Minutes of the IR FEL Beam Transport Meeting, December 12, 1996

Next Meeting: Thursday December 19, in Room 84, Trailer City at 1:30 P.M.

ATTENDEES: S. Benson, G. Biallas, C. Bohn, D. Douglas, E. Feldl, K. Jordan, J. Karn, W. Merz, M. Wiseman

Schedule Comments, Decisions and other Comments:

None

Action Items:

G. Biallas - Get the BT contracts signed. Contracts needed to be changed to new DIMAD configuration. No progress on contracts, but requirements documents for each project being worked on.

L. Dillon-Townes - Respond to recommendations of the Vacuum review, including differential pumping issue. Review scheduled for next Tuesday.

G. Biallas - Get recirculation dipoles designed by Northrop Grumman's V. Christina per the schedule. Optical Chicane Dipole at the 90 % level. Vinnie needs to incorporate the Mu Metal and Purcell gap.

G. Neil - Have cable tray layout complete by Oct. 21. Cable tray at the sign off level. Tray due before Christmas.

G. Biallas - Publish with W. Merz, the projected voltage and current on all magnets and define the hysteresis cycle. still need work on switching conditions on Injection/extraction dipoles and their Hysteresis cycle.

G. Biallas - Hold the Design Review on Monday, Nov. 18. Notches in gap didn't do much. Need to increase width of good field region or increase width of magnets. We are figuring out what to try next.

G. Biallas - Reestablish the basis for gaps on all dipoles. Caution, spread sheet has magnetic gap on injection dipoles (includes added dimension of Purcell gaps). In Process.

L. Dillon-Townes - Order the entire stock of required vacuum hardware (including bolts and gaskets) Promised by next Monday.

M. Wiseman - Order the right quantity of adjustment cartridges now that the stands are defined. In process. List now complete. Drawings of 3.5 inch version in process.

M. Wiseman - Design X Chamber that is straightforward to build by last week in November. Check prints need incorporation. Initial transition needs finalization with B. Yunn. Second check prints now in process. B. Yunn specified transition as around 2 inches.

C. Murray - Finalize injection line and final lattice on machine drawing. In process.

Group - Obtain 4 inch dia. quads for Recirculation Dump. G. Biallas to find if D. Walz has any extra Wrap-Around-Quads at SLAC. S. Benson will talk to D. Nguyen at Los Alamos

M. Wiseman - Design and order the Back Leg stands and girders in order to have material to install in March. Requirement document generated. F. Ellingsworth and J. Smith working on the task. Requires kick off meeting.

New Action Items :

G. Biallas - Check with RACON regarding brass activation

G. Biallas - Respond to the Cavity Production Group not providing cleaning resources.

Completed Action Items :

D. Kehne - Contact Robin Wines to get and evaluate beam spot sizes in the Recirculation Dump. Complete.

M. Wiseman - Add conductivity control valve to Dump LCW. Decided to go to all metal for enclosure installation. Complete.

New Action Items for the Vacuum Meeting:

None

Summary of Vacuum Meeting Review:

No Meeting this week

New Action Items from the Diagnostics/Commissioning Meeting:

K. Jordan - Freeze equipment assignment by end of December

Web Items:

C. Bohn - Get bunch lengths to the Web. A hot button needs to be established.