HITACHI : Activities of Hitachi Regarding Construction of the J-PARC Accelerator

Volume 56 Number 4 November 2007

AUTHORS

Takashi Watanabe	Medical Systems and Nuclear Equipment Div., Hitachi Works, Power Systems, Hitachi, Ltd.
Takabumi Yoshinari	Nuclear Power Business Development & Management Div., Nuclear Systems Div., Power Systems, Hitachi, Ltd.
Yutaka Chida	Particle Therapy Systems Dept., Medical Systems and Nuclear Equipment Div., Hitachi Works, Power Systems, Hitachi, Ltd.
Shoichiro Koseki, Dr. Eng.	Electrical Control Systems Div., Information & Control Systems Div., Information & Telecommunication Systems, Hitachi, Ltd.
Mitsushi Abe	Chemical & Detection System Development Project, Power & Industrial Systems R&D Lab., Power Systems, Hitachi, Ltd.

OVERVIEW

The accelerator at J-PARC is composed of a 330-m-long linac (linear accelerator), a 3-GeV rapid cycling synchrotron with a circumference of 350 m, and a 50-GeV synchrotron with a circumference of 1,570 m. Through cooperation between JAEA and KEK, the accelerator is currently under construction at JAEA Tokai Research and Development Center, and beam commissioning of the whole accelerator system is targeted for 2008. Along with JAEA and KEK, Hitachi is advancing technical developments based on its accumulated know-how on electromagnet and power-supply technologies and has constructed some of the main equipment at J-PARC—whose required specifications are the highest level in the world today.

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RELEVANT SITES

	J-PARC
	Proton Beam Therapy
	Proton Therapy System

KEYWORDS

J-PARC, proton accelerator, electromagnet, resonant power supply, eddy current analysis

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