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

doi:10.1007/s10909-018-2071-4

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

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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:

^[1]; Ponce, F. ^[2]; Friedrich, S. ^[2]; Cantor, R. ^[1]

STAR Cryoelectronics, Santa Fe, NM (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Publication Date:: 2018-09-26

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.

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                    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.

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                    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.

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@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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DOI: 10.1007/s10909-018-2071-4

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