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Project Progress Summary

5 September 1990

Injector and Front-End Test

-Waveguide connections to the first HPA have been done and klystrons are being installed.

-Plumbing for injector service building has been installed. LCW system operational.

-The approach has been defined for cryomodule installation sequence. First cryomodule slated to be installed by 7 September.

-Injector girder has been surveyed and bolted to floor.

-The grouting of the stands for the injector elements of the front-end test was completed.

-The grouting of the stands for the injector elements of the front-end test was completed.

-Conduit for the safety system has been finished. Many of the support elements are also installed: key box, status lights, card readers, door switches.

WBS 1

-John Brawley successfully welded an rf window frame. The weld parameters program works fine.

-The cryomodule is scheduled to be installed in the tunnel 6 September.

-The sixth cavity pair has been turned over to the cryounit assembly area. This will complete the cavities needed for the next full cryomodule.

-The acid transfer system for the on-line chem room is being commissioned.

-850 niobium disks for cavities have been inspected and meet specifications.

-The ¼ cryomodule is installed in the Test Cave; testing begins the week of 10 September.

WBS 2

-All magnets required for the FET were received.

-The preliminary requirements drawing and specification for the injector and linac tunnel water system was given to Plant Engineering for them to create a bid drawing.

-Installation of the injector service building water system neared completion.

-The survey group continued work on the skeleton traverse of the entire tunnel and fiducialized the quarter-cryomodule.

-The design for the FET spectrometer was approved.

-The spreader/recombiner dipole procurement package was issued to vendors.

-The conceptual method of accurately mounting the BPMs to the quads in the arcs using a captured pilot portion of the beam pipe was resolved and a verification program initiated.

WBS 3

RF Controls:

• Sent preliminary spec out for master oscillator.
• Prototype arc detector tested on cryomodule.
• Received first lot of 2.5-watt amplifiers.

RF Power:

• Now have 41 klystrons from Varian. Returned #30 – it appeared to have been dropped in shipment.
• The circulator problem was the circulator waster load matching. The had added a matching disk to the feed line; it will be redesigned for higher power rating.
• HPAs and power supplies installed in injector service building. First four klystrons and waveguide parts installed in the first HPA.
• LCW manifold for the injector 95% complete. Got water 4 September.

WBS 4

-Finished WBS 1 cable pull.

-Completed AC power wiring for first HPA unit.

-Ordered transformers and breaker panels for east arc service buildings through E-6.

-Received six more utility chassis for use in FET trim system for a total of seven on hand.

WBS 5

Diagnostics:

• Boards for 100 megahertz FET BPMs ordered.
• Line drive prototype design tested.
• Current to voltage converter design tested.

WBS 6

-Hall C support structure RFP expected to be issued 7 September.

-Hall C dipole RFP expected to be issued 11 September.

-Four bids received 12 July for CLAS torus (Hall B), preparing for BAFO request.

-Hall A dipole RFP used, and bidders conference held. Bids due 7 November.

-CLAS prototype chamber at BNL for testing.

WBS 7

-Preparing the 4-K system at the CHL for the pressure leak test.

-Final leak check of the 6-inch supply transfer line to the south linac completed.

-Completed leak check on the 10-inch line in the CHL return transfer line from the south linac.

-Completed the second bayonet can for the CHL LN2, distribution system. Vacuum jacketed pipe 90% complete; installation at CHL should start this week.

-Floor grating I-beams have been installed and painted at CHL. Installation of the grating should start this week.

WBS 8

Accelerator Enclosure:

• East arc service buildings have been punch-listed and contractor is cleaning up the list for turn-over on or about 1 October.
• LCW system (10”) has been brought online and is now providing LCW to the injector service building.
• Tunnel backfilling is completed.
• All structural concrete on this contract is now completed.
• Contractor has started paving along road by north linac service building and the east arc area.
• Virginia Power is completing clearing on south property line for running their overhead HV lines to the 40 MW transformer.

End Stations:

• Concrete walls under way on the counting house.
• Personnel access tunnels for all three halls are under way.
• Approximately 60% of the beam tunnels are poured.
• Dewatering piping is complete at halls A and C.

EEL:

• Topsoil is placed.
• Painting continues.
• Majority of pavement has been placed.
• Mechanical and electrical work continues.

Linac Installation

-Training on the installation Standard Operating Procedures was conducted with WBS 2.0 personnel.

-Continued to mount cable tray and safety system box way.

-Five sections of LHe supply transfer line were moved into the northeast linac tunnel. All sections are in place except the turnaround box.