Present : Kiyoshi Kubo (KEK), Freddy Poirier (Desy), Dirk Kruecker (Desy), Nikolai Solyak (FNAL), Paul Lebrun (FNAL), David Urner (Oxford), Daniel Schulte (CERN)
Agenda and talks are available at
http://ilcagenda.linearcollider.org/conferenceDisplay.py?confId=2206
1. K. Kubo presented a draft version of his talk to next week meeting at FNAL (Sept 26), on the Main Linac Kickoff meeting
David Urner commented on the scope of the dynamic studies, which is quite large. Who does what, what is the expected time line for such a big job.? Who is tackling what? Kiyoshi responded that we are not ready yet to put names on particular aspects of these dynamics studies. Kiyoshi clarified, our group will not present names in the meeting next week. This will be discussed at the FNAL meeting ALCPG07 in October. (Comment by K.K. after mtg.: It is not very clear by when we make assignment. And it is not clear if expression of interest is expected in Kick Of Meeting. We should ask higher management and/or other group leaders.)
Daniel Schulte stressed the importance of proper matching of the undulator in the electron Linac. His attempt at Dispersion Free Steering through these matching section and the undulator itself were not successful. Freddy Poirier stated that some work has been done on this at ESY as well, but he was not familiar with the outcome,
2. K. Kubo briefly shared an e-mail message from Andrey Seryi, describing the list of taks for BDS. The document is available at the above Indico site. Opinions are most welcome. Nikolay commented that associated work pacakge description should also be given.
Daniel expressed a bit of surprise at the schedule of work package discussion, he thought most of the discussions and tentative assignment would be done at the ALCPG07 meeting, Fermilab, and not in the Kick Off Meetings. We should ask higher management and/or other group leaders.
3. K. Kubo also drafted an Alignment Model. Discussion:
- Is the 2 km distance primary reference points driven by shafts? Or smaller holes drilled specifically for GPS based alignment ?
The answer is probably yes, to both, as it could be site dependent.
- From David U. Will this change if LICAS is used? The feeling was that the constants in the model will change, but the basic principles will not.
- From P. Lebrun : Has this document been circulated to Alignment people? So far, only to the mailing list (which include some of alignment people). Consensus was that it must be send experts, and P.L. did send a copy to Rick Ford. Done. - From P. Lebrun: Why having untruncated Gaussian when doing the random walk, between primary reference points? One can always go back and check, as for any alignment task? To be discussed ...
4. Discussion of the dates for our face to face meeting at SLAC: Kiyoshi stated that nobody strongly complained about the week of December 10. He also noted that the week after, December 17, there will be two meetings in Japan, ATF2 and Damping Ring. It might be difficult for Europeans to travel back and forth. Yet, the current consensus is to have it on December 11 through 13, 2007.
5. Next Webex meeting, Tuesday, Oct 2. Kiyoshi requested technical talks. Please make suggestions. Freddy volunteered, and will contact Kiyoshi. Unfortunately, Paul Lebrun will not be able to make it, so someone else will have to write the minutes.
Recorded by Paul Lebrun.
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