The JINR Neutrino Program is one of the top priorities of DLNP. This Program diversified in many directions where neutrino oscillations play a major role. Long-baseline accelerator experiments are a powerful and unique tool to search for oscillation parameters. Within Theme 1099, “Neutrino Oscillation Research”, the JINR group has already acquired a broad methodological experience from the NOvA experiment, and we actively prepare for participation in the forthcoming DUNE experiment.

The modular liquid-argon TPC, being designed by the ArgonCube collaboration, is intended to be used as a target and detection media in the DUNE near detector. A neutrino is a neutral particle that can interact at any TPC point. The beam spill duration of 10 μs does not allow the exact time association. To determine the original drift time up to the interaction vertex, the detection of scintillation light emitted simultaneously with liquid-argon ionization is considered to be used as a timestamp.
The JINR's responsibility within the ArgonCube collaboration is to design and produce the liquid-argon light readout (detection) system, including detectors, readout electronics, and a data acquisition system.

This seminar was organized as follows:

• methodological experience of our group in the long-based experiments (NOvA)
• formulation of the liquid-argon light detection problem
• designing and testing light readout detector modules, their implementation into the general light readout system and integrating into the modular TPC
• prospects.

The seminar was held in connection with the preparation of the NOvA/DUNE experiment within Theme 1099.