Beam dump development for a korean proton accelerator*

A beam dump for a 20 MeV, 4.8 mA proton beam had been manufactured in Korea. The beam dump was made of graphite for low radioactivity, and was brazed to copper for cooling. The IG 430 graphite and Oxygen Free High Conductivity (OFHC) copper were brazed using a TiCuSil filler metal, which is a compound of 4.5% titanium, 27% copper, and 68.8% silver [1]. The beam dump was designed by placing two graphite plates 30 cm 60 cm in size at an angle of 15 degrees in order to reduce the peak heat flux in the beam dump [2,3,4]. Also, a 100 MeV proton beam dump was designed with copper of high heat conductivity.