2003•Unpublished venueRequires access
DESIGN AND R&D STATUS OF NP-HALL BEAM DUMP IN J-PARC
K. Agari, M. Ieiri, Y. Katoh, Eiji Kusano, M. Minakawa, H. Noumi, Y. Sato, S. Sawada, Yoshihiro Suzuki, H. Takahashi, M. Takasaki, К. Таnака, Yusuke Yamada, Y. Yamanoi
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Abstract
Japan Proton Accelerator Research Complex (J-PARC) is now under construction in Tokai-mura by the High Energy Accelerator Research Organization (KEK) and the Japan Atomic Energy Research Institute (JAERI). JPARC 50GeV-PS (Proton Synchrotron) aims to provide more than 100 times higher beam power than that of KEK 12GeV-PS. An experimental hall for nuclear and particle physics (NP-hall) [1] is designed to handle intense slowextraction proton beam and provide kaons, pions, and other secondary particles for multi-purpose physics use. A beam dump at the aftermost of the primary beam line (A-line) is designed to safely absorb the 750 kW beam power. Its central core is made of copper and iron material with water coolant, and covered by concrete for radiation protection. The beam dump has to be moved to downstream when NP-hall will be expanded in the future. Important issues of the beam dump can be summarized as follows. 1. Heat generation, 2. Radiation safety, and 3. Moving safely to downstream in the future. The present article reports the current status of our R&D of robust and radiation-resistant cooling system and how to move the beam dump safely.