Introduction CDR Normal Conducting Linac LLRF Anders Sunesson RF group leader European Spallation Source ERIC 20190115

Welcome! Agenda Charge Normal Conducting Linac LLRF Control and regulation of phase and amplitude for RFQ Bunchers DTL

RF Systems RF systems contains two work packages: RF systems provide Power Converters RF systems provide The RF power to accelerate the particles The power converters to generate the high power RF The power converters for the magnets in the superconducting linac except the raster magnets All major components are designed and in most cases ordered, except high beta modulators, high beta klystrons, and Spoke RF stations (contract awarded but not yet signed, design not finalised)

RF Systems Scope RF systems section: Power Converters section: RF distribution systems High Power Amplifiers (e.g. klystrons) and auxiliary systems LLRF systems Interlock systems Master Oscillator and Phase reference distribution Power Converters section: HV modulators Spoke RF transmitters Magnet Power Converters

RFQ/DTL klystrons – tests at ESS Bilbao

High Level Schedule –RF systems 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Global & Project MS First Installations Isrc to DTL1 RBOT Start user program Isrc to DTL4 BOT NC RF systems Test/Commissioning completed Start Phase reference distribution Phase reference tested to dog-leg Start installation Spoke RF Tests completed Start installation Medium/High b RF Start installation Medium b High b

RF systems Schedule and goals 2019 Top accelerator goal: Beam through RFQ (MEBT, DTL1) during 2019 A lot to accomplish during 2019 to achieve this goal LLRF is a key component

High level plan

RF components in tunnel and gallery

The End