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Cryogenic, high-resolution x-ray detector with high count rate capability

Patent ·
OSTI ID:875091
 [1];  [2];  [3];  [4];  [5]
  1. Oakland, CA
  2. Windsor, CA
  3. Berkeley, CA
  4. Livermore, CA
  5. Menlo Park, CA
+ Show Author Affiliations
A cryogenic, high-resolution X-ray detector with high count rate capability has been invented. The new X-ray detector is based on superconducting tunnel junctions (STJs), and operates without thermal stabilization at or below 500 mK. The X-ray detector exhibits good resolution (.about.5-20 eV FWHM) for soft X-rays in the keV region, and is capable of counting at count rates of more than 20,000 counts per second (cps). Simple, FET-based charge amplifiers, current amplifiers, or conventional spectroscopy shaping amplifiers can provide the electronic readout of this X-ray detector.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
US 6528814
Application Number:
09/395590
OSTI ID:
875091
Country of Publication:
United States
Language:
English

References (4)

Josephson junction integrated circuit process with planarized PECVD SiO/sub 2/ dielectric journal March 1993
A simple and robust niobium Josephson junction integrated circuit process journal March 1991
Improved 1 V and 10 V Josephson voltage standard arrays journal June 1997
Superconducting tunnel-junction x-ray detectors with niobium absorbers and aluminum quasi-particle traps conference October 1992

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