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Title: Helium-cooled, FLiBe-breeder, beryllium-multiplier blanket for MINIMARS

Abstract

We adapted the helium-cooled, FLiBe-breeder blanket to the commercial tandem-mirror fusion-reactor design, MINIMARS. Vanadium was used to achieve high performance from the high-energy-release neutron-capture reactions and from the high-temperature operation permitted by the refractory property of the material, which increases the conversion efficiency and decreases the helium-pumping power. Although this blanket had the highest performance among the MINIMARS blankets designs, measured by Mn/sub th/ (blanket energy multiplication times thermal conversion efficiency), it had a cost of electricity (COE) 18% higher than the University of Wisconsin (UW) blanket design (42.5 vs 35.9 mills/kW.h). This increased cost was due to using higher-cost blanket materials (beryllium and vanadium) and a thicker blanket, which resulted in higher-cost central-cell magnets and the need for more blanket materials. Apparently, the high efficiency does not substantially affect the COE. Therefore, in the future, we recommend lowering the helium temperature so that ferritic steel can be used. This will result in a lower-cost blanket, which may compensate for the lower performance resulting from lower efficiency.

Authors:
;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
OSTI Identifier:
5489138
Report Number(s):
UCRL-94084; CONF-860652-16
ON: DE86013898
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 7. topical meeting on the technology of fusion energy, Reno, NV, USA, 15 Jun 1986
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BREEDING BLANKETS; DESIGN; MINIMARS REACTOR; BERYLLIUM; COST; ELECTRICITY; FERRITIC STEELS; FLIBE; VANADIUM BASE ALLOYS; ALKALINE EARTH METALS; ALLOYS; ELEMENTS; IRON ALLOYS; IRON BASE ALLOYS; MAGNETIC MIRROR TYPE REACTORS; METALS; MOLTEN SALTS; REACTOR COMPONENTS; SALTS; STEELS; THERMONUCLEAR REACTORS; VANADIUM ALLOYS; 700201* - Fusion Power Plant Technology- Blanket Engineering

Citation Formats

Moir, R W, and Lee, J D. Helium-cooled, FLiBe-breeder, beryllium-multiplier blanket for MINIMARS. United States: N. p., 1986. Web.
Moir, R W, & Lee, J D. Helium-cooled, FLiBe-breeder, beryllium-multiplier blanket for MINIMARS. United States.
Moir, R W, and Lee, J D. Sun . "Helium-cooled, FLiBe-breeder, beryllium-multiplier blanket for MINIMARS". United States. https://www.osti.gov/servlets/purl/5489138.
@article{osti_5489138,
title = {Helium-cooled, FLiBe-breeder, beryllium-multiplier blanket for MINIMARS},
author = {Moir, R W and Lee, J D},
abstractNote = {We adapted the helium-cooled, FLiBe-breeder blanket to the commercial tandem-mirror fusion-reactor design, MINIMARS. Vanadium was used to achieve high performance from the high-energy-release neutron-capture reactions and from the high-temperature operation permitted by the refractory property of the material, which increases the conversion efficiency and decreases the helium-pumping power. Although this blanket had the highest performance among the MINIMARS blankets designs, measured by Mn/sub th/ (blanket energy multiplication times thermal conversion efficiency), it had a cost of electricity (COE) 18% higher than the University of Wisconsin (UW) blanket design (42.5 vs 35.9 mills/kW.h). This increased cost was due to using higher-cost blanket materials (beryllium and vanadium) and a thicker blanket, which resulted in higher-cost central-cell magnets and the need for more blanket materials. Apparently, the high efficiency does not substantially affect the COE. Therefore, in the future, we recommend lowering the helium temperature so that ferritic steel can be used. This will result in a lower-cost blanket, which may compensate for the lower performance resulting from lower efficiency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {6}
}

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