Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage

Warburton, William K.; Harris, Jackson T.

Title: Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage

Abstract

A technique for characterizing the noise behavior of a superconducting tunnel junction (STJ) detector as a function of its applied bias voltage Vb by stepping the STJ's bias voltage across a predetermined range and, at each applied bias, making multiple measurements of the detector's current, calculating their mean and their standard deviation from their mean, and using this standard deviation as a measure of the STJ detector's noise at that applied bias. Because the method is readily executed under computer control, it is particularly useful when large numbers of STJ detectors require biasing, as in STJ detector arrays In a preferred implementation, the STJ is measured under computer control by attaching it to a digital spectrometer comprising a digital x-ray processor (DXP) coupled to a preamplifier that can set the STJ's bias voltage Vb using a digital-to-analog converter (DAC) controlled by the DXP.

Inventors:: Warburton, William K.; Harris, Jackson T.

Issue Date:: 2020-10-27

Research Org.:: XIA, LLC, Hayward, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1771559

Patent Number(s):: 10816587

Application Number:: 15/141,681

Assignee:: XIA LLC (Hayward, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

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G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
G01R29/26 - Measuring noise figure

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DOE Contract Number:: SC0002256

Resource Type:: Patent

Resource Relation:: Patent File Date: 04/28/2016

Country of Publication:: United States

Language:: English

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                    Warburton, William K., and Harris, Jackson T. Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage.  United States: N. p., 2020. 
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                    Warburton, William K., & Harris, Jackson T. Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage.  United States.

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                    Warburton, William K., and Harris, Jackson T. Tue .  
        "Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage".  United States.  https://www.osti.gov/servlets/purl/1771559.

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@article{osti_1771559,

  title        = {Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage},

  author       = {Warburton, William K. and Harris, Jackson T.},

  abstractNote = {A technique for characterizing the noise behavior of a superconducting tunnel junction (STJ) detector as a function of its applied bias voltage Vb by stepping the STJ's bias voltage across a predetermined range and, at each applied bias, making multiple measurements of the detector's current, calculating their mean and their standard deviation from their mean, and using this standard deviation as a measure of the STJ detector's noise at that applied bias. Because the method is readily executed under computer control, it is particularly useful when large numbers of STJ detectors require biasing, as in STJ detector arrays In a preferred implementation, the STJ is measured under computer control by attaching it to a digital spectrometer comprising a digital x-ray processor (DXP) coupled to a preamplifier that can set the STJ's bias voltage Vb using a digital-to-analog converter (DAC) controlled by the DXP.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {10}

}

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Title: Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage

Abstract

Citation Formats

Preamplifier, and waveform shaping circuit incorporating same patent, July 1992

Noise reduction method for a semiconductor device patent, March 2001

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Method and apparatus for analog signal conditioner for high speed, digital x-ray spectrometer patent, February 1999

Preamplifier, and waveform shaping circuit incorporating same
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Noise reduction method for a semiconductor device
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Measurement of cumulative localized corrosion rate using coupled multielectrode array sensors
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System and method for logarithmic digital to analog conversion
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Method and apparatus for digitally based high speed x-ray spectrometer for direct coupled use with continuous discharge preamplifiers
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System and method for current splitting for variable gain control
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Superconductor-semiconductor hybrid memory circuits with superconducting three-terminal switching devices
patent, February 1995

Fiske modes in superconducting tunnel junction detectors
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Integrated miniature DC SQUID susceptometer for measuring properties of very small samples
patent, May 1986

Superconducting tunnel junction device
patent, April 2002

Devices incorporating phonon filters
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A fast, compact solution for low noise charge preamplifiers
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Detection cell, a detector, a sensor, and a spectroscope using a superconductive tunneling junction
patent, January 1995

Method of processing an image in which the noise is signal-dependent
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Low-power biasing networks for superconducting integrated circuits
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Single photon imaging X-ray spectrometers using low noise current preamplifiers with dc voltage bias
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