ECH (electron cyclotron heating) in the Microwave Tokamak Experiment (open access)

ECH (electron cyclotron heating) in the Microwave Tokamak Experiment

The Microwave Tokamak Experiment (MTX) at LLNL will investigate electron heating in the MTX tokamak (formerly Alcator-C) at high density (up to 6 x 10/sup 20/ m/sup -3/) and high power by using a free electron laser (FEL). Parameters of the FEL are a peak power up to 8 GW and 50 ns duration, with average power 1 to 2 MW, at a frequency of 250 GHz. The planned input driver for the FEL is a gyrotron oscillator. The FEL output will be transported quasi-optically, inside a 50 cm evacuated pipe, to the input port of the tokamak by means of a four-mirror system. Launch polarization is the ordinary mode. This experiment will test the FEL technology at short wavelength and high peak and average power levels. Important physics issues to be explored are the effects of intense pulse heating (electric field up to 500 kV/cm) on nonlinear wave absorption and bulk heating, plasma confinement, plasma impurities, and parametric instabilities. Because the FEL technology is scalable to higher frequency and power, success of these experiments has importance for next-generation tokamaks.
Date: April 28, 1987
Creator: Stallard, B. W.; Smith, G. R.; James, R. A.; Thomassen, K. I.; Kritz, A. H.; Makowski, M. et al.
Object Type: Article
System: The UNT Digital Library
Texas Register, Volume 12, Number 32, Pages 1407-1427, April 28, 1987 (open access)

Texas Register, Volume 12, Number 32, Pages 1407-1427, April 28, 1987

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: April 28, 1987
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
I.F.H. Quarter Module Lifting Fixture (open access)

I.F.H. Quarter Module Lifting Fixture

The main purpose of this report is to explain the procedure for lifting the I.F.H. quarter module from a 'prone' position to a 'standing' position and then into the liquid nitrogen test vessel. The main objective for the design of the lifting fixtures was simplicity. The fixtures are to be made of .75 inch thick stainless steel plates which is a stock item for the steel companies. The fixtures are stainless steel so they will be able to keep their structural integrity when immersed in the liquid nitrogen.
Date: April 28, 1987
Creator: May, M.P.
Object Type: Report
System: The UNT Digital Library