7–11 Sept 2025
Teaching Hub 502
Europe/London timezone

Beam size measurement at SBL in SuperKEKB

TUPMO07
9 Sept 2025, 16:00
2h
Mountford Hall, Liverpool Guild of Students

Mountford Hall, Liverpool Guild of Students

Liverpool Guild of Students, University of Liverpool
Poster Presentation MC04: Transverse Profile and Emittance Monitors Tuesday Poster Session

Speaker

Hitomi Ikeda (High Energy Accelerator Research Organization, The Graduate University for Advanced Studies, SOKENDAI)

Description

Sudden beam loss (SBL) is one of the obstacles to improving the luminosity of SuperKEKB. SBL cause damage to collimators and other accelerator components, QCS quench, and large background to the Belle II detector. It also causes beam abort and prevents the accumulation of high currents. Therefore, it is an important issue to investigate and resolve the causes of SBL events. In order to investigate the causes of SBL events, we measured the beam profile at the moment abort due to SBL using three different cameras and found that the beam size was larger than at the moment of abort due to other causes. This paper summarizes the results of the beam size measurements made as part of the investigation into the cause of the SBL.

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Author

Hitomi Ikeda (High Energy Accelerator Research Organization, The Graduate University for Advanced Studies, SOKENDAI)

Co-authors

Hitoshi Fukuma (High Energy Accelerator Research Organization, The Graduate University for Advanced Studies, SOKENDAI) Toshiyuki Mitsuhashi (High Energy Accelerator Research Organization, The Graduate University for Advanced Studies, SOKENDAI) Gaku Mitsuka (High Energy Accelerator Research Organization, The Graduate University for Advanced Studies, SOKENDAI) Makoto Tobiyama (High Energy Accelerator Research Organization, The Graduate University for Advanced Studies, SOKENDAI)

Presentation materials

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