IBIC2026 - 15th International Beam Instrumentation Conference

Bunch length measurement with a stripline fast Faraday cup at the end of SCL3 and the KoBRA beamline in RAON

TUP013

1 Sept 2026, 16:20

2h

Ballroom C (Whistler Conference Centre)

Poster Presentation MC05: Longitudinal Diagnostics and Synchronization Tuesday Poster Session 2

Speaker

Jangwon Kwon (Institute for Basic Science)

Description

RAON is a heavy-ion accelerator facility that delivers beams with various energies to experimental areas. To measure bunch lengths shorter than 1 ns, a 50 Ω-matched stripline fast Faraday cup (FFC) was developed. The FFC signal was amplified using a 4 GHz broadband amplifier with a gain of 42 dB and measured with an oscilloscope having a sampling rate of 25 GS/s and a bandwidth of 4 GHz. The developed FFC was installed in the straight section at the downstream end of SCL3 and in the KoBRA beamline. Bunch-length measurements were carried out using an Ar 9+ beam with a current of 40 μA and a pulse width of 100 μs. This poster presents the bunch-length measurement results obtained with the stripline fast Faraday cup at the downstream end of SCL3 and the KoBRA beamline.