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Title: Design and measurement methods for a lithium vapor box similarity experiment

Abstract

The lithium vapor box divertor is a concept for handling the extreme divertor heat fluxes in magnetic fusion devices. In a baffled slot divertor, plasma interacts with a dense cloud of Li vapor which radiates and cools the plasma, leading to recombination and detachment. Before testing on a tokamak the concept should be validated: we plan to study detachment and heat redistribution by a Li vapor cloud in laboratory experiments.Mass changes and temperatures are measured to validate a Direct Simulation Monte Carlo model of neutral Li.The initial experiment involves a 5 cm diameter steel box containing 10g of Li held at 650 degrees C as vapor flows out a wide nozzle into a similarly-sized box at a lower temperature. Diagnosis is made challenging by the required material compatibility with lithium vapor. Vapor pressure is a steep function of temperature, so to validate mass flow models to within 10%, absolute temperature to within 4.5K is required. The apparatus is designed to be used with an analytical balance to determine mass transport. Details of the apparatus and methods of temperature and mass flow measurements are presented.

Authors:
; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
U. S. Department of Energy
OSTI Identifier:
1562010
DOE Contract Number:  
AC02-09CH11466
Resource Type:
Data
Country of Publication:
United States
Language:
English
Subject:
lithium vapor

Citation Formats

Schwartz, J A, Emdee, E D, Jaworski, M A, and Goldston, R J. Design and measurement methods for a lithium vapor box similarity experiment. United States: N. p., 2018. Web. doi:10.11578/1562010.
Schwartz, J A, Emdee, E D, Jaworski, M A, & Goldston, R J. Design and measurement methods for a lithium vapor box similarity experiment. United States. https://doi.org/10.11578/1562010
Schwartz, J A, Emdee, E D, Jaworski, M A, and Goldston, R J. Wed . "Design and measurement methods for a lithium vapor box similarity experiment". United States. https://doi.org/10.11578/1562010. https://www.osti.gov/servlets/purl/1562010.
@article{osti_1562010,
title = {Design and measurement methods for a lithium vapor box similarity experiment},
author = {Schwartz, J A and Emdee, E D and Jaworski, M A and Goldston, R J},
abstractNote = {The lithium vapor box divertor is a concept for handling the extreme divertor heat fluxes in magnetic fusion devices. In a baffled slot divertor, plasma interacts with a dense cloud of Li vapor which radiates and cools the plasma, leading to recombination and detachment. Before testing on a tokamak the concept should be validated: we plan to study detachment and heat redistribution by a Li vapor cloud in laboratory experiments.Mass changes and temperatures are measured to validate a Direct Simulation Monte Carlo model of neutral Li.The initial experiment involves a 5 cm diameter steel box containing 10g of Li held at 650 degrees C as vapor flows out a wide nozzle into a similarly-sized box at a lower temperature. Diagnosis is made challenging by the required material compatibility with lithium vapor. Vapor pressure is a steep function of temperature, so to validate mass flow models to within 10%, absolute temperature to within 4.5K is required. The apparatus is designed to be used with an analytical balance to determine mass transport. Details of the apparatus and methods of temperature and mass flow measurements are presented.},
doi = {10.11578/1562010},
url = {https://www.osti.gov/biblio/1562010}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {8}
}

Works referenced in this record:

Design and measurement methods for a lithium vapor box similarity experiment
journal, October 2018


    Works referencing / citing this record:

    Design and measurement methods for a lithium vapor box similarity experiment
    journal, October 2018


    Design and measurement methods for a lithium vapor box similarity experiment
    journal, October 2018