Filling in the Roadmap for Self-Consistent Electron Cloud and Gas Modeling
Electron clouds and gas pressure rise limit the performance of many major accelerators. A multi-laboratory effort to understand the underlying physics via the combined application of experiment, theory, and simulation is underway. We present here the status of the simulation capability development, based on a merge of the three-dimensional parallel Particle-In-Cell (PIC) accelerator code WARP and the electron cloud code POSINST, with additional functionalities. The development of the new capability follows a ''roadmap'' describing the different functional modules, and their inter-relationships, that are ultimately needed to reach self-consistency. Newly developed functionalities include a novel particle mover bridging the time scales between electron and ion motion, a module to generate neutrals desorbed by beam ion impacts at the wall, and a module to track impact ionization of the gas by beam ions or electrons. Example applications of the new capability to the modeling of electron effects in the High Current Experiment (HCX) are given.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 885379
- Report Number(s):
- UCRL-PROC-216104; TRN: US0603879
- Resource Relation:
- Conference: Presented at: Particle Accelerator Conference, Knoxville, TN, United States, May 16 - May 20, 2005
- Country of Publication:
- United States
- Language:
- English
Similar Records
New simulation capabilities of electron clouds in ion beams withlarge tune depression
New simulation capabilities of electron clouds in ion beams with large tune depression