CMAD: A Self-consistent Parallel Code to Simulate the Electron Cloud Build-up and Instabilities

Conference · Wed Nov 07 00:00:00 EST 2007

DOI:https://doi.org/10.1109/PAC.2007.4440517· OSTI ID:919411

Pivi, M T.F.

We present the features of CMAD, a newly developed self-consistent code which simulates both the electron cloud build-up and related beam instabilities. By means of parallel (Message Passing Interface - MPI) computation, the code tracks the beam in an existing (MAD-type) lattice and continuously resolves the interaction between the beam and the cloud at each element location, with different cloud distributions at each magnet location. The goal of CMAD is to simulate single- and coupled-bunch instability, allowing tune shift, dynamic aperture and frequency map analysis and the determination of the secondary electron yield instability threshold. The code is in its phase of development and benchmarking with existing codes. Preliminary results on benchmarking are presented in this paper.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 919411
• Report Number(s): SLAC-PUB-12970
• Conference Information: Contributed to Particle Accelerator Conference (PAC 07), Albuquerque, New Mexico, 25-29 Jun 2007
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
Accelerators
ACCPHY
APERTURES
CLOUDS
ELECTRONS
INSTABILITY
MAGNETS