HYBRID Meeting – Neutrino Seminar Series: Event-by-event neutron kinematic detection with novel 3D-projection scintillator detectors in long-baseline neutrino experiments

  • Dec. 8, 2022, 1:00 pm US/Central
  • Curia II

Presented by Guang Yang (UC Berkeley)

Abstract: Long-baseline neutrino oscillation experiments rely on detailed models of neutrino interactions on nuclei. These models constitute an important source of systematic uncertainty, in part because current detectors have been blind to final-state neutrons. A novel 3D-projection scintillator tracker, called SuperFGD, will be the tracker of the upgraded off-axis near detector of the T2K experiment. Due to the excellent timing resolution and fine granularity, this technology is capable of measuring neutron kinematics in (anti)neutrino interactions on an event-by-event basis. It will provide valuable data for refining neutrino interaction models and ways to reconstruct neutrino energy. Two prototypes have been exposed to the neutron beamline at Los Alamos National Laboratory (LANL) in both 2019 and 2020 with neutron energies between 0 and 800 MeV. In order to demonstrate the capability of neutron detection, the total neutron cross section on CH is measured with one of the prototypes and compared to external measurements. The total neutron cross section in scintillator between 98 and 688 MeV was measured and will be presented in this seminar.

Link to ArXiv: https://arxiv.org/abs/2207.02685 and https://arxiv.org/abs/2211.17037

My bio: I obtained my Ph.D. degree at the Illinois Institute of Technology in 2016. During my Ph.D. period, I was funded by and worked in Argonne National lab for four years (2012-2016) on Double Chooz and JUNO. Then I moved to Stony Brook University working mainly in DUNE and T2K. I’ve been participating in a number of new designs in both DUNE and T2K near detector systems. In addition, I’ve been leading a neutron beam test effort to demonstrate the first-time-ever neutron kinematic detection on an event-by-event basis with a neutrino detector. In 2021, I moved to UC Berkeley as an academic researcher working on Water-based Liquid Scintillator development, hoping to implement Theia in the DUNE far detector hall.