Pulse selection control for the IR FEL photocathode drive laser
- 23 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2, 2529-2531
- https://doi.org/10.1109/pac.1997.751263
Abstract
The method for current control of a photocathode source is described. This system allows for full remote control of a photocathode drive laser for resulting electron beam currents ranging from less than one microamp to a full current of five milliamps. All current modes are obtained by gating the drive laser with a series of electro-optical cells. The system remotely generates this control signal by assuming a mode of operation with the following properties selectable: Current mode as continuous or gated, micropulse density, macropulse gate width from single shot to 1 ms duration, macropulse synchronization to A/C line voltage (60 Hz) or an external trigger, 60 Hz phase and slewing through 60 Hz when applicable. All selections are derived from programmable logic devices operating from a master-oscillator resulting in a discrete, phase stable, pulse control for the drive laser. Complete system documentation is available at http://www.jlab.org/fel.Keywords
This publication has 5 references indexed in Scilit:
- Recirculating accelerator driver for a high-power free-electron laser: a design overviewPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A multislit transverse-emittance diagnostic for space-charge-dominated electron beamsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Design of a high charge CW photocathode injector test stand at CEBAFPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Development of an accelerator-ready photocathode drive laser at CEBAFPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Beam transport design for a recirculating-linac FEL driverNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1996