A New Method for Compensation and Rematch of Cavity Failure in C-ADS Linac

TL;DR

This paper introduces a novel FPGA-based method for rapid compensation and rematch of cavity failures in C-ADS linacs, aiming to enhance fault tolerance and minimize beam loss.

Contribution

It presents an innovative FPGA-based approach with genetic algorithm optimization for cavity failure compensation, improving response speed and reliability.

Findings

FPGA-based model achieves high precision compared to TRACEWIN simulations

Genetic algorithm effectively optimizes the FPGA model parameters

Proposed method reduces recovery time and enhances fault tolerance

Abstract

For proton linear accelerators used in applications such as accelerator-driven systems, due to the nature of the operation, it is essential for the beam failure rate to be several orders of magnitude lower than usual performance of similar accelerators. A fault-tolerant mechanism should be mandatorily imposed in order to maintain short recovery time, high uptime and extremely low frequency of beam loss. This paper proposes an innovative and challenging way for compensation and rematch of cavity failure using fast electronic devices and Field Programmable Gate Arrays (FPGAs) instead of embedded computers to complete the computation of beam dynamics. A method of building an equivalent model for the FPGA, with optimization using a genetic algorithm, is shown. Results based on the model and algorithm are compared with TRACEWIN simulation to show the precision and correctness of the mechanism.