Published January 15, 2019
| Version v1
Journal article
Performance of Tantalum STJ X-ray Detectors at Elevated Count Rates
- 1. STAR Cryoelectronics (United States)
- 2. Lawrence Livermore National Laboratory (United States)
Description
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.
Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of Low Temperature Physics
- Journal Volume
- 194
- Journal Issue
- 1-2
- Journal Page Range
- p. 136-141
- ISSN
- 0022-2291
- CODEN
- JLTPAC
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 54115526
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; COUNTING RATES; ENERGY RESOLUTION; FINE STRUCTURE; PERFORMANCE; PULSES; SUPERCONDUCTING JUNCTIONS; TANTALUM; X RADIATION; X-RAY SPECTROSCOPY
- Descriptors DEC
- ELECTROMAGNETIC RADIATION; ELEMENTS; IONIZING RADIATIONS; METALS; RADIATIONS; REFRACTORY METALS; RESOLUTION; SPECTROSCOPY; TRANSITION ELEMENTS; TUNNEL JUNCTIONS
Optional Information
- Copyright
- Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature