eeFACT2022 - List of Authors (Koiso, H.)

Paper	Title	Page
TUXAT0103	SuperKEKB Optics Tuning and Issues	35
	H. Sugimoto, H. Koiso, A. Morita, Y. Ohnishi KEK, Ibaraki, Japan
	SuperKEKB is an electron-positron double-ring asymmetric-energy collider at the High Energy Accelerator Research Organization (KEK) in Japan. It adopts a novel collision method named nano-beam scheme to avoid the so-called hourglass effect. In the nano-beam scheme, two beams are squeezed to extremely small sizes at the interaction point and are collided with a large crossing angle between them. Since staring the collision operation in April 2018, numerous machine tunings and beam studies have been performed to improve the machine performance. The highest peak luminosity so far is 4.65 x 10³⁴ cm^-2 s^-1 reached in June 8th, 2022. This record is the world’s highest instantaneous luminosity and is more than 2 times higher than that of the previous KEKB collider. This talk starts with a brief introduction to SuperKEKB ring lattice design. The talk then presents some important topics related to beam optics tuning in the actual machine operation. Major issues to be resolved to boost the machine performance further are also addressed.
	Slides TUXAT0103 [23.011 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-TUXAT0103
About •	Received ※ 02 November 2022 — Revised ※ 07 February 2023 — Accepted ※ 08 February 2023 — Issue date ※ 09 February 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

SuperKEKB Optics Tuning and Issues

35

H. Sugimoto, H. Koiso, A. Morita, Y. Ohnishi
KEK, Ibaraki, Japan

SuperKEKB is an electron-positron double-ring asymmetric-energy collider at the High Energy Accelerator Research Organization (KEK) in Japan. It adopts a novel collision method named nano-beam scheme to avoid the so-called hourglass effect. In the nano-beam scheme, two beams are squeezed to extremely small sizes at the interaction point and are collided with a large crossing angle between them. Since staring the collision operation in April 2018, numerous machine tunings and beam studies have been performed to improve the machine performance. The highest peak luminosity so far is 4.65 x 10³⁴ cm^-2 s^-1 reached in June 8th, 2022. This record is the world’s highest instantaneous luminosity and is more than 2 times higher than that of the previous KEKB collider. This talk starts with a brief introduction to SuperKEKB ring lattice design. The talk then presents some important topics related to beam optics tuning in the actual machine operation. Major issues to be resolved to boost the machine performance further are also addressed.

Slides TUXAT0103 [23.011 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-TUXAT0103

About •

Received ※ 02 November 2022 — Revised ※ 07 February 2023 — Accepted ※ 08 February 2023 — Issue date ※ 09 February 2023

Cite •

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