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- Title
Superconducting transition edge bolometer for high-flux neutron detection.
- Authors
Brock, Mette Bybjerg; Østergaard, Emil Visby; Busi, Matteo; Wulff, Anders C.; Abrahamsen, Asger Bech; Kuhn, Luise Theil
- Abstract
Needs for neutron detection and monitoring in high neutron flux environments are increasing in several different fields. A completely solid-state, current mode bolometric detector is constructed as a solid substrate transition edge sensor based on a high-T c superconducting meander. The detector consists of four individual pixels of which three pixels include 10 B 4 C neutron absorption layers. The absorbed energy per neutron absorption reaction is modelled and compared to experimental data. The response of the tested detector is directly correlated to a cold neutron beam with a flux of 1.8 × 10 8 n / cm 2 / s modulated by a slit. The signal is found to be an order of magnitude higher than the thermal background. The dynamics described by the temporal saturation constants is governed by a modulation frequency less than 1 Hz . The thermal response is dynamic and never fully saturates for 50 s exposures. The efficiency for this proof-of-principle design is 1–2%. Possibilities for optimization are identified, that will increase the efficiency to become comparable to existing solid boron-10 detectors. The existing detectors with event-based read-out have limited functionality in high flux environments. The superconducting bolometer described in this work using current-mode readout will pave the way for high flux applications.
- Subjects
SUPERCONDUCTING transitions; BOLOMETERS; NEUTRON capture; NEUTRON flux; NEUTRON counters; NEUTRINOLESS double beta decay; NEUTRON beams; FLUX pinning
- Publication
Scientific Reports, 2023, Vol 13, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-023-49469-4