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Title: VUV Spectroscopy in DIII-D Divertor

Abstract

The research carried out on this grant was motivated by the high power emission from the CIV doublet at 155 nm in the DIII-D divertor and to study the characteristics of the radiative divertor. The radiative divertor is designed to reduce the heat load to the target plates of the divertor by reducing the energy in the divertor plasma using upstream scrape-off-layer (SOL) radiation. In some cases, particularly in Partially Detached Divertor (PDD) operations, this emission accounts for more than 50% of the total radiation from the divertor. In PDD operation, produced by neutral gas injection, the particle flow to the target plate and the divertor temperature are significantly reduced. A father motivation was to study the CIV emission distribution in the lower, open divertor and the upper baffled divertor. Two Vacuum Ultra Violet Tangential viewing Television cameras (VUV TTV) were constructed and installed in the upper, baffled and the lower, open divertor. The images recorded by these cameras were then inverted to produce two-dimensional distributions of CIV in the poloidal plane. Results obtained in the project are summarized in this report.

Authors:
;
Publication Date:
Research Org.:
Hampton University (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
838997
Report Number(s):
DOE/ER/54451-1
TRN: US0501615
DOE Contract Number:  
FG02-97ER54451
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 4 Nov 2004
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CAMERAS; DISTRIBUTION; DIVERTORS; DOUBLET-3 DEVICE; GAS INJECTION; PLASMA; PLATES; RADIATIONS; SPECTROSCOPY; TARGETS; TELEVISION CAMERAS; VUV SPECTROSCOPY; DIVERTOR TOKAMAK; DIII-D

Citation Formats

Alkesh Punjabi, and Nelson Jalufka. VUV Spectroscopy in DIII-D Divertor. United States: N. p., 2004. Web. doi:10.2172/838997.
Alkesh Punjabi, & Nelson Jalufka. VUV Spectroscopy in DIII-D Divertor. United States. doi:10.2172/838997.
Alkesh Punjabi, and Nelson Jalufka. Thu . "VUV Spectroscopy in DIII-D Divertor". United States. doi:10.2172/838997. https://www.osti.gov/servlets/purl/838997.
@article{osti_838997,
title = {VUV Spectroscopy in DIII-D Divertor},
author = {Alkesh Punjabi and Nelson Jalufka},
abstractNote = {The research carried out on this grant was motivated by the high power emission from the CIV doublet at 155 nm in the DIII-D divertor and to study the characteristics of the radiative divertor. The radiative divertor is designed to reduce the heat load to the target plates of the divertor by reducing the energy in the divertor plasma using upstream scrape-off-layer (SOL) radiation. In some cases, particularly in Partially Detached Divertor (PDD) operations, this emission accounts for more than 50% of the total radiation from the divertor. In PDD operation, produced by neutral gas injection, the particle flow to the target plate and the divertor temperature are significantly reduced. A father motivation was to study the CIV emission distribution in the lower, open divertor and the upper baffled divertor. Two Vacuum Ultra Violet Tangential viewing Television cameras (VUV TTV) were constructed and installed in the upper, baffled and the lower, open divertor. The images recorded by these cameras were then inverted to produce two-dimensional distributions of CIV in the poloidal plane. Results obtained in the project are summarized in this report.},
doi = {10.2172/838997},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Nov 04 00:00:00 EST 2004},
month = {Thu Nov 04 00:00:00 EST 2004}
}

Technical Report:

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