AGENDA:

General Announcements

Action Items

Progress Toward the Milestones of the enclosed schedule:

NOTE: Meetings are held every Tuesday in CEBAF Center, Room #A110, at 11 a.m., unless otherwise notified.

NOTE: A reminder to all principals to submit a brief weekly progress to D. Gilchrist each Friday by noon

ATTENDEES: M. Augustine, G. Biallas, S. Benson, C. Bohn, L. Dillon-Townes, D. Engwall, J. Fugitt, K. Hovater, K. Jordan, G. Krafft, D. Kehne, R. Legg, W. Merz, G. Neil, C. Piller, M. Shinn, T. Siggins, C. Sinclair, J. Song, R. Walker, M. Wiseman

General Announcements:

None

Decisions/Comments:

Safety Action Items:

None

New Safety Action Items:

None

Completed Safety Action Items:

The Cryomodule Test Cave needs to be brought up to present standards of redundancy in order to be usable with our 50 kW RF power. That group may need some of our help. Complete for this meeting

Action Items:

T. Siggins/D. Engwall - Get the gun and line baked and get the Experiment running. A strong Cesium response was seen over the Week end, so bakeout has a green light. A Tech crew may be needed by T. Siggins to come in on Wednesday morning to wrap insulation.

G. Biallas - Make a new ceramic stack and make a new cathode support tube with a anti field emission coating. Contract for ion implantation work at Berkeley in process and samples sent to them.

R. Legg - Investigate an alternate scheme to use the Longitudinal apparatus to perform the high voltage portions of the Transverse experiment. Meeting to be held this week. Chopper cavity may need a second probe if this method is used..

Determine the need for additional personnel required to match or beat the Schedule. No needs this week.

T. Siggins - Write the tricks of polishing learned at SLAC. No action.

G. Biallas - Define Nomenclature document Definitions have to get to T. Hassler. No action.

G. Biallas - Finish the LCW System: Flow & Temp reading, Level indicators, UV Lamp - UV lamp needs to be commissioned, full qualification walk through needed. No action.

K. Jordan/S. Benson - Failure analysis for the 10 MeV beam handling. No action

M. Shinn - Put phase noise documentation on the web. In process.

M. Shinn - Get HeNe at low power onto cathode. In process.

All - general cleanup after bake. Checkout systems, straighten out cabling. Partially done.

D. Kehne - Publish the straw man for the 10 MeV Experiment . Will be complete when published on the WEB.

G. Biallas - integrate the new experimental schedule developed by Bob Legg into the main schedule. In process.

New Action Items:

B. Dillon Townes - Get the 10 MeV beam line signed off.

K. Jordan - Get the bunch length measurement contract signed.

K. Bohn - Produce the design for the multislit for 10 MeV.

K. Jordan - Make sure that version control of settings is maintained.

Completed Action Items:

J. Susta/M. Wiseman - Put a relief in the waveguides in case a circulator window breaks. The waveguide relief is being assembled. System in action - complete.

D. Kehne - Have simulations or bracketed simulations of the 250 keV projected initial running case for the Gun. Complete.

R. Walker - get Chopper LCW hooked up. Complete for this meeting.

G. Biallas - Get cleaning started in the area on a regular basis. G. Biallas will set up a roster for cleaning in the future. G. Biallas will talk to T. Siggins. Complete.

Individual Reports of 8/2/96:

G. Biallas:

We are holding to our revamped schedule for the ITS with the start of the bake on the gun and beam line on Wednesday.

Kovar pans were ordered for making the rings for the ceramics.

L. Phillips reports that FM Technologies is interested in selling us an anti field emission coating for the stem.

Good material for Midvoltage Ring will be in on Aug. 14.

L. A. Dillon-Townes:

10 MeV Experiment:

- Visited brazing vendor to review brazing of dump and discuss the ceramic to kovar brazing method.

- Reflective mirror for the drift tube diagnostics completed.

- Assembly drawings sent out for review.

J. Fugitt:

Tested the first injector HOM filter to 30 kW. Did not go higher because we did not have the arc detector system for the filter operational. The temperature rise on the unit was about as expected. We will complete tests to 50 kW early next week.

Continued installation of 50 KW HPA equipment

Ran high voltage, Crowbar, and short circuit tests on the second HPA, looks good, Will run power RF next week when arc detectors are complete.

L. Phillips:

1. A number of brazing sources have been identified. Tim is currently contacting them for interest. Tim and I will evaluate the best possibilities that surface. Responsibility for braze fixturing will depend on the source selected but fixture materials are on hand.

2. Nickel plating of the kovar rings will be done at JNL using the traditional Wood's strike/Watts bath combination. Nickel electrodes and most chemicals are on hand; the balance will be ordered.

3. The tightness of the time schedule has been discussed with LBL group. They are proceeding with small coupons and it was decided to make fixturing required for rotating the cylinders in the beam line at JNL. Shop sketches will be made this week.

4. A report from FM Technologies is due today. I need a copy of the small sample configuration used in Tom Venhaus's field emission apparatus to send to them.

5. The conductive band to bridge two metallizations, if necessary, is trivial.

6. Neither Thiokol nor Showa Denka make zirconia shapes. Those zirconia suppliers I have contacted so far do make zirconia cylinders, but their market does not need the fully densified material we require for vacuum compatibility.

7. Fired-on conductive tiles were suggested by FM Technologies and more will be known of this today.

R. Walker:

A second drive probe for the Chopper cavity will be built. The probe coupling needs to be checked and the cavity tuned before the next test.

All waveguide elbows with the Arc Detector Sensor blocks and the 5 mm Lens Holders are finished by the Machine Shop and are being installed. Additional fiber optic cable is due next week.

A meeting was held this week to discuss the RF system software for the IR FEL. A list of parameters will be given to the software group next week.

The Buncher cavity water skid and controllers will be tested next week. Additional plumbing needs to be added first.

The FEL Master Oscillator, an HP8644A, is still at HP for testing and calibration. It was due back this week, but is not likely to be shipped until late next week.

The Cathode Power Supply (CPS) specification was changed to enable operation of the IR FEL linac klystrons at 8 KW. It is ready for review.

Enclosures:

ITS Schedule for 8/6/96