Superconducting Tunnel Junctions for High-Precision EUV Spectroscopy
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Davis, CA (United States)
- STAR Cryoelectronics, Santa Fe, NM (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
We have characterized the photon response of superconducting tunnel junctions in the extreme ultraviolet energy range below 100 eV with a pulsed 355 nm laser. The detectors are operated at rates up to 5000 counts/s, are very linear in energy and have an energy resolution between 0.9 and 2 eV. Here, we observe multiple peaks that correspond to an integer number of photons with a Poissonian probability distribution and that can be used for high-accuracy energy calibration. The uncertainty of the centroid depends on the detector resolution and the counting statistics and can be as low as 1 meV for well-separated peaks with > 105 counts. We discuss the precision of the peak centroid as a function of detector resolution and total number of counts and the accuracy of the energy calibration.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344; SC0006214; SC0004359; 14-LW-073
- OSTI ID:
- 1331444
- Report Number(s):
- LLNL-CONF-704389; PII: 1443
- Journal Information:
- Journal of Low Temperature Physics, Vol. 184, Issue 3-4; Conference: 16. Workshop on Low Temperature Detectors, Grenoble (France), 20 - 24 Jul 2015; ISSN 0022-2291
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Non-linearities in Superconducting Tunnel Junction Radiation Detectors and Their MCA Readout
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