This project has received funding from the European Union’s Horizon 2020 Research and Innovation programme under Grant Agreement No 730871. Comprehensive simulations of distortions and Comprehensive simulations of distortions and their mitigations related to measurements their mitigations related to measurements with ionisation profile monitors with ionisation profile monitors 1st ARIES Annual Meeting 1st ARIES Annual Meeting Dominik Vilsmeier / GSI Dominik Vilsmeier / GSI Riga Tech. Univ., Latvia Riga Tech. Univ., Latvia May 24th, 2018 May 24th, 2018 1
Preface Preface Beam Gas Ionization Monitor installed at LHC (CERN) Profile broadening compared to Wire Scanner data M. Sapinski et al 2012 "The first experience with LHC Beam Gas Ionization Monitor" Proc. IBIC2012 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 2
Profile broadening - why? Profile broadening - why? 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 3
Profile broadening - why? Profile broadening - why? Effects related to MCP Distortion of electron trajectories Optical point-spread due to beam space charge function Distortion due to electron gyroradius 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 4
Simulations Simulations PyECLOUD Available (electron cloud studies) 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 5
Simulations Simulations PyECLOUD Available (electron cloud studies) PyECLOUD-BGI Upgrade (electron Adaption movement in IPM) for IPM 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 6
Workshop @ CERN | 2016 Workshop @ CERN | 2016 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 7
Workshop @ CERN | 2016 Workshop @ CERN | 2016 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 8
Workshop @ CERN | 2016 Workshop @ CERN | 2016 Design of electrodes for new devices Simulation of field configuration for removing electron cloud from the device volume Simulation of profile distortion 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 9
Workshop @ CERN | 2016 Workshop @ CERN | 2016 Design of electrodes for new Simulation code involving devices ionization and transport of Simulation of field configuration electrons in realistic fields for removing electron cloud from Code base with core developers the device volume Infrastructure for code Simulation of profile distortion maintenance and user support 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 10
Simulation codes Simulation codes Various programs / scripts: Combine the effort and create a common tool different applications (LINAC, Synchrotron, ...) → suitable for all different use different solutions cases 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 11
Code modularity Code modularity Simulation 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 12
Code modularity Code modularity Single and double Initial ionization cross sections velocities Gas jet velocity Simulation 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 13
Code modularity Code modularity Single and double Initial Guiding ionization cross sections velocities fields Gas jet velocity Uniform fields Simulation Two and three dim. CST field maps 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 14
Code modularity Code modularity Single and double Initial Guiding ionization cross sections velocities fields Gas jet velocity Uniform fields Simulation Two and three dim. CST field maps Analytic formulations Beam Numerical solvers fields Both two and three dim. 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 15
Code modularity Code modularity Single and double Initial Guiding ionization cross sections velocities fields Gas jet velocity Varying in computational Uniform fields Simulation complexity as well as Two and three dim. numerical accuracy CST field maps Analytic formulations Particle Beam Numerical solvers tracking fields Both two and three dim. 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 16
Sponsored Workshop @ GSI | 2017 Workshop @ GSI | 2017 by 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 17
Sponsored Workshop @ GSI | 2017 Workshop @ GSI | 2017 by 33 participants 13 institues 9 countries BINP BINP 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 18
Sponsored Workshop @ GSI | 2017 Workshop @ GSI | 2017 by Compilation of IPM realization Operational issues Simulation code innovation 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 19
Sponsored Workshop @ GSI | 2017 Workshop @ GSI | 2017 by Present the new simulation Compilation of IPM tool realization Collect feedback from the Operational issues community Simulation code innovation 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 20
Sponsored Workshop @ GSI | 2017 Workshop @ GSI | 2017 by Present the new simulation Compilation of IPM tool realization Collect feedback from the Operational issues community Simulation code innovation Discuss new use cases and applications Investigate corresponding models 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 21
Sponsored Workshop @ GSI | 2017 Workshop @ GSI | 2017 by Present the new simulation Compilation of IPM tool realization Collect feedback from the Operational issues community Simulation code innovation Benchmark simulation Discuss new use cases and against each other applications Perform measurements for Investigate corresponding comparison with data models 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 22
Virtual-IPM Virtual-IPM Emphasis on flexibility and Acts as framework as well as extensibility stand-alone application Covers a broad range of Suitable for developers and use cases users https://pypi.org/project/virtual-ipm https://gitlab.com/IPMsim/Virtual-IPM 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 23
Virtual-IPM Virtual-IPM Emphasis on flexibility and Acts as framework as well as extensibility stand-alone application Covers a broad range of Suitable for developers and use cases users $ pip install virtual-ipm # Easy installation https://pypi.org/project/virtual-ipm https://gitlab.com/IPMsim/Virtual-IPM 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 24
Graphical User Interface Graphical User Interface <?xml version="1.0" ?> <Virtual-IPM version="1.2.2"> <Beams> <Beam> <Parameters> <Energy unit="TeV">6.5</Energy> <BunchPopulation>2.1e+11</BunchPopulation> <ParticleType> <ChargeNumber>1</ChargeNumber> <RestEnergy unit="MeV"> %(proton mass energy equivalent in MeV) </RestEnergy> </ParticleType> </Parameters> 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 25
Graphical User Interface Graphical User Interface <?xml version="1.0" ?> <Virtual-IPM version="1.2.2"> <Beams> <Beam> <Parameters> <Energy unit="TeV">6.5</Energy> <BunchPopulation>2.1e+11</BunchPopulation> <ParticleType> <ChargeNumber>1</ChargeNumber> <RestEnergy unit="MeV"> %(proton mass energy equivalent in MeV) </RestEnergy> </ParticleType> </Parameters> 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 26
Use cases Use cases 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 27
Use cases Use cases IPM Profile distortion IPM Profile distortion Guiding field non-uniformities IPM Profile "rectification", e.g. Beam space-charge interaction through device upgrades or Influence of ionization momenta software based solutions 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 28
Use cases Use cases IPM Profile distortion IPM Profile distortion Guiding field non-uniformities IPM Profile "rectification", e.g. Beam space-charge interaction through device upgrades or Influence of ionization momenta software based solutions IPM Design IPM Design Field cage design Magnetic field strength required for suppressing distortions 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 29
Use cases Use cases IPM Profile distortion IPM Profile distortion Guiding field non-uniformities IPM Profile "rectification", e.g. Beam space-charge interaction through device upgrades or Influence of ionization momenta software based solutions IPM Design IPM Design BIF space-charge effects BIF space-charge effects Field cage design Excited ions move under the Magnetic field strength required influence of beam fields for suppressing distortions Gas jet velocity is retained by ions 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 30
PS IPM Design PS IPM Design Energy 25 GeV Bunch pop. 1.33e11 Bunch size 3.7 x 1.4 mm - length (4σ) 3.0 ns Profile distortion cannot be sufficiently suppressed by electric field 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 31
PS IPM Design PS IPM Design Energy 25 GeV Bunch pop. 1.33e11 Bunch size 3.7 x 1.4 mm - length (4σ) 3.0 ns Profile distortion cannot be sufficiently suppressed by electric field Confirming the requirement for a magnetic guiding field 1st ARIES Annual Meeting, May 24th 2018, D. Vilsmeier 32
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