Transactions of the Korean Nuclear Society Virtual Autumn Meeting December 17-18 Electromagnetic Design of Wobbler Using Halbach Dipole Magnets for KOMAC RI Production Beamline

It plans to produce various radioactive isotopes using 100-MeV proton beam obtained from KOMAC proton linac [1]. The proton beam obtained at the end of the linac is transported to the target room using dipole electromagnets and quadrupole electromagnets, and it is irradiated on the RI production target to make various radioactive isotopes. Since the proton beam power reaches tens of kW to produce large amounts of radioactive isotopes, it is necessary to increase the size of the proton beam to a size similar to the RI production target. For this purpose, a wobbler should be installed, but in the case of the KOMAC RI beamline, it is impossible to install the wobbler using electromagnet due to the very limited space. To solve this problem, Halbach dipole magnets were decided to be used [2].