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J. Cook, D. Helms, W. Skinner

Division (M7), FEL Coordination Group

F. Dylla

IR Demo Project Weekly Report, June 8-12, 1998

June 12, 1998

Management:

We mark an important milestone for the FEL project this week with excellent progress. Two years ago, June 11, 1996 we officially began the IR Demo project. This week the FEL project team declared the electron beam parameters we have obtained in the commissioning of the driver accelerator ready for the first lasing attempt. With the successful commissioning of a bunch length interferometer this week, we determined that the bunch length was sufficiently short (0.3-0.6 ps, rms) to give usthe peak current we need to attempt to lase. The full parameter set we need for first light has now been obtained: stable operation at 38 MeV, 1.1 mA; transverse emittance < 9 mm-mrad; energy spread < 0.2%; bunch length less than 1 ps. The wiggler magnetic array will be installed on Saturday; we will check the wiggler alignment early on Monday morning; and begin with our first light commissioning procedures by later in the day on Monday. Next week should be exciting.

The agenda for the June 22 meeting of the Industrial Advisory Board (IAB) was distributed to the IAB committee members. The Chairman of SURA's Marine Technical Advisory Committee (MTAC) will be attending the meeting so that the two advisory committees can coordinate activities.

On Thursday, June 18th, Bob Marianelli and Eric Rohlfing from DOE-BES will be visiting the laboratory to review progress with the FEL project and the basic science user proposal process.

Installation Activities

During Monday's maintenance day, the last remaining skew quadrupole was installed in the driver accelerator. The only remaining installation items are the final correctors in the back-leg and arcs, and the sextupoles. This hardware is not needed until we commission the recirculation arc and thus the installation of these few remaining components is scheduled for July.

Considerable progress was made this week in readying the hardware in the optical control room