T. Mochizuki, J. Xia, M. Shiozawa, T. Yano, Y. Nishimura
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Development of a Bleeder Circuit of 50 cm Diameter Photomultiplier Tubes for Hyper-Kamiokande
The design of the bleeder circuit of the photomultiplier tubes for Hyper-Kamiokande was optimized to satisfy required specifications. We achieved the wide dynamic range over 1,000 photo-electrons. We also confirmed the gain stability within 10% change for the light amount up to 650 photo-electrons and the rate tolerance up to 90 MHz for single photo-electron level signal.