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Title: Design of a Multi-Channel Ultra-High Resolution Superconducting Gamma-Ray Spectrometer

Abstract

Superconducting Gamma-ray microcalorimeters operated at temperatures around {approx}0.1 K offer an order of magnitude improvement in energy resolution over conventional high-purity Germanium spectrometers. The calorimeters consist of a {approx}1 mm{sup 3} 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.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15014718
Report Number(s):
UCRL-CONF-208296
TRN: US200807%%792
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: SPIE (The International Society for Optical Engineering) 49th Annual Meeting 2004, Denver, CO, United States, Aug 02 - Aug 06, 2004
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUMM MECHANICS, GENERAL PHYSICS; ADIABATIC DEMAGNETIZATION; CALORIMETERS; DESIGN; ENERGY RESOLUTION; GERMANIUM; PERFORMANCE; PROLIFERATION; REFRIGERATORS; RESOLUTION; SENSITIVITY; SPECTROMETERS; THERMISTORS

Citation Formats

Friedrich, S, Terracol, S F, Miyazaki, T, Drury, O B, Ali, Z A, Cunningham, M F, Niedermayr, T R, Barbee Jr., T W, Batteux, J D, and Labov, S E. Design of a Multi-Channel Ultra-High Resolution Superconducting Gamma-Ray Spectrometer. United States: N. p., 2004. Web.
Friedrich, S, Terracol, S F, Miyazaki, T, Drury, O B, Ali, Z A, Cunningham, M F, Niedermayr, T R, Barbee Jr., T W, Batteux, J D, & Labov, S E. Design of a Multi-Channel Ultra-High Resolution Superconducting Gamma-Ray Spectrometer. United States.
Friedrich, S, Terracol, S F, Miyazaki, T, Drury, O B, Ali, Z A, Cunningham, M F, Niedermayr, T R, Barbee Jr., T W, Batteux, J D, and Labov, S E. Mon . "Design of a Multi-Channel Ultra-High Resolution Superconducting Gamma-Ray Spectrometer". United States. doi:. https://www.osti.gov/servlets/purl/15014718.
@article{osti_15014718,
title = {Design of a Multi-Channel Ultra-High Resolution Superconducting Gamma-Ray Spectrometer},
author = {Friedrich, S and Terracol, S F and Miyazaki, T and Drury, O B and Ali, Z A and Cunningham, M F and Niedermayr, T R and Barbee Jr., T W and Batteux, J D and Labov, S E},
abstractNote = {Superconducting Gamma-ray microcalorimeters operated at temperatures around {approx}0.1 K offer an order of magnitude improvement in energy resolution over conventional high-purity Germanium spectrometers. The calorimeters consist of a {approx}1 mm{sup 3} 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Nov 29 00:00:00 EST 2004},
month = {Mon Nov 29 00:00:00 EST 2004}
}

Conference:
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