ALS-U AR RF Equipment Protection System

TL;DR

This paper details the design and implementation of a comprehensive RF equipment protection system for the Advanced Light Source Upgrade's Accumulator Ring, integrating fast and slow interlock mechanisms for equipment safety.

Contribution

It introduces a novel integrated protection system combining FPGA-based fast interlocks with PLC-based slow controls for AR RF equipment.

Findings

Successful integration of FPGA and PLC systems for RF protection

Real-time fast interlock response within microseconds

Enhanced safety and reliability of RF equipment

Abstract

This paper presents the design and status of Accumulator Ring (AR) RF Equipment Protection System (EPS) of Advanced Light Source Upgrade project at LBNL. The key components of AR RF EPS include a Master Interlock PLC subsystem handling supervisory control and slow interlocks in \SI{}{\milli\second} scale, an FPGA-based LLRF Controller managing fast interlocks in \SI{}{\micro\second} scale, a 60 kW high-power amplifier with standalone PLC-based slow (\SI{}{\milli\second} scale) and FPGA-based fast (\SI{}{\micro\second} scale) protection systems, and an RF Drive Control Chassis acting as primary RF mitigation device. The design of AR RF EPS is presented along with internal RF and external AR subsystems interfaces.