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

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

3. 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)

4. 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

5. RFQ/DTL klystrons – tests at ESS Bilbao

6. 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

7. 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

8. High level plan

9. RF components in tunnel and gallery

10. The End