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J. Cook, D. Helms, W. Skinner

Division (M7), FEL Coordination Group

F. Dylla

IR Demo Project Weekly Report, May 24-29, 1998

May 29, 1998

Management

This week commissioning operations were suspended as we completed bake-out and high voltage conditioning of the photogun after replacement of the GaAs photo cathode. At the week's end, we are prepared to begin commissioning activities on Monday (6/1). We used the down-time constructively to complete installation of important diagnostic systems (the Happek bunch length spectrometers), alignment of reverse bend dipoles (DF) on the east arc, and refinement of the first light commissioning procedures.

On Wednesday, May 27, the project successfully presented the Accelerator Readiness Review (ARR) process to a peer review committee chaired by Larry Coulson, Asst. Director of Fermilab. The draft report from the committee recommended that the laboratory should proceed with FEL commissioning activities as planned and that the ARR process is appropriate to verify the readiness of the machine for user experiments.

Only one committee finding needed to be dealt with prior to commencing high power (mA) beam operation:approval of interim safety envelopes by Jefferson Lab management and the DOE Site Office. This approval was obtained by Friday afternoon.

Installation Activities

The Happek interferometers were installed and aligned this week. Commissioning and testing will be done the next week with beam.

Four cameras with radiation damage in the 2F or 2G regions were replaced. Two other cameras in the 2F region were moved to their correct positions.

All IOC's were rebooted to install network diagnostics and other features.

Two DF magnets were installed, cables were pulled for additional correctors, and measurements