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Title: Self-pumping impurity control by in-situ metal deposition

Abstract

A system for in-situ removal of helium by trapping in freshly deposited metal surface layers of a limiter or divertor has been studied. The system would trap helium on a limiter front surface, or a divertor plate, at low plasma edge temperatures, or in a limiter slot region, at high edge temperatures. Fresh material, introduced to the plasma and/or scrape-off zone, would be added at a rate of about five times the alpha production rate. The material would be reprocessed periodically, e.g., once year. Possible materials are nickel, vanadium, niobium, and tantalum. Advantages of a self-pumping system are the absence of vacuum ducts and pumps, and the minimization of tritium processing and inventory.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
OSTI Identifier:
6078289
Report Number(s):
ANL/FPP/TM-174
ON: DE83014265
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DIVERTORS; SURFACE COATING; HELIUM; TRAPPING; LIMITERS; IMPURITIES; NICKEL; NIOBIUM; REMOVAL; SURFACES; TANTALUM; VACUUM SYSTEMS; VANADIUM; DEPOSITION; ELEMENTS; FLUIDS; GASES; METALS; NONMETALS; RARE GASES; TRANSITION ELEMENTS; 700209* - Fusion Power Plant Technology- Component Development & Materials Testing

Citation Formats

Brooks, J N, and Mattas, R F. Self-pumping impurity control by in-situ metal deposition. United States: N. p., 1983. Web. doi:10.2172/6078289.
Brooks, J N, & Mattas, R F. Self-pumping impurity control by in-situ metal deposition. United States. https://doi.org/10.2172/6078289
Brooks, J N, and Mattas, R F. Sun . "Self-pumping impurity control by in-situ metal deposition". United States. https://doi.org/10.2172/6078289. https://www.osti.gov/servlets/purl/6078289.
@article{osti_6078289,
title = {Self-pumping impurity control by in-situ metal deposition},
author = {Brooks, J N and Mattas, R F},
abstractNote = {A system for in-situ removal of helium by trapping in freshly deposited metal surface layers of a limiter or divertor has been studied. The system would trap helium on a limiter front surface, or a divertor plate, at low plasma edge temperatures, or in a limiter slot region, at high edge temperatures. Fresh material, introduced to the plasma and/or scrape-off zone, would be added at a rate of about five times the alpha production rate. The material would be reprocessed periodically, e.g., once year. Possible materials are nickel, vanadium, niobium, and tantalum. Advantages of a self-pumping system are the absence of vacuum ducts and pumps, and the minimization of tritium processing and inventory.},
doi = {10.2172/6078289},
url = {https://www.osti.gov/biblio/6078289}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {5}
}