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TRIUMF LLRF Control System Upgrade |
LLRF, controls, hardware, cavity |
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- X.L. Fu, T. Au, K. Fong, Q. Zheng
TRIUMF, Vancouver, Canada
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The LLRF system for Transfer line from Drift Tube LINAC(DTL) to Superconducting Linac (SCB) (DSB) was an analog-digital hybrid system running at 35.36MHz. The system controls the amplitude/phase and tuning for a buncher cavity on the beamline. During the 2022 October shutdown, the system is upgraded to a new fully-digital LLRF system. The new digital LLRF system is based on TRIUMF’s universal LLRF hardware with a new firmware. Instead of using a VXI crate, the new system adopts a NIM bin and uses USB communication with the local control PC. The amplitude/phase regulation is implemented in the FPGA firmware, and the tuning loop is implemented in the PC software, but driven by the FPGA. The Debian 11 linux OS is running on ARM CPU, and the new digital LLRF system works as a standard window HID device. The linux OS allows the firmware be updated in-situ using Ethernet communication. The detailed design is described in this paper.
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Poster MOPO015 [6.084 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO015
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| About • |
Received ※ 02 December 2022 — Revised ※ 11 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 19 February 2023 |
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