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CLIC Start-to-end Simulations

CLIC Start-to-end Simulations. Andrea Latina, CERN AWLC - May 13 2014 - Fermilab. Contents. Start-to-end simulations Review of main simulation c odes Some results obtained in the past Work to be done. Start-to-end simulations.

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CLIC Start-to-end Simulations

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  1. CLIC Start-to-end Simulations Andrea Latina, CERN AWLC - May 13 2014 - Fermilab

  2. Contents • Start-to-end simulations • Review of main simulation codes • Some results obtained in the past • Work to be done

  3. Start-to-end simulations • Perform as-realistic-as-possible simulations, to assess performance and evaluate tolerances • Ensure low emittance transport throughout the machine under the effects of static and dynamic imperfections • Test mitigation techniques • Simulate operational scenarios and failures • Perform integrated luminosity studies

  4. CLIC layout @ 3 TeV

  5. Static Imperfections and emittance budget RTML ML

  6. Some of the main tools • SIRE: Intra-beam scattering • Damping ring • MAD-X / PTC • Lattice design • Damping ring tracking simulations • PLACET • Main beam / drive beam • + BDSIM • + HTGEN • GUINEA-PIG • Beam-beam • Machine detector interface; Luminosity measurement • RF Structure Library • Rebaselining

  7. Code benchmarking

  8. Main CLIC beam dynamics S2E simulations tools • PLACET: • Full 6d tracking • Incoherent Synchrotron radiation in all magnets • Coherent Synchrotron radiation in bends • Single-bunch wakefields, L and T, in RF structures and collimators • Long-range wakefields in RF structures • Static/dynamic errors • Ground motion; including realistic stabilization systems • Halo generation and transport • CLIC Drive beam • Octave/Python interface for complex simulation scenarios / customization • Optimized for speed; supports openMP and MPI • Accepts solenoid field-maps for MDI studies • PLACET+BDSIM: • PLACET tracking w/Halo + BDSIM secondary particles generation • PLACET + GUINEA-PIG: • PLACET tracking + GUINEA-PIG beam-beam

  9. Some of the work performed in the past As extensively documented in the CDR and subsequent CLIC-Notesand proceedings • Tracking through RTML + ML +BDS + IP • Perfect machine • Beam transport and integrated luminosity studies • RTML: transport, feed-forward correction schemes • ML: BBA; dynamic imperfections, feedback loops • ML+BDS: BBA, dynamic imperfections, stabilization system, feedback • BDS+IP: tuning, machine detector interface • Drive Beam beam dynamics • ILC: • Benchmark of results • Original studies: BBA in ML and RTML, tuning knobs • Impact of couplers in ML and RTML

  10. ML final emittance growth

  11. Structure alignment using wakefield monitors

  12. Work that has to be done • BBA throughout RTML subsystems, ML and crosstalk, longitudinal phase-space correlations (BC to ML) • Drive beam: • Transport (in progress) • Simulation of Drive Beam recombination scheme (in progress) • To extend PLACET • Two-sided simulations • Simulate BBA and integrated tuning studies using realistic diagnostic signals • Inject “realistic” distribution from the damping rings • Experimental tests of simulated components (e.g. wakefields), or entire algorithms (e.g. BBA)

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