Journals & Magazines >IEEE Transactions on Applied ... >Volume: 20 Issue: 3

Application of Energy Storage System for Stabilization of Accelerator Magnet Power Supply

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Abstract:

Magnets of the synchrotron which extracts the accelerated beams are excited by a pulse operation power supply, and then the load fluctuation should be a severe problem. A...Show More

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Abstract:

Magnets of the synchrotron which extracts the accelerated beams are excited by a pulse operation power supply, and then the load fluctuation should be a severe problem. An energy storage system, such as superconducting magnetic energy storage (SMES), fly-wheel generator so far, will be required for compensating the pulse electric power, and reducing the disturbances of the connected power line. The system is expected to protect the instantaneous voltage drop and the load fluctuation. Present status of R & D and the features for the energy storage systems are discussed. The application of the energy storage systems to synchrotrons for the medical use is described. The compensation of the typical pulse electric power of the synchrotron for the cancer therapy is studied, and the operation cost saving and the cost performance of the SMES system are discussed.

Published in: IEEE Transactions on Applied Superconductivity ( Volume: 20, Issue: 3, June 2010)

Page(s): 1312 - 1315

Date of Publication: 08 April 2010

ISSN Information:

DOI: 10.1109/TASC.2010.2042797

Hikaru Sato

High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan

Takakazu Shintomi

Nihon University, Chiyoda, Tokyo, Japan

Toshifumi Ise

Osaka University, Suita, Osaka, Japan

Yushi Miura

Osaka University, Suita, Osaka, Japan

Shinichi Nomura

Tokyo Institute of Technology, Meguro, Tokyo, Japan

Ryuichi Shimada

Tokyo Institute of Technology, Meguro, Tokyo, Japan

Contents

I Introduction

Accellerators have been developed historically to use mainly for nuclear and particle physics experiments, and their characteristics have been improved to provide higher beam energy and beam intensity, and extended to collider machines. In some applications, synchrotrons are operated with a pulse mode for extracting accelerated beam. In case of large synchrotrons such as the J-PARC 50-GeV main ring, the CERN-PS and the BNL-AGS, large electric power swing is generated and electric disturbances occur in connected power networks. In such case some electric power compensation devices have to be installed.