A
6Li-doped pulse shape sensitive plastic scintillator for ton-scale
detector applications

Year
2023
Author(s)
Steven A. Dazeley - Lawrence Livermore National Laboratory
Nathaniel S. Bowden - Lawrence Livermore National Laboratory
Timothy M. Classen - Lawrence Livermore National Laboratory
Sean Durham - Lawrence Livermore National Laboratory
Michael J. Ford - Lawrence Livermore National Laboratory
Viacheslav Li - Lawrence Livermore National Laboratory
Michael P. Mendenhall - Lawrence Livermore National Laboratory
Cristian Roca - Lawrence Livermore National Laboratory
Felicia Sutanto - Lawrence Livermore National Laboratory
Natalia Zaitseva - Lawrence Livermore National Laboratory
Xianyi Zhang - Lawrence Livermore National Laboratory
File Attachment
finalpaper_259_0511035918.pdf4.85 MB
Abstract
Large-scale 6Li-doped pulse shape sensitive plastic scintillator is one of several technologies under development within the Mobile Antineutrino Demonstrator project. Liquid scintillator with similar capabilities was one of key aspects of the aboveground reactor antineutrino detection demonstration by the PROSPECT experiment. However, a plastic material is considered a requirement for truly mobile above-ground detection systems suited to reactor monitoring for safeguards. The new formulation of plastic scintillator is being developed in partnership with Eljen Technologies and can be obtained in multi-liter single volumes enabling the construction of segments at meter-scale lengths. For this project, one of the designs under consideration is a 256 element 2D array of meter-long scintillator bars. To maximize the light collection of each segment, the bars will be wrapped in a highly reflective mirror-like film manufactured by 3M called DF2000MA. We will present a summary of measured performance criteria, which include attenuation length, stability, pulse shape sensitivity, and fast and slow neutron efficiency measurements, and discuss how those performance criteria might translate to the overall performance of MAD.