Participants: Yves, Daniel, Yngve, Kurt Artoos, Stephen, Jakob, Martin, Juergen, Andrea, Eirini, Dario, Bernard, Alexey D.

News:

• Daniel: Steering committee : there is a linear collider workshop in Japan, November 11-15. We have to be present. But not yet decided what our contribution would be. Probably on luminosity preservation issues and technical system related (BDS, Rings)
• New agreement with Shandong University: new student coming in the future to work on RTML. Another student from Turkey working on injector issues.

The talks. 

Some discussion occurred during Jakob's talk. Here the main points / actions :

• Satellite cleaning is missing
• Need to study the impact of the phase shifter on the beam loading
• Roberto should have lattice files for gun and DB linac - Jakob should try to get them
  • "a" version exist on the CLICSIM repository. Need to verify its contents
  • Piotr might have an updated version of such lattice files
• Chain of Bunch Compressors: so far BCs in the Drive Beam are just matrices. And do not really seem correct. (Avni provided these matrices). Can Erik help?
• Combiner rings and delay loop:
  • lattices also need to be checked (need for vertical bends / vertical doglegs?)
  • emittance preservation in the combiner rings must be assessed
• Turnaround and feed-forward :
  • "PLACET translation of same lattice becomes unstable under same matching conditions."  Andrea will help Jakob understanding what happens
• What about vibrations by the beam dumps? Need to be simulated? Find someone to do it 
• Timing system / phasing system : still an open issue. It might require one person working on it
• Vibrations induced by PETS? Are they an issue? Need to be simulated?