SQUID Based W-Al Quasiparticle Trapping Assisted Transition Edge Sensor

Authors

S. W. Nam
Blas Cabrera
B. Chugg
R. M. Clarke
C. Fertig
K. D. Irwin
Betty A. Young, Santa Clara UniversityFollow

Document Type

Conference Proceeding

Publication Date

2-12-1996

Publisher

Elsevier

Abstract

We have demonstrated a new type of phonon sensor for cryogenic particle detectors with a high-bandwidth SQUID readout. Our Quasiparticle trapping assisted Electrothermal feedback Transition edge sensor (QET) utilizes aluminum quasiparticle traps attached to a tungsten superconducting transition edge sensor patterned on a silicon substrate. The tungsten lines are voltage biased and self-regulate in the transition region. We have tested three versions of these detectors. One detector consisted of four QET sensors patterned on the surface of a 1 cm × 1 cm × 1 mm silicon substrate. With this detector, we have shown an energy resolution of ∼400 eV FWHM and position sensitivity of ∼0.3 mm for 6 keV X-rays from an ⁵⁵Fe source. We tested a second detector identical to the first but with the addition of an ionization sensor. With information from the ionization channel, we were able to distinguish electron-recoil events from nuclear-recoil events. Most recently, we have tested a 2 cm × 2 cm × 2 mm detector with four QET sensors.

Comments

In the proceedings of the Sixth International Workshop on Low Temperature Detectors (LTD-6)

Recommended Citation

Nam, S. W., Cabrera, B., Chugg, B., Clarke, R. M., Fertig, C., Irwin, K. D., & Young, B. A. (1996). SQUID based W-Al quasiparticle trapping assisted transition edge sensor. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 370(1), 187–189. https://doi.org/10.1016/0168-9002(95)01083-1