1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

High precision RF pulse shaping with direct RF sampling for future linear accelerators

THPS140
5 Jun 2025, 15:30
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC6.T27 Low Level RF Thursday Poster Session

Speaker

Chao Liu (SLAC National Accelerator Laboratory)

Description

In various of particle accelerator designs, amplitude and phase modulation methods are commonly applied to shape the RF pulses for implementing pulse compressors or compensating for the fluctuations introduced by the high-power RF components and beam loading effects. The phase modulations are typically implemented with additional phase shifters that requires drive or control electronics. With our recent next generation LLRF (NG-LLRF) platform developed based on the direct RF sampling technology of RF system-on-chip (RFSoC) devices, the RF pulse shaping can be realized without the analogue phase shifters, which can significantly simplify the system architecture. We performed a range of high-power experiments in C-band for evaluating the RF pulse shaping capabilities of the NG-LLRF system at different stages of the RF circuits. In this paper, the high-power characterization results with the Cool Copper Collider structure driven by RF pulses with different modulation schemes will be described. With the pulse modulation and demodulation completely implemented in digital domain, the RF pulse shaping schemes can be rapidly adapted for X-band structures just by adding analogue mixers.

Region represented America
Paper preparation format LaTeX

Author

Chao Liu (SLAC National Accelerator Laboratory)

Co-authors

Ankur Dhar (SLAC National Accelerator Laboratory) Emilio Nanni (SLAC National Accelerator Laboratory) Larry Ruckman (SLAC National Accelerator Laboratory) Ryan Herbst (SLAC National Accelerator Laboratory)

Presentation materials

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