IPAC2016 - List of Authors (Oki, T.)

Paper	Title	Page
TUOBA01	Beam Commissioning of SuperKEKB	1019
	Y. Funakoshi, T. Abe, T. Adachi, K. Akai, Y. Arimoto, K. Egawa, Y. Enomoto, J.W. Flanagan, H. Fukuma, K. Furukawa, N. Iida, H. Iinuma, H. Ikeda, T. Ishibashi, M. Iwasaki, T. Kageyama, H. Kaji, T. Kamitani, T. Kawamoto, S. Kazama, M. Kikuchi, T. Kobayashi, K. Kodama, H. Koiso, M. Masuzawa, T. Mimashi, T. Miura, F. Miyahara, T. Mori, A. Morita, S. Nakamura, T.T. Nakamura, H. Nakayama, T. Natsui, M. Nishiwaki, K. Ohmi, Y. Ohnishi, T. Oki, S. Sasaki, M. Satoh, Y. Seimiya, K. Shibata, M. Suetake, Y. Suetsugu, H. Sugimoto, M. Tanaka, M. Tawada, S. Terui, M. Tobiyama, S. Uehara, S. Uno, X. Wang, K. Watanabe, Y. Yano, S.I. Yoshimoto, R. Zhang, D. Zhou, X. Zhou, Z.G. Zong KEK, Ibaraki, Japan D. El Khechen LAL, Orsay, France
	In this report, we describe the machine operation in the first 3 months of the Phase 1 commissioning of SuperKEKB. The beam commissioning is smoothly going on. Vacuum scrubbing, the optics corrections and others are described.
	Slides TUOBA01 [9.346 MB]
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THPMW001	SuperKEKB Main Ring Power Supply System	3531
	S. Nakamura, T. Adachi, T. Oki, N. Tokuda KEK, Ibaraki, Japan
	The power supplies for magnets of KEKB main ring were recycled into SuperKEKB main ring. Several tests were performed for all of the power supplies to check the soundness. Some of the power supplies were improved to satisfy the requirements of optical design, and some of them were replaced by new power supplies. Most of the trim-coils were arranged with one of power supply per a coil in SuperKEKB. The total number of the power supplies is over 2000.
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THPMW003	Prototype Power Supply for SuperKEKB Final Focus Superconducting Corrector Magnets	3537
	T. Oki, T. Adachi, S. Nakamura, N. Ohuchi, N. Tokuda KEK, Ibaraki, Japan
	A prototype power supply for the SuperKEKB final focus superconducting corrector magnets was developed. The aiming specifications of the power supply are a DC rated output of ± 60 A ± 5 V bipolar, current setting resolution < 1 ppm, current stability < 5 ppm/8 h, temperature coefficient < 1 ppm/degree, and current ripple < 5 ppm, where the assumed magnet inductance and cable resistance are 0.2'8.7 mH and 75 mohms, respectively. High power tests were performed and expected results were obtained.
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THPOR006	SuperKEKB Main Ring Magnet System	3778
	M. Masuzawa, K. Egawa, H. Iinuma, T. Kawamoto, S. Nakamura, Y. Ohsawa, T. Oki, R. Sugahara, N. Tokuda KEK, Ibaraki, Japan
	SuperKEKB is an electron-positroncollider, which aims to achieve a peak luminosity 40 times higher than that of KEKB by using the so-called 'nano-beam' scheme. A major upgrade to the Main Ring (MR) magnet system was needed to realize this scheme. The upgrade includes 1) new beam lines in the entire interaction region;2) replacement of the main dipole magnets in the positron ring; 3) a new layout of the wiggler sections in the positron ring, and newly added wiggler section in the electron ring, and; 4) sextupole magnets with tunable tilting tables to control the ratio of skew/normal sextupole components in the positron ring. More than 400 magnets were designed, fabricated, field-measured, installed in the tunnel and aligned in time for Phase 1 commissioning. Alignment of the MR magnets was challenging, since the survey network was destroyed by the Great East Japan Earthquake. Tunnel position changes during the magnet alignment work caused by construction of a new facilities building made the alignment work even more challenging. Construction of the MR magnet system and its first commissioning are reported.
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Paper

