MEMORANDUM


To: J. Cook, D. Helms, W. Skinner

cc: Division (M7), FEL Coordination Group

From: F. Dylla

Subject: IR Demo Project Weekly Report, November 24-26, 1997

Date: November 26, 1997

This week's report is being sent mid-week and is abbreviated due to the Thanksgiving holiday. Commissioning activities have been proceeding well. Accordingly, commissioning activities are suspended from the end of owl shift on Wednesday (Nov. 26) until Monday evening (Dec. 1). Some installation activities with the fit-up of arc dipole (DQ) magnets will proceed on Friday and Saturday depending on the availability of manpower from concurrent nuclear physics activities. Brief updates in the usual categories follow:

Management

F. Dylla met with DOE-BES Program Management (R. Marianelli and W. Oosterhuis) on Monday Nov. 24 to discuss the internal BES review of pre-proposals that have been sent to BES in Sept. and Oct. for use of the IR Demo. A significant number of the pre-proposals were selected to go forward for preparation of full proposals. Also discussed at the meeting were potential collaboration topics between Jefferson Lab and BNL on FEL technology and applications.

Installation Activities

Shielding was added to the recirculation dump so that commissioning activities can proceed through the cryomodule to this dump. Electrical connections were completed to the dipole magnets (DU) up and downstream of the cryomodule.

Vacuum chambers up and downstream to the wiggler chambers were installed. The viewer assemblies were added to the wiggler chamber.

The optical cavities assemblies were fiducialized and placed in preliminary positions on their respective optical tables.


Commissioning Activities

Commissioning activities over the last four days focused on tuning up the injector cryounit to flesh-out an RF calibration problem and check-out of the injection line diagnostics. All hardware is now in place to allow beam to progress through the linac cryomodule to the recirculation dump.