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New Features of OPERA 12 John Simkin Vector Fields Limited Magnet Workshop, PAC07 Albuquerque

New Features of OPERA 12 John Simkin Vector Fields Limited Magnet Workshop, PAC07 Albuquerque. Vector Fields Limited A Cobham Group Company. Introduction. Improvements in OPERA 12 Useability – updated dialogs and sketching facilities Extended modelling functions Parametric modelling

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New Features of OPERA 12 John Simkin Vector Fields Limited Magnet Workshop, PAC07 Albuquerque

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  1. New Features of OPERA 12 John Simkin Vector Fields Limited Magnet Workshop, PAC07 Albuquerque Vector Fields Limited A Cobham Group Company

  2. Introduction • Improvements in OPERA 12 • Useability – updated dialogs and sketching facilities • Extended modelling functions • Parametric modelling • New dialogs for defining Scala emitters • New Features of OPERA 12 • Optimisation • Secondary emission in Scala • Lossy dielectrics – the other quasi static limit • Coupled to Scala

  3. Improvements in OPERA 12 • Useability Sketching 3D objects Extended and updated dialogs

  4. Improvements in OPERA 12 • Extended Modelling functions • Curved Surface options swept offset Picked face

  5. Polygon sketching – non planar covering

  6. Improvements in OPERA 12 • Parametric Modelling • Model Dimension Variables All dimensions can be entered as variables The full history of the model construction can be edited and replayed

  7. Parametric Modelling • Updating the dimension variables The new dimensions are implemented by pressing replay

  8. Improvements in OPERA 12 • New dialogs for defining Scala emitters

  9. New Features of OPERA 12 • Optimisation • Searches for Pareto optimal solutions • Competing objective functions • Identifies the set of results on the optimal front • Minimises number of function evaluations • Design of experiments • Interpolates in Objective function space • Uses stochastic (global) and descent (local) methods • Refines its knowledge of the objective function space as the optimisation converges

  10. Optimisation • Variables – model dimension variables

  11. Optimisation • Objective functions

  12. Optimisation • Constraints

  13. Optimisation • Options

  14. Optimisation • Advanced features • Multiple solution objective functions • Eg. Homogeneity at a set of field levels • Post processing macro (command script) • Any objective functions that can be calculated • Modeller macro (command script) • Eg. Move parts of the model to evaluate multiple objective functions that depend on position

  15. New Features of OPERA 12 • Secondary emission • Multiple emission definitions for any surface • Backscattered – reflection of the input particle type • Secondary – links input and output particle types • Basic emission definitions • Simple reflection with energy loss • True secondaries, Cos() distribution, mean energy • Advanced emission definitions • User defined functional energy and spatial variation • System variables – Energy, direction, type

  16. Primary and secondary beamlets

  17. Secondary emission • Basic backscattered

  18. Secondary emission types • True secondary

  19. Secondary emission types • Advanced true secondary

  20. New Features of OPERA 12 • Lossy dielectric (in 3D) • Quasi static Electric fields in conducting dielectrics J = dD/dt D = 0 • Version 12.0 – The steady state solution • Version 12.x – The transient and AC solutions • Application - Stress control insulation and …. • Coupled to SCALA in Version 12 • To model charging of metal and dielectric bodies Driven by currents from the particle beams

  21. Conclusion • Version 12 implementations • 32 and 64 bit Windows versions (XP, Vista etc) • Only money (Memory & Microsoft) limit model size • 64 bit Linux • 64 bit Solaris • Quench – to be presented tomorrow

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