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Title: Performance of Tantalum STJ X-ray Detectors at Elevated Count Rates

Abstract

Here, we have developed an X-ray detector system based on Ta superconducting tunnel junctions (STJs) with an energy resolution below 10 eV under 1 keV. A principal advantage of STJs over other low-temperature detectors is their high count rate capability. In this work, we have optimized the operating conditions and digital pulse processing parameters for input count rates up to 25 kcps/pixel. Resolution below 10 eV is maintained up to 2.5 kcps/pixel, and at input rates of 25 kcps per pixel the resolution is 26 eV FWHM at 525 eV.

Authors:
ORCiD logo [1];  [2];  [2];  [1]
  1. STAR Cryoelectronics, Santa Fe, NM (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1544509
Report Number(s):
LLNL-JRNL-778830
Journal ID: ISSN 0022-2291; 973009
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Low Temperature Physics
Additional Journal Information:
Journal Volume: 194; Journal Issue: 1-2; Journal ID: ISSN 0022-2291
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Carpenter, M. H., Ponce, F., Friedrich, S., and Cantor, R. Performance of Tantalum STJ X-ray Detectors at Elevated Count Rates. United States: N. p., 2018. Web. doi:10.1007/s10909-018-2071-4.
Carpenter, M. H., Ponce, F., Friedrich, S., & Cantor, R. Performance of Tantalum STJ X-ray Detectors at Elevated Count Rates. United States. doi:10.1007/s10909-018-2071-4.
Carpenter, M. H., Ponce, F., Friedrich, S., and Cantor, R. Wed . "Performance of Tantalum STJ X-ray Detectors at Elevated Count Rates". United States. doi:10.1007/s10909-018-2071-4. https://www.osti.gov/servlets/purl/1544509.
@article{osti_1544509,
title = {Performance of Tantalum STJ X-ray Detectors at Elevated Count Rates},
author = {Carpenter, M. H. and Ponce, F. and Friedrich, S. and Cantor, R.},
abstractNote = {Here, we have developed an X-ray detector system based on Ta superconducting tunnel junctions (STJs) with an energy resolution below 10 eV under 1 keV. A principal advantage of STJs over other low-temperature detectors is their high count rate capability. In this work, we have optimized the operating conditions and digital pulse processing parameters for input count rates up to 25 kcps/pixel. Resolution below 10 eV is maintained up to 2.5 kcps/pixel, and at input rates of 25 kcps per pixel the resolution is 26 eV FWHM at 525 eV.},
doi = {10.1007/s10909-018-2071-4},
journal = {Journal of Low Temperature Physics},
number = 1-2,
volume = 194,
place = {United States},
year = {2018},
month = {9}
}

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