Title

Page

Beam Commissioning of SuperKEKB

1019

Y. Funakoshi, T. Abe, T. Adachi, K. Akai, Y. Arimoto, K. Egawa, Y. Enomoto, J.W. Flanagan, H. Fukuma, K. Furukawa, N. Iida, H. Iinuma, H. Ikeda, T. Ishibashi, M. Iwasaki, T. Kageyama, H. Kaji, T. Kamitani, T. Kawamoto, S. Kazama, M. Kikuchi, T. Kobayashi, K. Kodama, H. Koiso, M. Masuzawa, T. Mimashi, T. Miura, F. Miyahara, T. Mori, A. Morita, S. Nakamura, T.T. Nakamura, H. Nakayama, T. Natsui, M. Nishiwaki, K. Ohmi, Y. Ohnishi, T. Oki, S. Sasaki, M. Satoh, Y. Seimiya, K. Shibata, M. Suetake, Y. Suetsugu, H. Sugimoto, M. Tanaka, M. Tawada, S. Terui, M. Tobiyama, S. Uehara, S. Uno, X. Wang, K. Watanabe, Y. Yano, S.I. Yoshimoto, R. Zhang, D. Zhou, X. Zhou, Z.G. Zong
KEK, Ibaraki, Japan
D. El Khechen
LAL, Orsay, France

In this report, we describe the machine operation in the first 3 months of the Phase 1 commissioning of SuperKEKB. The beam commissioning is smoothly going on. Vacuum scrubbing, the optics corrections and others are described.

Slides TUOBA01 [9.346 MB]

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THPMW001

SuperKEKB Main Ring Power Supply System

3531

S. Nakamura, T. Adachi, T. Oki, N. Tokuda
KEK, Ibaraki, Japan

The power supplies for magnets of KEKB main ring were recycled into SuperKEKB main ring. Several tests were performed for all of the power supplies to check the soundness. Some of the power supplies were improved to satisfy the requirements of optical design, and some of them were replaced by new power supplies. Most of the trim-coils were arranged with one of power supply per a coil in SuperKEKB. The total number of the power supplies is over 2000.

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THPMW003

Prototype Power Supply for SuperKEKB Final Focus Superconducting Corrector Magnets

3537

T. Oki, T. Adachi, S. Nakamura, N. Ohuchi, N. Tokuda
KEK, Ibaraki, Japan

A prototype power supply for the SuperKEKB final focus superconducting corrector magnets was developed. The aiming specifications of the power supply are a DC rated output of ± 60 A ± 5 V bipolar, current setting resolution < 1 ppm, current stability < 5 ppm/8 h, temperature coefficient < 1 ppm/degree, and current ripple < 5 ppm, where the assumed magnet inductance and cable resistance are 0.2'8.7 mH and 75 mohms, respectively. High power tests were performed and expected results were obtained.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOR006

SuperKEKB Main Ring Magnet System

3778

M. Masuzawa, K. Egawa, H. Iinuma, T. Kawamoto, S. Nakamura, Y. Ohsawa, T. Oki, R. Sugahara, N. Tokuda
KEK, Ibaraki, Japan

SuperKEKB is an electron-positroncollider, which aims to achieve a peak luminosity 40 times higher than that of KEKB by using the so-called 'nano-beam' scheme. A major upgrade to the Main Ring (MR) magnet system was needed to realize this scheme. The upgrade includes 1) new beam lines in the entire interaction region;2) replacement of the main dipole magnets in the positron ring; 3) a new layout of the wiggler sections in the positron ring, and newly added wiggler section in the electron ring, and; 4) sextupole magnets with tunable tilting tables to control the ratio of skew/normal sextupole components in the positron ring. More than 400 magnets were designed, fabricated, field-measured, installed in the tunnel and aligned in time for Phase 1 commissioning. Alignment of the MR magnets was challenging, since the survey network was destroyed by the Great East Japan Earthquake. Tunnel position changes during the magnet alignment work caused by construction of a new facilities building made the alignment work even more challenging. Construction of the MR magnet system and its first commissioning are reported.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)