IBIC2026 - 15th International Beam Instrumentation Conference

Preliminary design of the digital signal processing scheme for the CSNS-II RCS BPM electronics

WEP020

2 Sept 2026, 16:00

2h

Ballroom C (Whistler Conference Centre)

Poster Presentation MC03: Beam Position Monitors Wednesday Poster Session 3

Speaker

Chunjie Xie (Institute of High Energy Physics)

Description

The CSNS-II upgrade aims to further increase the RCS beam power from the presently achieved level of about 185 kW to 500 kW. Under the higher beam power, the RCS BPM electronics will face challenges due to the increased input signal voltage and the requirement for a larger dynamic range. To achieve both a wide dynamic range and high position resolution, a new BPM electronics system is being designed. For the digital signal processing, different position calculation methods were compared, including the integral method, RSS and the standard deviation method. The results indicate that, in our case, an ADC resolution higher than 14 bits is required when noise is taken into account. In addition, the standard deviation method shows better immunity to DC noise. Based on these results, a preliminary digital signal processing scheme was designed.