The Japan Proton Accelerator Research Complex (J-PARC) is a Japanese research facility operated by High-Energy Accelerator Research Organization (KEK) and Japan Atomic Energy Agency (JAEA). J-PARC is composed of three proton accelerators (400 MeV linac, 3 GeV Rapid Cycle Synchrotron, and 30 GeV Main Ring) and three research facilities (Materials and Life Science Experimental Facility, Neutrino Experimental Facility, and Hadron Experimental Facility). 

At each facility, targets and beam windows are being developed to meet the objectives of current or future facility designs. As part of the RaDIATE collaboration, J-PARC’s material studies for various targets and beam windows will benefit the research at J-PARC and participating institutions.  

The materials and alloys J-PARC is evaluating for targets and beam windows include graphite, silicon carbide, mercury, tungsten, aluminum, stainless steel, titanium, gold, platinum, beryllium and lead bismuth.