IMP (Intense Microwave Prototype), a free-electron laser amplifier for plasma heating in the Microwave Tokamak Experiment
The Intense Microwave Prototype (IMP) is an induction-linac based free-electron laser (IFEL) amplifier system that is presently under construction at the Lawrence Livermore National Laboratory (LLNL). It will produce up to 2 MW of average power at 250 GHz for electron cyclotron resonance heating experiments in the Microwave Tokamak Experiment (MTX). The Experimental Test Accelerator-II (ETA-II) will provide the electron beam. ETA-II is designed to produce an electron beam with a current of 3 kA at an energy of 10 MeV and a brightness of over 10/sup 8/ A/(m-rad)/sup 2/. In addition, it is designed to produce 70-ns-FWHM pulses at a repetition rate of 5 kHz. The high magnetic field and wide tunability capabilities required for the FEL will be provided by a permanent magnet-laced electromagnetic wiggler with a 10-cm period and an overall length of 5.5 m. We present the physics design and expected performance of the FEL, along with a description of the experiment and of the phased development to high average power. 17 refs., 8 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7080325
- Report Number(s):
- UCRL-99368; CONF-8808146-1; ON: DE89001920
- Country of Publication:
- United States
- Language:
- English
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The ETA-II linear induction accelerator and IMP wiggler: A high-average-power millimeter-wave free-electron-laser for plasma heating
Two-gigawatt burst-mode operation of the intense microwave prototype (IMP) free-electron laser (FEL) for the microwave tokamak experiment (MTX)
Related Subjects
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ACCELERATORS
BEAM TRANSPORT
BEAMS
CLOSED PLASMA DEVICES
DESIGN
ECR HEATING
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRON BEAMS
EQUIPMENT
FREE ELECTRON LASERS
HEATING
HIGH-FREQUENCY HEATING
LASERS
LEPTON BEAMS
LINEAR ACCELERATORS
MAGNETIC FIELDS
MAGNETS
PARTICLE BEAMS
PERFORMANCE
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
WIGGLER MAGNETS