Open Access
Electron-Cloud Wake Fields
Giovanni Rumolo,Frank Zimmermann +1 more
- 20 Jun 2002
TL;DR: In this paper, the authors presented the wake fields simulated for the LHC beam in the CERN SPS and at injection into the HPC in different magnetic field configurations (field-free region, dipole, and solenoid), where the magnetic field affects both the electron motion during a bunch passage and the overall electron distribution in the beam pipe.
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Abstract: The electron cloud gives rise to coherent and incoherent single-bunch wake fields, both in the longitudinal and in the transverse direction, and to coherent coupled-bunch wakes. These wake fields can be computed using the simulation programs ECLOUD and HEADTAIL developed at CERN. We present the wake fields simulated for the LHC beam in the CERN SPS and at injection into the LHC in different magnetic field configurations (field-free region, dipole, and solenoid), where the magnetic field affects both the electron motion during a bunch passage and the overall electron distribution in the beam pipe.
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Citations
Review of single bunch instabilities driven by an electron cloud
TL;DR: In this article, the authors review the experimental evidence for, simulation approaches to, and analytical treatments of single-bunch two-stream instabilities caused by an electron cloud, which can also cause long-term emittance growth.
References
Practical User Guide for ECloud
Giovanni Rumolo,Frank Zimmermann +1 more
- 01 Jan 2003
TL;DR: In this article, the authors describe the use of the program ECloud for the simulation of the electron cloud build up, which occurs due to photoemission, ionization, and secondary emission inside an accelerator beam pipe during the passage of a narrowly spaced proton or positron bunch train.