by Staff Writers
Berlin, Germany (SPX) Jan 25, 2016
In a storage ring like BESSY II electrons circulate nearly with the speed of light passing complex magnetic structures. These magnets guide the electron beam and focus it on the ideal orbit. They are comparable to optical lenses which focus the light. To evaluate the stability of the electron trajectories in the magnetic fields, several thousands of turns need to be simulated.
After each revolution the trajectories are slightly different, passing the magnets at slightly different positions. These combined and complex orbit and field calculations require a precise algorithm which could easily result in time consuming simulations.
Already in 2011, a team out of the HZB undulator group and of the HZB-institute of accelerator physics has published a first paper of a new simulation algorithm , which drastically speeds up the simulation time for trajectories in complex undulator fields.
This simulation routine was implemented into the public domain code "elegant" of the Advanced Photon source / Argonne, and it is available, worldwide.
Now, the young scientist Malte Titze together with the senior scientists Johannes Bahrdt and Godehard Wustefeld could extend this method to another important class of three dimensional magnets: multipoles such as quadrupoles or sextupoles.
"The paper demonstrates, that this method yields very precise results, particularly within the fast changing fringing fields of the magnets", Malte Titze explains. He is now engaged in research activities at CERN.
"Such simulation methods are of great interest for future light sources, especially for diffraction limited storage rings, which may include combined function magnets and exhibit significant cross talking between neighboring magnets" comments Johannes Bahrdt. "This is of clear relevance for a successor of BESSY II".
The scientists describe their methods in the renowned journal of Physical Review Special Topics Accelerator and Beams.
Helmholtz-Zentrum Berlin fur Materialien und Energie
Understanding Time and Space
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement|