  High Power Target systems are key elements in future neutrino and other rare
particle production in accelerators. These systems transform an intense source
of protons into secondary particles of interest to enable new scientific
discoveries. As beam intensity and energies increase, target systems face
significant challenges. Radiation damages and thermal shocks in target
materials were identified as the leading cross-cutting challenges of high-power
target facilities. Target material R&D to address these challenges are
essential to enable and ensure reliable operation of future-generation
accelerators. Irradiation facilities and alternative methods are critical to
provide a full support of material R&D and better address these critical
challenges.
