Large Area TES Chip with 40meV Resolution

23 Jul 2019, 17:45
1h 15m
Piazza Città di Lombardia (Milano)

Piazza Città di Lombardia

Milano

Piazza Città di Lombardia, 1, 20124 Milano MI
Poster Low Temperature Detector Development and Physics Poster session

Speaker

Mr Caleb Fink (University of California Berkeley)

Description

Future low mass Dark Matter searches will require sensitivity to single optical phonons, corresponding to thresholds of about 100meV. This motivates the design of sensors with relatively large areas, and excellent energy resolution.

In this talk I will discuss the performance of a $100\mu\mathrm{m}\times 400\mu\mathrm{m}$ Tungsten Transition Edge Sensor (TES) with a $T_c$ of 40mK. This device has a measured Noise eqivalent power (NEP) of $1.5\times 10^{-18}\mathrm{W}/\sqrt{\mathrm{Hz}}$, and a bandwidth of $2.6$kHz, suggesting a resolution of a dirac delta energy deposit of 40meV. This energy resolution is comparable to world leading Microwave Kinetic Inductance Detectors (MKIDs) and TES based optical photon sensors, but with a device of much larger size.

Less than 5 years of experience since completion of Ph.D Y
Student (Ph.D., M.Sc. or B.Sc.) Y

Primary author

Mr Caleb Fink (University of California Berkeley)

Co-authors

Prof. Matt Pyle (University of California, Berkeley) Bernard Sadoulet (University of California at Berkeley) Dr Bruno Serfass (UC Berkeley) Mr Samuel Watkins (University of California, Berkeley) Dr William Page (University of California, Berkeley) Dr Paul Brink (SLAC) Dr Richard Partridge (SLAC) Mr Suhas Ganjam (University of California Berkeley) Dr Tsuguo Aramaki (SLAC) Dr Rupak Mahapatra (Texas A&M) Dr Nader Mirabolfathi (Texas A&M) Mark Platt (Texas A&M)

Presentation Materials