Simulations of electron cloud build-up and saturation in the APS.

Conference · Thu Jun 13 00:00:00 EDT 2002

OSTI ID:795849

Harkay, K; Rosenberg, R; Furman, M; Pivi, M

In studies with positron beams in the Advanced Photon Source, a dramatic amplification was observed in the electron cloud for certain bunch current and bunch spacings. In modeling presented previously, we found qualitative agreement with the observed beam-induced multipacting condition, provided reasonable values were chosen for the secondary electron yield parameters, including the energy distribution. In this paper, we model and discuss the build-up and saturation process observed over long bunch trains at the resonance condition. Understanding this saturation mechanism in more detail may have implications for predicting electron cloud amplification, multipacting, and instabilities in future rings.

• Research Organization: Argonne National Lab., IL (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 795849
• Report Number(s): ANL/ASD/CP-107954; TRN: US0201617
• Resource Relation: Conference: Mini-Workshop on Electron-Cloud Simulations for Proton and Positron Beams (ECLOUD 02), Geneva (CH), 04/15/2002--04/18/2002; Other Information: PBD: 13 Jun 2002
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ADVANCED PHOTON SOURCE
AMPLIFICATION
CLOUDS
ELECTRONS
ENERGY SPECTRA
POSITRON BEAMS
PROTONS
RESONANCE
SATURATION