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Free electron maser amplifier energy recovery experiments
2002 / IEEE / 0-7803-7256-5
This item was taken from the IEEE Conference ' Free electron maser amplifier energy recovery experiments ' We present results from a reversed guide magnetic field Raman free electron maser (FEM) amplifier experiment at Strathclyde University. The FEM amplifier is designed for a near grazing intersection of the beam line and waveguide mode to maximise the frequency tuning range. The tuneability is further extended by adjustment of beam voltage and undulator field strength. The FEM amplifier has shown a gain of over 35 dB over a 30% frequency band. The frequency range of operation can be extended to 65% of centre frequency by adjustment of the cathode voltage. Saturated gain of 23 dB with an output power of 1 MW and efficiency of 5% has been measured. An experiment is currently under way to increase the overall efficiency of the device using a two stage depressed collector energy recovery system.
Fem Energy Recovery Experiments
Reversed Guide Magnetic Field Fem
Near Grazing Intersection
Frequency Tuning Range
Two Stage Depressed Collector Energy Recovery System
Amplifier Operating Frequency Band
Cathode Voltage Adjustment
Raman Free Electron Maser Amplifier
Microwave Power Amplifiers
Free Electron Lasers
Undulator Field Strength