skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: NSTX Tangential Divertor Camera

Abstract

Strong magnetic field shear around the divertor x-point is numerically predicted to lead to strong spatial asymmetries in turbulence driven particle fluxes. To visualize the turbulence and associated impurity line emission near the lower x-point region, a new tangential observation port has been recently installed on NSTX. A reentrant sapphire window with a moveable in-vessel mirror images the divertor region from the center stack out to R 80 cm and views the x-point for most plasma configurations. A coherent fiber optic bundle transmits the image through a remotely selected filter to a fast camera, for example a 40500 frames/sec Photron CCD camera. A gas puffer located in the lower inboard divertor will localize the turbulence in the region near the x-point. Edge fluid and turbulent codes UEDGE and BOUT will be used to interpret impurity and deuterium emission fluctuation measurements in the divertor.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
828495
Report Number(s):
PPPL-3982
TRN: US0404002
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 16 Jul 2004
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CAMERAS; DEUTERIUM; DIVERTORS; FIBER OPTICS; FLUCTUATIONS; MAGNETIC FIELDS; MIRRORS; PLASMA; SAPPHIRE; SHEAR; TURBULENCE

Citation Formats

A.L. Roquemore, Ted Biewer, D. Johnson, S.J. Zweben, Nobuhiro Nishino, and V.A. Soukhanovskii. NSTX Tangential Divertor Camera. United States: N. p., 2004. Web. doi:10.2172/828495.
A.L. Roquemore, Ted Biewer, D. Johnson, S.J. Zweben, Nobuhiro Nishino, & V.A. Soukhanovskii. NSTX Tangential Divertor Camera. United States. doi:10.2172/828495.
A.L. Roquemore, Ted Biewer, D. Johnson, S.J. Zweben, Nobuhiro Nishino, and V.A. Soukhanovskii. Fri . "NSTX Tangential Divertor Camera". United States. doi:10.2172/828495. https://www.osti.gov/servlets/purl/828495.
@article{osti_828495,
title = {NSTX Tangential Divertor Camera},
author = {A.L. Roquemore and Ted Biewer and D. Johnson and S.J. Zweben and Nobuhiro Nishino and V.A. Soukhanovskii},
abstractNote = {Strong magnetic field shear around the divertor x-point is numerically predicted to lead to strong spatial asymmetries in turbulence driven particle fluxes. To visualize the turbulence and associated impurity line emission near the lower x-point region, a new tangential observation port has been recently installed on NSTX. A reentrant sapphire window with a moveable in-vessel mirror images the divertor region from the center stack out to R 80 cm and views the x-point for most plasma configurations. A coherent fiber optic bundle transmits the image through a remotely selected filter to a fast camera, for example a 40500 frames/sec Photron CCD camera. A gas puffer located in the lower inboard divertor will localize the turbulence in the region near the x-point. Edge fluid and turbulent codes UEDGE and BOUT will be used to interpret impurity and deuterium emission fluctuation measurements in the divertor.},
doi = {10.2172/828495},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jul 16 00:00:00 EDT 2004},
month = {Fri Jul 16 00:00:00 EDT 2004}
}

Technical Report:

Save / Share: