Cryogenic readout electronics and quality assurance in the DUNE experiment

The Deep Underground Neutrino Experiment (DUNE) will enable a broad exploration of neutrinos physics. It includes potential discovery for charge-parity symmetry violation in neutrino flavor mixing, and the determination of the unknown neutrino mass ordering, among other interesting neutrino sector observables. A high-intensity neutrino beam will be generated at Fermilab, of which the parameters are measured by a near detector. The neutrinos travel about 1.3 km before reaching the far detectors located 1.5 km underground. The far detectors use the LArTPC technology, where each detector is immersed in 17.5 kt liquid argon (LAr) with a temperature kept at 88 K. To achieve its desired performance, low-noise cryogenic electronics are mounted directly on the detector inside the LAr. The low-noise cryogenic electronics have been designed and are tested in the protoDUNEI/II prototypes. During DUNE operation, the cryogenic electronics cannot be accessed or repaired. Therefore, dedicated quality control tests on the cryogenic electronics are necessary. An introduction on the DUNE cryogenic electronics and their quality assurance testing will be presented.