IPAC2018 - List of Authors (Ohuchi, N.)

Paper	Title	Page
TUZGBE2	Final-focus Superconducting Magnets for SuperKEKB	1215
	N. Ohuchi, K.A. Aoki, Y. Arimoto, M.K. Kawai, T. Kawamoto, H. Koiso, Y. Kondo, M. Masuzawa, A. Morita, S. Nakamura, Y. Ohnishi, Y. Ohsawa, T. Oki, H. Sugimoto, K. Tsuchiya, R. Ueki, X. Wang, H. Yamaoka, Z.G. Zong KEK, Ibaraki, Japan M. Anerella, J. Escallier, A.K. Jain, A. Marone, B. Parker, P. Wanderer BNL, Upton, Long Island, New York, USA J. DiMarco, T.G. Gardner, J.M. Nogiec, M.A. Tartaglia, G. Velev Fermilab, Batavia, Illinois, USA T.-H. Kim Mitsubishi Electric Corp, Advanced Technology R & D Center, Hyogo, Japan
	The SuperKEKB collider aims at 40 times higher luminosity than that achieved at KEKB, based on the nano-beam scheme. The vertical beta function at the interaction point will be squeezed to 300μmeter. Final-focus superconducting magnet system which consists of eight main quadrupole magnets, 43 corrector windings, and compensation solenoids is a key component to achieve high luminosity. This invited talk presents the construction and commissioning of the final-focus magnet system.
	Slides TUZGBE2 [4.235 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUZGBE2
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THPAK099	The Influence of Higher Order Multipoles of IR Magnets on Luminosity for SuperKEKB	3463
SUSPF061	use link to see paper's listing under its alternate paper code
	K. Hirosawa, T. Okada Sokendai, Ibaraki, Japan N. Kuroo UTTAC, Tsukuba, Ibaraki, Japan K. Ohmi, N. Ohuchi, D. Zhou KEK, Ibaraki, Japan
	SuperKEKB is an electron-positron circular collider upgraded from KEKB. To reach higher luminosity, values of beta are extremely small at Interaction Point. Although magnets in interaction region have a very strong focusing effect, they make a large disturbance to beams. Higher order multipoles and their skew components of magnetic fields of IR magnets are located at a very high beta section with pi/2 phase difference from IP. These multipoles can give critical effect to beam dynamics at interaction point and reduce luminosity on SuperKEKB design. In this study, we calculated beam dynamics for effect of skew components for multipole magnet, and estimated the influence on luminosity by them.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPAK099
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Final-focus Superconducting Magnets for SuperKEKB

1215

N. Ohuchi, K.A. Aoki, Y. Arimoto, M.K. Kawai, T. Kawamoto, H. Koiso, Y. Kondo, M. Masuzawa, A. Morita, S. Nakamura, Y. Ohnishi, Y. Ohsawa, T. Oki, H. Sugimoto, K. Tsuchiya, R. Ueki, X. Wang, H. Yamaoka, Z.G. Zong
KEK, Ibaraki, Japan
M. Anerella, J. Escallier, A.K. Jain, A. Marone, B. Parker, P. Wanderer
BNL, Upton, Long Island, New York, USA
J. DiMarco, T.G. Gardner, J.M. Nogiec, M.A. Tartaglia, G. Velev
Fermilab, Batavia, Illinois, USA
T.-H. Kim
Mitsubishi Electric Corp, Advanced Technology R & D Center, Hyogo, Japan

The SuperKEKB collider aims at 40 times higher luminosity than that achieved at KEKB, based on the nano-beam scheme. The vertical beta function at the interaction point will be squeezed to 300μmeter. Final-focus superconducting magnet system which consists of eight main quadrupole magnets, 43 corrector windings, and compensation solenoids is a key component to achieve high luminosity. This invited talk presents the construction and commissioning of the final-focus magnet system.

Slides TUZGBE2 [4.235 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUZGBE2

Export •

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

THPAK099

The Influence of Higher Order Multipoles of IR Magnets on Luminosity for SuperKEKB

3463

SUSPF061

use link to see paper's listing under its alternate paper code

K. Hirosawa, T. Okada
Sokendai, Ibaraki, Japan
N. Kuroo
UTTAC, Tsukuba, Ibaraki, Japan
K. Ohmi, N. Ohuchi, D. Zhou
KEK, Ibaraki, Japan

SuperKEKB is an electron-positron circular collider upgraded from KEKB. To reach higher luminosity, values of beta are extremely small at Interaction Point. Although magnets in interaction region have a very strong focusing effect, they make a large disturbance to beams. Higher order multipoles and their skew components of magnetic fields of IR magnets are located at a very high beta section with pi/2 phase difference from IP. These multipoles can give critical effect to beam dynamics at interaction point and reduce luminosity on SuperKEKB design. In this study, we calculated beam dynamics for effect of skew components for multipole magnet, and estimated the influence on luminosity by them.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPAK099

Export •

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