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Utilisation and Reliability of High Power Proton Accelerators

Workshop Proceedings, Daejeon, Republic of Korea, 16-19 May 2004

image of Utilisation and Reliability of High Power Proton Accelerators

Accelerator-driven systems (ADS) are being considered for their potential use in the transmutation of radioactive waste. The performance of such hybrid nuclear systems depends to a large extent on the specification and reliability of high power accelerators, as well as the integration of the accelerator with spallation targets and sub-critical systems. At present, much R&D work is still required in order to demonstrate the desired capability of the system as a whole.

Accelerator scientists and reactor physicists from around the world gathered at an NEA workshop to discuss issues of common interest and to present the most recent achievements in their research. Discussions focused on accelerator reliability; target, window and coolant technology; sub-critical system design and ADS simulations; safety and control of ADS; and ADS experiments and test facilities. These proceedings contain the technical papers presented at the workshop as well as summaries of the working group discussions held. They will be of particular interest to scientists working on ADS development as well as on radioactive waste management issues in general.

English

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Development of a Superconducting Proton Linac for ADS

Nuclear Energy Agency

ADS require a high-intensity proton accelerator of which energy and beam power are about 1 GeV and 20-30 MW, respectively. JAERI, KEK, MHI and MELCO have conducted a programme for the development of a superconducting proton linac for the ADS since 2002. This programme, which is based on the achievement of the J-PARC design work, consists of two parts, development of a 972-MHz cryomodule and system design of a superconducting proton linac in the energy range between 0.1 and 1.5 GeV. In the development work of the 972-MHz cryomodule, a prototype cryomodule which includes two nine-cell cavities of b = 0.725, will be developed and the goal is stable operation in the horizontal tests at the surface peak field at 30 MV/m. In the system design work, a preliminary beam dynamics design has been determined with the configuration of a cryomodule with two 972-MHz, nine-cell elliptical cavities, and a room-temperature focusing magnet. This paper provides the present status of the cryomodule development and the system design.

English

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