A 4pi time-of-flight detector for the ND280/T2K upgrade
| Autor: | Korzenev, A., Barao, F., Bordoni, S., Breton, D., Cadoux, F., Favre, Y., Khabibullin, M., Khotyantsev, A., Kudenko, Y., Lux, T., Maalmi, J., Mermod, P., Mineev, O., Sanchez, F. |
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| Přispěvatelé: | Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics - Instrumentation and Detectors
010308 nuclear & particles physics Physics::Instrumentation and Detectors FOS: Physical sciences time-of-flight counter Instrumentation and Detectors (physics.ins-det) KAMIOKANDE scintillation counter: plastics four-pi-detector 01 natural sciences 030218 nuclear medicine & medical imaging time projection chamber 03 medical and health sciences 0302 clinical medicine near detector 0103 physical sciences muon: cosmic radiation High Energy Physics::Experiment photomultiplier: silicon upgrade [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] Instrumentation time resolution Mathematical Physics activity report |
| Popis: | ND280 is a near detector of the T2K experiment which is located in the J-PARC accelerator complex in Japan. After a decade of fruitful data-taking, ND280 is scheduled for upgrade. The time-of-flight (ToF) detector, which is described in this article, is one of three new detectors that will be installed in the basket of ND280. The ToF detector has a modular structure. Each module represents an array of 20 plastic scintillator bars which are stacked in a plane of 2.4 x 2.2 m2 area. Six modules of similar construction will be assembled in a cube, thus providing an almost 4pi enclosure for an active neutrino target and two TPCs. The light emitted by scintillator is absorbed by arrays of large-area silicon photo-multipliers (SiPMs) which are attached to both ends of every bar. The readout of SiPMs, shaping and analog sum of individual SiPM signals within the array are performed by a discrete circuit amplifier. An average time resolution of about 0.14 ns is achieved for a single bar when measured with cosmic muons. The detector will be installed in the basket of ND280, where it will be used to veto particle originating outside the neutrino target, improve the particle identification and provide a cosmic trigger for calibration of detectors which are enclosed inside it. 9 pages, 5 figures |
| Databáze: | OpenAIRE |
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