IBIC2026 - 15th International Beam Instrumentation Conference

Beam quality improvement and beam diagnostics for SuperKEKB injection in the KEK e⁻/e⁺ linac and beam transport lines

MOP021

31 Aug 2026, 16:40

2h

Ballroom C (Whistler Conference Centre)

Poster Presentation MC09: Overview and Commissioning Monday Poster Session 1

Speaker

Fusashi Miyahara (High Energy Accelerator Research Organization)

Description

The KEK e⁻/e⁺ linac supplies, in pulse-by-pulse basis, electron beams to the SuperKEKB HER, PF, and PF-AR, and positron beams to the SuperKEKB LER. Injection into the SuperKEKB HER and LER requires highly stabilized low-emittance beams with high intensity. During beam operation, beam quality is improved and stability is maintained using approximately 160 Beam Position Monitors (BPMs), which are installed from the linac to the BT lines, three synchrotron radiation monitors, and diagnostic beams that are sampled and extracted to a dedicated beam line.This report describes a status of these monitors and the beam tuning methods. It also presents methods for bunch-length measurement and phase-drift correction using existing monitors and accelerating structures.