IPAC2016 - List of Authors (Higashi, N.)

Paper	Title	Page
TUPMB033	Design and Construction of the QC2 Superconducting Magnets in the SuperKEKB IR	1174
	N. Ohuchi, Y. Arimoto, N. Higashi, M. Iwasaki, M.K. Kawai, Y. Kondo, K. Tsuchiya, X. Wang, H. Yamaoka, Z.G. Zong KEK, Ibaraki, Japan H.K. Kono, T. Murai, S. Takagi Mitsubishi Electric Corp., Energy Systems Centre, Kobe, Japan
	SuperKEKB is now being constructed with a target luminosity of 8×10³⁵ which is 40 times higher than the KEKB luminosity. The luminosity can be achieved by the "Nano-Beam" accelerator scheme, in which both beams should be squeezed to about 50 nm at the beam interaction point, IP. The beam final focusing system consists of 8 superconducting quadrupole magnets, 4 superconducting solenoids and 43 superconducting corrector coils. The QC2 magnets are designed to be located in the second closest position from IP as the final beam focusing system of SuperKEKB. The two types of quadrupole magnets have been designed for the electron and positron beam lines. The QC2P for the positron beam is designed to generate the field gradient, G, of 28.1 T/m and the effective magnetic length, L, of 0.4099 m at the current, I, of 877.4 A. The QC2E for the electron beam line is designed to generate G=28.44 T/m and L=0.537 mm, 0.419 mm (for QC2LE, QC2RE) at I=977 A. In the paper, we will present the designs and the constructions of the two types of the quadrupole magnets.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB033
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TUPMB041	The SuperKEKB Interaction Region Corrector Magnets	1193
	B. Parker, M. Anerella, J. Escallier, A.K. Ghosh, A.K. Jain, A. Marone, P. Wanderer BNL, Upton, Long Island, New York, USA Y. Arimoto, N. Higashi, M. Iwasaki, N. Ohuchi, K. Tsuchiya, X. Wang, H. Yamaoka, Z.G. Zong KEK, Ibaraki, Japan
	Work for the SuperKEKB luminosity upgrade of the KEKB asymmetric e⁺e⁻ collider is near completion. In this paper we review the design, production and testing of superconducting correction coils, that are needed to achieve the desired IR optics performance, and are integrated with the final focus magnets. For SuperKEKB 43 coils were produced at BNL using Direct Wind techniques. These coils underwent preliminary warm field harmonic quality assurance measurements before shipment to KEK. At KEK final cold measurements of these coils were made prior to their ultimate integration with the SuperKEKB IR magnets. SuperKEKB corrector production was challenging due to the large number of coil types and configurations that had to be fitted into very limited available space. Also the nature of the SuperKEKB optics sets fairly stringent local field quality requirements for these coils.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB041
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Design and Construction of the QC2 Superconducting Magnets in the SuperKEKB IR

1174

N. Ohuchi, Y. Arimoto, N. Higashi, M. Iwasaki, M.K. Kawai, Y. Kondo, K. Tsuchiya, X. Wang, H. Yamaoka, Z.G. Zong
KEK, Ibaraki, Japan
H.K. Kono, T. Murai, S. Takagi
Mitsubishi Electric Corp., Energy Systems Centre, Kobe, Japan

SuperKEKB is now being constructed with a target luminosity of 8×10³⁵ which is 40 times higher than the KEKB luminosity. The luminosity can be achieved by the "Nano-Beam" accelerator scheme, in which both beams should be squeezed to about 50 nm at the beam interaction point, IP. The beam final focusing system consists of 8 superconducting quadrupole magnets, 4 superconducting solenoids and 43 superconducting corrector coils. The QC2 magnets are designed to be located in the second closest position from IP as the final beam focusing system of SuperKEKB. The two types of quadrupole magnets have been designed for the electron and positron beam lines. The QC2P for the positron beam is designed to generate the field gradient, G, of 28.1 T/m and the effective magnetic length, L, of 0.4099 m at the current, I, of 877.4 A. The QC2E for the electron beam line is designed to generate G=28.44 T/m and L=0.537 mm, 0.419 mm (for QC2LE, QC2RE) at I=977 A. In the paper, we will present the designs and the constructions of the two types of the quadrupole magnets.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB033

Export •

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

TUPMB041

The SuperKEKB Interaction Region Corrector Magnets

1193

B. Parker, M. Anerella, J. Escallier, A.K. Ghosh, A.K. Jain, A. Marone, P. Wanderer
BNL, Upton, Long Island, New York, USA
Y. Arimoto, N. Higashi, M. Iwasaki, N. Ohuchi, K. Tsuchiya, X. Wang, H. Yamaoka, Z.G. Zong
KEK, Ibaraki, Japan

Work for the SuperKEKB luminosity upgrade of the KEKB asymmetric e⁺e⁻ collider is near completion. In this paper we review the design, production and testing of superconducting correction coils, that are needed to achieve the desired IR optics performance, and are integrated with the final focus magnets. For SuperKEKB 43 coils were produced at BNL using Direct Wind techniques. These coils underwent preliminary warm field harmonic quality assurance measurements before shipment to KEK. At KEK final cold measurements of these coils were made prior to their ultimate integration with the SuperKEKB IR magnets. SuperKEKB corrector production was challenging due to the large number of coil types and configurations that had to be fitted into very limited available space. Also the nature of the SuperKEKB optics sets fairly stringent local field quality requirements for these coils.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB041

Export •

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