The Super-Kamiokande detector is useful for neutrino detections generally, and they calibrate it from time to time using various devices, and have been for deca

The Super-Kamiokande detector is useful for neutrino detections generally, and they calibrate it from time to time using various devices, and have been for decades (!). https://arxiv.org/abs/hep-ex/9807027v1 https://arxiv.org/abs/hep-ex/9807027v1 [1998] The T2K experiment is in a way essentially another calibration system. It of course has its own overview page at http://t2k-experiment.org/t2k/ http://t2k-experiment.org/t2k/