Minutes of the IR FEL Beam Transport Meeting, August 1, 1996

Meetings are held in Room 84, Trailer City on Thursday at 1:30 P.M.

ATTENDEES: S. Benson, G. Biallas, L. Dillon-Townes, K. Jordan, J. Karn, G. Krafft, R. Legg, C. Murray, M. Wiseman

Decisions/Comments:

The commissioning review recommended that the first cryomodule double its power during commissioning. If adopted, this will up the requirements for the straight ahead dump.

Action Items:

L. Dillon-Townes/C. Murray/B. Yunn - Maintain latest layout/ define the vacuum tube at all discontinuities, refine impedance analyses and write the Tech. Note. Definition of discontinuities half finished and the list is about complete.

G. Biallas - Get the BT contracts signed. Contracts needed to be changed to new DIMAD configuration. No action.

A. Guerra - Start definition of a girder for the wiggler, diagnostics and quad telescopes that maintains position of the elements within 50 µm (0.002 in.) during change-out of the wiggler. No news.

G. Biallas/L. Harwood - Provide a good value for field enhancement factor for the style of magnets we are anticipating. Verify the K value of 0.45 that D. Douglas uses in his optics calculations. The Prototype dipole should be in by Aug. 5.

G. Biallas - Examine the categories on the Web and propose alterations. Some progress on the Injector Test Stand, web Titles. Given to Donna for posting.

J. Karn - Test a Prototype Sparse Lamination Quad. First test of Quad is complete.

M. Wiseman - Thermal analysis of the 45 MeV Dump for 30 kW & beam scraper analysis for 45, 79 and 200 MeV. No news.

R. Legg - Check D. Douglas' numbers on the new DIMAD. Started

C. Bohn - Determine the position of the beam scrapers by September 18.

C. Bohn - revisit the decision to install auto-steer.

D. Douglas - Determine the diagnostics needed in the Injection Line.New Action Items :

None

New Action Items for the Vacuum Meeting:

None

Summary of Minutes from July 31, 1996 Vacuum Meeting

None

New Action Items from the Diagnostics/Commissioning Meeting:

None

Completed Action Items:

R. Legg - Determine what is the best method of bending pulsed beam into the dump during cryomodule phasing. L. Harwood suggests treating the cavities in pairs an back phasing the second cavity to balance the first. The phasing would be complete by flipping the phase on the back phased cavity by 180°, a relatively accurate adjustment. Complete.

Reports for Aug. 6, 1996

G. Biallas

The Optical Chicane dipoles were detailed by Vinnie at Northrop Grumman.

The copper conductor for large dipole strings was ordered, delivery of the first reel is 7 weeks ARO.