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

United States Patent

March 4, 2003
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
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.
Frank; Matthias (Oakland, CA), Mears; Carl A. (Windsor, CA), Labov; Simon E. (Berkeley, CA), Hiller; Larry J. (Livermore, CA), Barfknecht; Andrew T. (Menlo Park, CA)
The Regents of the University of California (Oakland, CA)
09/ 395,590
September 14, 1999
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.