CLIC TeamMAD-X Day, September 4, 2003 MAD-X for CLIC H. Braun, R. Corsini, T.d’Amico, A. Faus-Golfe, M. Korostelev, S. Redaelli, T. Risselada, D. Schulte,

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Presentation transcript:

CLIC TeamMAD-X Day, September 4, 2003 MAD-X for CLIC H. Braun, R. Corsini, T.d’Amico, A. Faus-Golfe, M. Korostelev, S. Redaelli, T. Risselada, D. Schulte, F. Tecker, and F. Zimmermann for the CLIC Team applications of MAD8 to CLIC & CTF3 minimum requirements for MAD-X desirable extensions

CLIC TeamMAD-X Day, September 4, 2003 CTF-3

CLIC TeamMAD-X Day, September 4, TeV CLIC

CLIC TeamMAD-X Day, September 4, 2003 Past and Present Applications of MAD8 to CLIC & CTF3 CTF-3 Linacs & Ring Combiner Rings -> Frascati Transfer Lines Beam Delivery (Final Focus & Collimation) Damping Rings Decelerator + Linacs

CLIC TeamMAD-X Day, September 4, 2003 Top Ten MAD modules TWISS MATCHING SURVEY TRACK EMIT DYNAP IBS EFIELD EALIGN CORRECT

CLIC TeamMAD-X Day, September 4, 2003 CTF-3 Prelim. Phase Linac (F. Tecker) CTF3 Preliminary Phase Linac. Lattice was optimized with MAD8. The acceleration is modelled by LCAVITY elements and extends from 4 to 350 MeV.

CLIC TeamMAD-X Day, September 4, 2003 Design of CTF-3 Combiner Rings see the Talk by C. Milardi

CLIC TeamMAD-X Day, September 4, 2003 CLIC IP Beam (S. Redaelli) Tracking through CLIC Beam Delivery at 3 TeV. MAD8 simulations include finite energy spread & synchrotron radiation.

CLIC TeamMAD-X Day, September 4, 2003 CERN-DESY-SLAC Code Comparison for the CLIC IP Beam (S. Redaelli) Without SR, MAD8 Y spot size is much larger than in MERLIN, PLACET and DIMAD. May PTC help!?

CLIC TeamMAD-X Day, September 4, 2003 Design of Bunch Compressor Chicanes for the CLIC Main Beam (T. d’Amico) matching & survey tracking (with wake fields & CSR desirable)

CLIC TeamMAD-X Day, September 4, 2003 Design of CLIC Drive-Beam Turn Around (T. d’Amico) optics matching & survey with MAD8

CLIC TeamMAD-X Day, September 4, 2003 CLIC Damping Ring (M. Korostelev) lattice damping time & equil. emittance

CLIC TeamMAD-X Day, September 4, 2003 IBS & DA Calculations for CLIC DR (M. Korostelev) emittance time evolution dynamic aperture lattice matching

CLIC TeamMAD-X Day, September 4, 2003 Damping Ring Design fully relies on MAD! Optics design Radiation damping Emittance evolution with IBS Tracking for Dynamic Aperture Resonance Compensation and Nonlinear Analysis for DA Optimization Error & Tolerance Analysis Closed-orbit corrections Optics corrections, emittance tuning, etc. (M. Korostelev)

CLIC TeamMAD-X Day, September 4, 2003 CLIC Beam Delivery with Collimation & Raimondi-Seryi Final Focus (T. Risselada, F. Zimmermann)

CLIC TeamMAD-X Day, September 4, 2003 CLIC Luminosity Performance (S. Redaelli, D. Schulte, F. Zimmermann)

CLIC TeamMAD-X Day, September 4, 2003 CLIC Beam Delivery Footprints (F. Zimmermann)

CLIC TeamMAD-X Day, September 4, 2003 Prototype Compact Final Focus for CTF-3 (F. Zimmermann)

CLIC TeamMAD-X Day, September 4, 2003 Nonlinear Collimation System (A. Faus-Golfe, F. Z.) RMAT & GLOBAL (formula) for matching [also needed for nonlinear SPS optics (A. F.-G.)]

CLIC TeamMAD-X Day, September 4, 2003 MAD is important for CLIC In the past, the design and on-line models of all components for CTF-3 and for the 3-TeV CLIC design have relied heavily on MAD8. We would like to have at least the MAD8 functionality maintained in MAD-X. This is not yet completely the case. Certain extensions would be welcome and are encouraged!

CLIC TeamMAD-X Day, September 4, 2003 MADX’ Positive Features: IBS is working fine Closed orbit correction considerably improved PTC will hopefully facilitate tracking and might aid in nonlinear optimization for DR and BDS

CLIC TeamMAD-X Day, September 4, 2003 The Scope of PTC? identify the main nonlinearities blowing up the IP spot size and facilitate their correction for the beam delivery system, identify the main nonlinearities blowing up the transverse emittances in the damping rings, combiner rings & bunch compressors, and again provide methods to correct them Our wish is to

CLIC TeamMAD-X Day, September 4, 2003 Some Urgent MAD-X Problems L-Cavity does not work with Twiss [needed for optics matching of all linacs including CTF-3 linac]; would like to re-establish late MAD8 functionality! Dipole end faces with Twiss cause discontinuity in beta function at dipole exit [for design of damping rings]; only a plotting problem?

CLIC TeamMAD-X Day, September 4, 2003 Plot of Damping-Ring Cell Optics (M. Korostelev) MAD8 MAD-X spline option without spline option bizzar discontinuities

CLIC TeamMAD-X Day, September 4, 2003 More Urgent MAD-X Problems RMAT & TMAT not working? [needed for any transfer line matching] re-establish late MAD8 functionality! GLOBAL not working. [needed for many matching applications] re-establish late MAD8 functionality!

CLIC TeamMAD-X Day, September 4, 2003 Many problems require specific tracking features, e.g., coherent synchrotron radiation, collimator wake fields, linac wakes, gas scattering, or collimator scattering. Another important group of beam-dynamics studies need integrated simulations including various beam-line segments, e.g., simulations from the Damping Ring to the IP. Specialized codes exist, e.g., for the beam-beam collision (GUINEA-PIG) or for multi-bunch linac tracking (PLACET). CLIC Special Requirements

CLIC TeamMAD-X Day, September 4, 2003 Data-exchange interface to allow fast data piping to and from user programs. For example, enabling user-defined coordinate transformations by external program for selected element classes. Suggested Extension It is unrealistic to believe that MAD-X module keepers or the MAD-X custodian will cover every possibility. Neither do we want to write our own MAD program for each study.

CLIC TeamMAD-X Day, September 4, 2003 Conclusions MAD8 is a valuable tool for CLIC studies. We expect MAD-X to follow this tradition and not to lose the contact to the lepton machines. We hope that a few minor requirements (LCAV, dipole end faces, RMAT, GLOBAL) can be resolved quickly. A communication interface for tracking will greatly enhance the reach of MAD-X simulations for CLIC. Popular user-written programs could later become integrated into the MAD-X core. LHC will profit from such a feature as well!

CLIC TeamMAD-X Day, September 4, 2003 Thanks to all members of the CLIC team! H. Braun, T. d’Amico, R. Corsini, A. Faus-Golfe, M. Korostelev, S. Redaelli, D. Schulte, and F. Tecker helped preparing this presentation.