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    Project Progress Summary

    February 20, 1991

    \Message from the Director

    CEBAF is recognized as a very successful project and laboratory, due to the caliber, commitment, and enthusiasm of the staff. You make our achievements and progress possible! Let’s continue to get our job done safely and right (QA), and continue to pay attention to housekeeping in all work areas. You are the most impressive team I have had the pleasure to lead. Thanks!

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    Project Progress Summary

    February 20, 1991

    WBS 7

    • This weekend we operated at 4 K to the tunnel, incorporating a two-turbine liquid nitrogen cycle.
    • On Tuesday, 19 February, we started the warm vacuum pump and went to 2 K in the tunnel. By 4 p.m., both the cryomodule and the quarter-cryomodule were at 2 K.

    WBS 1

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    Project Progress Summary

    March 5, 1991

    WBS 1

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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.

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    Project Progress Summary

    11 September 1990

    Injector and Front-End Test

    -First cryomodule is in the tunnel.

    -Four klystrons have been installed in the first HPA.

    -Copper cavities (chopper 1 & 2, capture section) have been installed on the injector girder as injector reassembly continues.

    -Electronics have been reinstalled in high-voltage cage for the gun. First try to run gun from control room this week.

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    Project Progress Summary

    18 September 1990

    Injector and Front-End Test

    -Injector main pump and vacuum manifold installed.

    -Fabrication of 5-MeV chicane vacuum chambers started on schedule at University of Illinois.

    -Cables for injector magnets and controls pulled.

    -First cryomodule has been mounted on its stands and cabling is proceeding.

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    Project Progress Summary

    16 October 1990

    Injector and Front-End Test

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    Project Progress Summary

    23 October 1990

    Semi-Annual Review

    Project preparations for a November review are continuing, although the date has not been set yet.

    Injector and Front-End Test

    -Beam viewers in the injector became operational in preparation for a 100-kV beamline test planned for this week.