A production target of secondary particles for a slowly-extracted high-intensity proton facility needs to accept large heat production at a very limited volume, as the source of the secondary particles should be as small as possible for a good quality secondary beam. High radiation is also an issue. The Hadron Experimental Facility at the Japan Proton Accelerator Research Complex, J-PARC, has developed the production targets with indirect-water cooling, which can be used for the proton beams up to 95 kW, and a target system aiming at receiving more than 150-kW proton beams is under development. In this article, these targets are discussed.
