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Search Publications by: Jonathan Dean (IntlAssoc)

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Displaying 1 - 4 of 4

Charge Exchange Experiments in a mini-Electron Beam Ion Trap using Transition Edge Sensors

April 8, 2026
Author(s)
Adrika Dasgupta, Jonathan Dean, Galen O'Neil, Nathan Nakamura, Joel Weber, Kelsey Morgan, Yuri Ralchenko, Daniel Swetz, Joseph Tan, Noah Zuckman, Fabian Fritz Kislat
Charge exchange is a process observed in astrophysical environments where highly charged ions interact with neutral atoms or molecules, capturing electrons and emitting X-rays as the excited states decay towards the ground state. Charge exchange-induced X

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
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