Zgoubi day 2009 David Kelliher ASTeC/RAL/STFC UKNF WP1 09/12/09

Acknowledgment Thanks to François Méot for providing the presentations and thanks to the presenters

EMMA

Zgoubi and EMMA Zgoubi chosen to serve as a Virtual accelerator in the online model of EMMA Why Zgoubi? Handles a wide variety of magnets (analytic models and field maps) Doesn’t assume a reference orbit (unlike MAD) Python interface has increased user-friendliness of code Author is available to help and has modelled EMMA Growing skillbase in UK

Code Comparison B. Muratori

7 S. Machida

EpicsZgoubi – Implementation EpicsZgoubi – C++ Windows Console Application Zgoubi pyZgoubi EPICS Channel Access EPICS R Portable CAS Virtual Accelerator (Python Script) Input FileOutput File XML Configuration File EPICS Clients Defines Process Variables exposed by the interface Location to write PV data into the output file Location to read PV data from the input file Which application to run when output data changes Coded into the core application Coded into the core application, but configurable via XML External and configurable via XML G. Cox

Y. Giboudot

Tune calculation using DA map Y. Giboudot

3D field tracking Why 3D tracking ? (1)Field coupling between BF and BD is non-linear (2)Fringing field is major part in a thin magnet (3) Field distribution is not that of ideal quadrupole (especially in outer region) QD QF Magnet center ABCD AB CD **Fields are calculated with OPERA/3D T. Yokoi

Pyzgoubi

S. Tygier

E. Keil – Lessons of Zgoubi day

Code development

S. Sheehy

D. Kelliher – DIPOLEC

H. Witte

Zgoubi/Pyzgoubi plans Readable output file will be output by Zgoubi Pyzgoubi will take SI units rather than “Zgoubi” units Upgrade of Pyzgoubi to allow lattice subsets to be put together as needed Double-helix coil field map being implemented