Minutes of the CLIC Meeting - 6 June 2007
Agenda: |
Electron Cloud Effects in the CLIC Damping Rings |
Speaker: |
Giovanni Rumolo and Warner Bruns |
Abstract
The electron cloud is potentially a limiting factor for
the beam intensity in the positron damping ring for CLIC. A study of
electron cloud build up in the damping ring bending magnets and
wigglers has been undertaken using the newly developed code Faktor2.
Geometries with and without ante-chamber have been simulated and
different ranges of photo-emission yields as well as secondary emission
yields have been explored.
Using the output of the build up simulations, instability simulations
using the HEADTAIL code have been then used to assess the possible
detrimental effect of the electron cloud on the beam. The instability
thresholds found through this study show that the present parameters
could be already in an unstable region.
copy of Giovanni's transparencies (pdf format)