IPAC2011 - List of Authors (Tani, N.)

Paper	Title	Page
TUPS057	Displacement of J-PARC Caused by Megaquake	1662
	M.J. Shirakata, Y. Fujii, T. Ishii, Y. Shirakabe KEK, Tsukuba, Japan H. Harada, S. Harjo, T. Iwahashi, S.I. Meigo, T. Morishita, N. Tani JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
	Accelerators, beam lines, and experimental halls located in the J-PARC site were displaced by the 2011 off the Pacific coast of Tohoku Earthquake happened on 11th March, whose magnitude was nine, and its following many aftershocks. Site-wide network of measurement points distributed on grounds, buildings, and magnets was surveyed by using GPS survey system, precise digital levels, and laser trackers. The effect from the megaquake was reported for each J-PARC components, such as LINAC, Rapid Cycling Synchrotron (RCS), Main Ring (MR), neutrino and hadron beam lines, and experimental halls.

THPO003	Rapid-cycling Power Supplies for the J-PARC RCS Sextupole Magnets	3338
	Y. Watanabe JAEA, Ibaraki-ken, Japan T. Adachi, S. Igarashi, H. Someya KEK, Ibaraki, Japan N. Tani JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
	The rapid-cycling synchrotron of the Japan Proton Accelerator Research Complex requires 18 sextupole magnets with three families for the chromaticity correction. One family consists of six focusing sextupole magnets, and other two families consist of six defocusing sextupole magnts. An individual power supply excited for each family and the current pattern is a DC-biased sinusoidal of a frequency of 25 Hz. This paper describes design and test results of the sextupole magnet power supplies.

Paper

Title

Page

Displacement of J-PARC Caused by Megaquake

1662

M.J. Shirakata, Y. Fujii, T. Ishii, Y. Shirakabe
KEK, Tsukuba, Japan
H. Harada, S. Harjo, T. Iwahashi, S.I. Meigo, T. Morishita, N. Tani
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan

Accelerators, beam lines, and experimental halls located in the J-PARC site were displaced by the 2011 off the Pacific coast of Tohoku Earthquake happened on 11th March, whose magnitude was nine, and its following many aftershocks. Site-wide network of measurement points distributed on grounds, buildings, and magnets was surveyed by using GPS survey system, precise digital levels, and laser trackers. The effect from the megaquake was reported for each J-PARC components, such as LINAC, Rapid Cycling Synchrotron (RCS), Main Ring (MR), neutrino and hadron beam lines, and experimental halls.

THPO003

Rapid-cycling Power Supplies for the J-PARC RCS Sextupole Magnets

3338

Y. Watanabe
JAEA, Ibaraki-ken, Japan
T. Adachi, S. Igarashi, H. Someya
KEK, Ibaraki, Japan
N. Tani
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan

The rapid-cycling synchrotron of the Japan Proton Accelerator Research Complex requires 18 sextupole magnets with three families for the chromaticity correction. One family consists of six focusing sextupole magnets, and other two families consist of six defocusing sextupole magnts. An individual power supply excited for each family and the current pattern is a DC-biased sinusoidal of a frequency of 25 Hz. This paper describes design and test results of the sextupole magnet power supplies.