https://doi.org/10.1051/epjconf/202532000037
HKROC: An integrated front-end ASIC to read out photomultiplier tubes for large neutrino experiments
1 OMEGA, CNRS, École polytechnique, Institut Polytechnique de Paris, 91120 Palaiseau, France
2 Laboratoire Leprince Ringuet, École polytechnique, Institut Polytechnique de Paris, 91120 Palaiseau, France
3 IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
4 AGH University of Krakow, al. Mickiewicza 30, 30-059 Krakow, Poland
5 Université Paris-Saclay, France
* Corresponding author: fdulucq@in2p3.fr
Published online: 7 March 2025
The HKROC ASIC was originally designed to read out the photomultiplier tubes (PMTs) for the Hyper-Kamiokande (HK) experiment. HKROC is a very innovative ASIC capable to read out a large number of channels satisfying stringent requirements in terms of noise, speed and dynamic range. Each HKROC channel features a low-noise preamplifier and shapers, a 10-bit successive approximation Analog-to-Digital Converter (SAR-ADC) for the charge measurement (up to 2500 pC) and a Time-to-Digital Converter (TDC) for the Time-of-Arrival (ToA) measurement with 25 ps binning. HKROC is auto-triggered and includes all necessary ancillary services as bandgap circuit, PLL (Phase-locked loop) and threshold DACs (Digital to Analog Converters). This presentation will describe the ASIC architecture and the experimental results of the last prototype received in January 2022.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
