Program status 4. quarter -- FY 1995: ITER and technology
A scoping level analysis of heat exhaust for the DEMO divertor strawman design was performed. It was concluded that to reduce the surface heat flux to the divertor, a combination of impurities radiation, compression, and increase in SOL electron density will have to be used. GA completed the preparation on the description of the helium-cooled, lithium breeder and V-alloy/ferritic steel DEMO blanket design focusing on addressing the issues of materials compatibility and reliability of high pressure gas system. Using ferritic steel, a helium Li-breeder design can handle neutron wall loading in the range of 6 to 8 MW/M{sup 2}. With advanced material like V-alloy, neutron wall loading in the range of 9 to 11 MW/m{sup 2} can be handled by similar design. The design of all components for a combline antenna for JFT-2M has been completed. Completion of the fabrication is scheduled for 11/95. The 4in x 4in 110 GHz window was fabricated and delivered to CPI (Varian) for testing. The second DiMES sample with Be/W striped coatings was exposed to four DIII-D plasma shots. Deuterium areal density measurements by W. Wampler of SNL showed the results from Be/W and Mo/V coated DiMES samples. High uptake of about 2x10{sup 17} atoms/cm{sup 2} was recorded for V. Be and C were lower by a factor of two, and Mo and W were lowest by about a factor of ten. An ITER magnetic coil has been fabricated and shipped to Brookhaven awaiting time for radiation testing. High-Nicalon and Super-Nicalon SiC fibers were received from PNL. Fabrication of different composite samples with different coatings is proceeding.
- Research Organization:
- General Atomics, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-89ER52153
- OSTI ID:
- 257429
- Report Number(s):
- GA-C-19572(10/24/95); ON: DE96012275; TRN: AHC29615%%126
- Resource Relation:
- Other Information: PBD: 24 Oct 1995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
THERMONUCLEAR REACTORS
RESEARCH PROGRAMS
PROGRESS REPORT
THERMONUCLEAR POWER PLANTS
BREEDING BLANKETS
THERMONUCLEAR REACTOR MATERIALS
VANADIUM ALLOYS
JFT-2M TOKAMAK
MICROWAVE EQUIPMENT
BERYLLIUM
CARBON
ITER TOKAMAK
SILICON CARBIDES
COMPOSITE MATERIALS
TUNGSTEN
MOLYBDENUM