joel Ullom, Evan Jahrman, Thomas Allison, Sasawat Jamnuch, John Vinson, Charles Titus, Cherno Jaye, Daniel Fischer
We present the electrothermal characterization of transition-edge sensor (TES) detectors suspended on Si membranes fabricated using a silicon-on-insulator wafer. The use of an all-silicon fabrication platform, in contrast to the more commonly used silicon
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