Chapter 2. Beam Dynamics Design

2.1 Linac


2.1.1. Fundamental design

2.1.2 Ion Source, LEBT, RFQ

2.1.3 MEBT1, DTL, SDTL
2.1.3.1 MEBT1
2.1.3.1.1 Beam-line design
2.1.3.1.2 Chopper Design
2.1.3.1.3 Analysis on unstable particles
2.1.3.1.4 Buncher design
2.1.3.1.5 Analyzer line design
2.1.3.1.6 Upgrade with an anti-chopper
2.1.3.1.7 Beam dynamics simulation
2.1.3.2 DTL and SDTL
2.1.3.2.1 Introduction
2.1.3.2.2 Cell geometry
2.1.3.2.3 DTL tank parameters
2.1.3.2.4 Focusing design
2.1.3.2.5 Matching between the DTL and SDTL, and SDTL tank parameters
2.1.3.2.6 Beam loading of a chopped beam
2.1.3.2.7 Beam simulation
2.1.4 MEBT2, ACS
2.1.4.1 ACS
2.1.4.2 MEBT2
2.1.4.3 Simulation from the DTL to the ACS
2.1.5 BT to 3-GeV Ring
2.1.5.1 Overview
2.1.5.2 Design concept of L3BT sections
2.1.5.3 Beam collimation
2.1.5.4 Debuncher design
2.1.5.5 Beam simulation with space charge
2.1.6 Superconducting Linac and MEBT-3
2.1.6.1 Design Overview of the Superconducting Linac Section
2.1.6.2 Beam Simulation of the Superconducting Linac Section
2.1.6.3 Design of the MEBT-3 (Medium Energy Beam Transport-3)

2.2 3GeV Rapid-Cycling Synchrotron (RCS)


2.2.1 Introduction
2.2.2 Beam Optics Design
2.2.2.1 Introduction
2.2.2.2 Tunability and Structure Resonance
2.2.2.3 Closed orbit distortion and correction
2.2.2.4 Chromatic Behavior and Correction
2.2.2.5 Fringe field effects and Dynamic aperture
2.2.2.5.1 Motivation of study
2.2.2.5.2 Subject of the investigation
2.2.2.5.3 Dynamic aperture of the 3GeV RC-synchrotron
2.2.2.5.4 Conclusion
2.2.3 Injection, Beam Collimation and Extraction
2.2.3.1 Injection
2.2.3.1.1 Introduction
2.2.3.1.2 Parameters for painting injection
2.2.3.1.3 Design of the bump magnets system
2.2.3.1.3.1 Outline of the injection bump orbit
2.2.3.1.3.2 Fixed closed-orbit bump magnets at the injection period
2.2.3.1.3.3 Horizontal painting bump magnets
2.2.3.1.3.4 Vertical painting magnets
2.2.3.1.4 Design of the magnetic field
2.2.3.1.4.1 Magnetic Stripping of H- Ions
2.2.3.1.4.2 Fraction of excited H0
2.2.3.1.4.3 Trajectory of stripped electrons
2.2.3.1.4.4 b and tune Modulation by Bump Orbit
2.2.3.2 Beam Collimation
2.2.3.2.1 Overview
2.2.3.2.2 Collimator System Design
2.2.3.2.3 Simulation results
2.2.3.2.4 Conclusion
2.2.3.3 Extraction
2.2.3.3.1 Overall Design
2.2.3.3.2 Kicker Magnet Layout
2.2.3.3.3 Septum Magnet Layout
2.2.4 RF Acceleration
2.2.4.1 RF Voltage Program
2.2.4.2 Longitudinal emittance control
2.2.4.3 Beam loading
2.2.4.4 Beam loading compensation
2.2.4.5 Transient beam loading
2.2.5 Emittance Growth, Beam Instability
2.2.5.1 Introduction
2.2.5.2 Machine Model
2.2.5.3 Computer Simulation and Code Benchmarking
2.2.5.4 Physics of Emittance blow-up and Halo-formation
2.2.5.5 Beam Intensity and Tune
2.2.5.6 Conclusion
2.2.6 Beam Transport to Neutron and Muon Production Targets
2.2.6.1 Layout
2.2.6.2 Beam Optics
2.2.6.3 Distortion of Beam Orbit
2.2.6.4 Beam Loss
2.2.7 Beam Transport to 50-GeV Ring

2.3 50-GeV Main Ring


2.3.1 Introduction
2.3.2 Beam Optics Design
2.3.2.1 Basic Focusing Channel
2.3.2.2 Emittance and Acceptance
2.3.2.3 Tuning Knobs and its Optimization
2.3.2.4 COD Correction
2.3.2.5 Chromaticity Correction and Dynamic Aperture
2.3.2.6 Fringe fields and dynamic aperture of 50GeV MR
2.3.2.6.1 Analysis of the working point
2.3.2.6.2 Intrinsic sources of magnetic field non-linearities / Order of Map
2.3.2.6.3 Changing of the linear properties of MR and 'detuning' effects
2.3.2.6.4 Analysis of dynamic aperture
2.3.2.6.5 Conclusion
2.3.3 Injection, Beam Collimation
2.3.4 Fast Extraction
2.3.5 Slow Extraction
2.3.5.1 Introduction
2.3.5.2 Slow Extraction Scheme
2.3.5.3 Beam Loss Calculation at the ESS Wires
2.3.5.4 Concluding Remarks
2.3.6 RF Acceleration
2.3.6.1 RF Voltage Program
2.3.6.2 Emittance control
2.3.6.3 Longitudinal Beam Loading
2.3.6.4 Transient Beam Loading
2.3.7 Emittance Growth, Beam Instabity
2.3.7.1 Space charge effects
2.3.8 Electron Proton Two Stream Instability
2.3.8.1 Electron cloud build-up and e-p instability
2.3.8.2 Secondary Electron Emission from Metals and Graphites
2.3.8.2.1 Sample Materials
2.3.8.2.2 Experimental Set-up and the Conditions
2.3.8.2.3 Measurement of Secondary Electron Yields and Surface Analyses
2.3.8.2.4 Summary