May 24 – 28, 2021
America/Vancouver timezone

Development of the in-situ Calibration System using LEDs and Light Guide Plates for the SuperFGD

May 25, 2021, 5:00 AM
Poster Sensors: Light-based detectors Sensor Posters: Light-based Detectors


Takuji Arihara (Tokyo Metropolitan University )


T2K is a long-baseline neutrino experiment that aims to investigate the CP violation in the neutrino sector. An upgrade of the ND280, which is one of the T2K near detectors, is in progress. The active target detector of the upgraded ND280 is a segmented highly granular plastic scintillation detector (SuperFGD) consisting of about two million cubes. About sixty thousand silicon photo-multipliers (SiPMs) coupled with wavelength shifting fibers are used for light readout. The fibers go through the scintillator cubes along the orthogonal three directions. We developed a new system based on LEDs and notched light guide plates for in-situ calibration of SuperFGD. The developed system can distribute LED light for SiPMs simultaneously with high uniformity and be used for gain calibration and stability monitor of the signal readout. In addition, it can fit in the confined space of the SuperFGD due to its thin structure. We will present the design and the performance of the calibration system.

TIPP2020 abstract resubmission? Yes, this would have been presented at TIPP2020.

Primary author

Takuji Arihara (Tokyo Metropolitan University )


Aleksandr Boikov (Joint Institute for Nuclear Research) Hidekazu Kakuno (Tokyo Metropolitan University ) Olivier Drapier (Ecole Polytechnique, IN2P3-CNRS) Svetlana Tereshchenko (Joint Institute for Nuclear Research) Tsunayuki Matsubara (High Energy Accelerator Research Organization) Viacheslav Tereshchenko (Joint Institute for Nuclear Research) Yuri Davydov (Joint Institute for Nuclear Research)

Presentation materials