Conceptual design and simulations for the Detector Array for Energy Measurements Of Neutrons (DAEMON): Scintillator geometry for the full array

The use of large-scale neutron detector arrays with high energy resolution, especially those that can be coupled with highly efficient γ-ray spectrometers, is imperative in order to increase the understanding of the decay of β-delayed neutron emitters. The DAEMON array, currently being designed for the GRIFFIN decay station at TRIUMF, will improve the precision on the neutron kinetic energy measurement enhancing the current capabilities to study neutron rich nuclei at TRIUMF. The innovative design for DAEMON uses thin fast plastic scintillators placed directly on the front of the DESCANT liquid scintillator cans. To investigate the viability of this augmentation, Geant4 was used to simulate and optimize the experimental design. Two configurations were considered; a geometry using vertical bars spanning the inner arc of DESCANT, and individual tiles matching the geometry of the DESCANT scintillator cans. The latter was found to be the most optimum design, enabling the project to enter a prototype testing phase.