Share Email Print
cover

Proceedings Paper

Design of a multichannel ultra-high-resolution superconducting gamma-ray spectrometer
Author(s): Stephan F. Friedrich; Stephane F. Terracol; Toshiyuki Miyazaki; Owen B. Drury; Zaheer A. Ali; Mark F. Cunningham; Thomas R. Niedermayr; Troy W. Barbee Jr.; Jan D. Batteux; Simon E. Labov
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Superconducting Gamma-ray microcalorimeters operated at temperatures around ~0.1 K offer an order of magnitude improvement in energy resolution over conventional high-purity Germanium spectrometers. The calorimeters consist of a ~1 mm3 superconducting or insulating absorber and a sensitive thermistor, which are weakly coupled to a cold bath. Gamma-ray capture increases the absorber temperature in proportion to the Gamma-ray energy, this is measured by the thermistor, and both subsequently cool back down to the base temperature through the weak link. We are developing ultra-high-resolution Gamma-ray spectrometers based on Sn absorbers and superconducting Mo/Cu multilayer thermistors for nuclear non-proliferation applications. They have achieved an energy resolution between 60 and 90 eV for Gamma-rays up to 100 keV. We also build two-stage adiabatic demagnetization refrigerators for user-friendly detector operation at 0.1 K. We present recent results on the performance of single pixel Gamma-ray spectrometers, and discuss the design of a large detector array for increased sensitivity.

Paper Details

Date Published: 21 October 2004
PDF: 9 pages
Proc. SPIE 5540, Hard X-Ray and Gamma-Ray Detector Physics VI, (21 October 2004); doi: 10.1117/12.563624
Show Author Affiliations
Stephan F. Friedrich, Lawrence Livermore National Lab. (United States)
Stephane F. Terracol, Lawrence Livermore National Lab. (United States)
Toshiyuki Miyazaki, Lawrence Livermore National Lab. (United States)
Owen B. Drury, Lawrence Livermore National Lab. (United States)
Zaheer A. Ali, Lawrence Livermore National Lab. (United States)
Mark F. Cunningham, Lawrence Livermore National Lab. (United States)
Thomas R. Niedermayr, Lawrence Livermore National Lab. (United States)
Troy W. Barbee Jr., Lawrence Livermore National Lab. (United States)
Jan D. Batteux, Lawrence Livermore National Lab. (United States)
Simon E. Labov, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 5540:
Hard X-Ray and Gamma-Ray Detector Physics VI
Arnold Burger; Ralph B. James; Larry A. Franks, Editor(s)

© SPIE. Terms of Use
Back to Top