| Paper | Title | Page |
|---|---|---|
| TUPPH065 | Control and Support System for LEBRA FEL Operation | 391 |
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| The near infrared Free Electron Laser (FEL) has been provided for scientific studies in various fields since 2003 at the Laboratory for Electron Beam Research and Application (LEBRA) in Nihon University. The operation time of the LEBRA 125MeV Linac reached approximately 2000 hr/year in 2007. About half of the machine time was scheduled for the experiments using FEL. So far only 3 staffs have been dedicated to the operation of the Linac and the FEL beam line. Therefore, the control and support system has been required to realize stable oscillation of FEL during a long operation time and to reduce the work load of the operators. The architecture and the main capabilities of the control and support system for LEBRA FEL are described in this report. The system consists of the electron beam energy feedback program and the FEL resonator mirror control program. The beam energy feedback program has successfully operated to suppress the pulse-to-pulse fluctuation of the beam energy to less than 0.1%. |