Gamma-Ray Spectrometers Using Superconducting Transition Edge Sensors with External Active Feedback Bias

Conference · Fri Sep 22 00:00:00 EDT 2000

DOI:https://doi.org/10.1109/77.919452· OSTI ID:793951

Chow, D T; van den Berg, M L; Loshak, A; Frank, M; Barbee, T W; Labov, S E

The authors are developing x-ray and gamma-ray spectrometers with high absorption efficiency and high energy-resolution for x-ray and gamma-ray spectroscopy. They are microcalorimeters consisting of a bulk Sn absorber coupled to a Mo/Cu multilayer superconducting transition edge sensor (TES). The authors have measured an energy resolution of 70 eV FWHM for 60 keV incident gamma-rays using electrothermal feedback. They have also operated these microcalorimeters with an external active feedback bias to linearize the detector response, improve the count rate performance, and extend the detection energy range. They present x-ray and gamma-ray results operation of this detector design in both bias modes.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Office of Defense Programs (DP) (US)
• DOE Contract Number: W-7405-Eng-48
• OSTI ID: 793951
• Report Number(s): UCRL-JC-137822; TRN: US200302%%681
• Resource Relation: Journal Volume: 11; Journal Issue: 1; Conference: Applied Superconductivity Conference 2000, Virginia Beach, VA (US), 09/17/2000--09/22/2000; Other Information: PBD: 22 Sep 2000
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
DESIGN
DETECTION
EFFICIENCY
ENERGY RANGE
ENERGY RESOLUTION
FEEDBACK
PERFORMANCE
SPECTROMETERS
SPECTROSCOPY
SUPERCONDUCTIVITY