MEMORANDUM

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

cc: Division (M7), FEL Coordination Group

From: F. Dylla

Subject: IR Demo Project Weekly Report, January 5-9, 1998

Date: January 9, 1998

Management

A visit to NRL was made on Thursday, Jan. 8th by F. Dylla, C. Bohn, and G. Neil. A presentation on the Jefferson Lab FEL Project was given as part of a seminar series hosted by NRL's Condensed Matter and Radiation Effects Division. We talked to a number of staff members from this Division and the Chemistry Division about planning and executing experiments using the IR Demo. Several NRL staff members will be visiting the lab during next week's LPC Workshop.

Final preparations were made for the LPC Workshop which will be held on Jan. 14-15th. As of today (Jan. 9th), over 50 registrants from outside organizations were planning to attend.

A planning/brainstorming session was held this week to look at various options for upgrading the IR Demo to higher powers (>10 kW in the IR) and an expanded wavelength range (0.2-60 microns) based on the use the higher voltage cryomodules under development for the CEBAF energy upgrade program.

Commissioning Activities

We outlined key top-level tasks that need to be accomplished prior to resuming commissioning with electron beam for which the planned date is 26 Jan 98. All of the key tasks are being worked, and they are updated during the daily (11:45 a.m.) status meetings in the FEL Conference Room.

A schedule for the first light commissioning through the first user experiment from Jan. 26 through June 30th was formulated at this week's commissioning meeting.

Installation Activities

The last 2 DQ magnets were installed and aligned in the east arc. All 4 DX magnets, their bend chambers, and the straight chambers connecting to the DQ's are also installed.

The last DV magnet has been adjusted, measured and released for installation.

The beam line was opened in front of the 2G, straight ahead dump, in preparation for the GEN target hardware.

Additional software work is scheduled for next week to separate the Injector RF modules into individual systems and make the overall Injector more robust. Work on the main machine is taking priority.

Testing will start next week to find two 8 KW klystrons and a spare for the FEL cryomodule. After installation, the klystrons will be conditioned to 14 KV.

The upstream alignment pellicle was installed in the optical cavity and its preliminary alignment was completed. The downstream alignment pellicle is scheduled for installation early next week. The laser beam collimator has been assembled in the optics lab with installation scheduled for 2 weeks.