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ATF studies ; Overview of availability of the drive beam lattices ; Improving the Generation of Random Numbers in PLACET
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Europe/Zurich
6/2-004 (CERN)
Participants: Yves, Daniel, Yngve, Kurt Artoos, Stephen, Jakob, Martin, Juergen, Andrea, Eirini, Dario, Bernard, Alexey D.
News:
The talks.
Some discussion occurred during Jakob's talk. Here the main points / actions :
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
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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?
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