Now showing items 1-10 of 20
A High-average power tapered FEL amplifier at submillimeter frequencies using sheet electron beams and short-period wigglers
A high-average-power FEL amplifier operating at submillimeter frequencies is under development at the University of Maryland. Program goals are to produce a CW, ~ 1 MW, FEL amplifier source at frequencies between 280 GHz ...
Near-millimeter free electron lasers with small period wigglers and sheet electron beams
Electron cyclotron resonance heating (ECRH) of plasmas in magnetic fusion research and space-borne radar systems are both projected to require high power radiation sources at wavelength λ not, vert, similar 1 mm. For ECRH, ...
First operation of a 94 GHz, sheet beam, FEL amplifier
Millimeter wave (94 GHz) amplification has been observed in the sheet beam, planar wiggler, free electron laser. Using a 4 A sheet beam (20 mm × 1.0 mm) at an electron energy of 530 keV, injected wave power of 5 W was ...
Experimental and numerical results on a millimeter-wave free electron laser amplifier
(Elsveier - Nuclear instruments and methods in physics research, 1993-07)
Progress in studies of a millimeter-wave free electron laser amplifier based on a small period planar wiggler and a sheet electron beam is reported. Successful propagation of a 15 A sheet electron beam has been accomplished ...
From linearity towards chaos: Basic studies of relativistic backward-wave oscillators
(American Physical Society, 1992-09-14)
Recent experimental studies have revealed for the first time some basic features of pulsed. relativistic (300-600 keY) backward-wave oscillators such as starting current, axial mode locking, and multifrequency operation. ...
Progress in high power millimeter-wave FELs with short period wigglers and sheet electron beams
(Institute of Electrical and Electronics Engineers, 1989-05)
A Short-period wiggler millimeter-wave free electron laser for plasma heating and space-borne radar
We will report on the status of a new mm-wave FEL research program based on short-period electromagnet wigglers and a low voltage (500 kV) sheet electron beam. Recent results of measurements and theoretical modeling ...
High-average-power CW FELs for application to plasma heating designs and experiments
A short-period-wiggler (period - 1 cm), sheet-beam FEL has been proposed as a low-cost source of high-average-power (1 MW) millimeter-wave radiation for plasma heating and space-based radar applications. Recent calculations ...
Short-period-wiggler free electron lasers with sheet electron beams
(Institute of Electrical and Electronics Engineers, 1988-06)
Theoretical and experimental investigations of the cyclotron interaction effect on relativistic backward wave oscillator operation
Microwave sources based on backward-wave oscillators (BWOs) driven by relativistic electron beams are capable of producing high power coherent radiation in the cm and mm wavelength region. When the axial magnetic field is ...