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Scintillator ageing of the T2K near detectors from 2010 to 2021
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(2022) Scintillator ageing of the T2K near detectors from 2010 to 2021. Journal of Instrumentation, 17 (10). P10028. doi:10.1088/1748-0221/17/10/p10028 ISSN 1748-0221.
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Official URL: https://doi.org/10.1088/1748-0221/17/10/P10028
Abstract
The T2K experiment widely uses plastic scintillator as a target for neutrino interactions and an active medium for the measurement of charged particles produced in neutrino interactions at its near detector complex. Over 10 years of operation the measured light yield recorded by the scintillator based subsystems has been observed to degrade by 0.9–2.2% per year. Extrapolation of the degradation rate through to 2040 indicates the recorded light yield should remain above the lower threshold used by the current reconstruction algorithms for all subsystems. This will allow the near detectors to continue contributing to important physics measurements during the T2K-II and Hyper-Kamiokande eras. Additionally, work to disentangle the degradation of the plastic scintillator and wavelength shifting fibres shows that the reduction in light yield can be attributed to the ageing of the plastic scintillator. The long component of the attenuation length of the wavelength shifting fibres was observed to degrade by 1.3–5.4% per year, while the short component of the attenuation length did not show any conclusive degradation.
| Item Type: | Journal Article | ||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||
| SWORD Depositor: | Library Publications Router | ||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Gamma rays , Detectors , Scintillators , Neutrinos , Neutrino interactions | ||||||||||||||||||||||||
| Journal or Publication Title: | Journal of Instrumentation | ||||||||||||||||||||||||
| Publisher: | IOP Publishing Ltd | ||||||||||||||||||||||||
| ISSN: | 1748-0221 | ||||||||||||||||||||||||
| Official Date: | 17 October 2022 | ||||||||||||||||||||||||
| Dates: |
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| Volume: | 17 | ||||||||||||||||||||||||
| Number: | 10 | ||||||||||||||||||||||||
| Number of Pages: | 35 | ||||||||||||||||||||||||
| Article Number: | P10028 | ||||||||||||||||||||||||
| DOI: | 10.1088/1748-0221/17/10/p10028 | ||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||
| Date of first compliant deposit: | 8 November 2022 | ||||||||||||||||||||||||
| Date of first compliant Open Access: | 9 November 2022 | ||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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