NSTX tangential divertor camera

A. L. Roquemore; Ted Biewer; D. Johnson; S. J. Zweben; Nobuhiro Nishino; V. A. Soukhanovskii

doi:10.1063/1.1789609

NSTX tangential divertor camera

A. L. Roquemore
, Ted Biewer
, D. Johnson
, S. J. Zweben
, Nobuhiro Nishino
, V. A. Soukhanovskii

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

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 40 500 frames/s photron complementary metal-oxide-semiconductor 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.

Original language	English
Pages (from-to)	4190-4192
Number of pages	3
Journal	Review of Scientific Instruments
Volume	75
Issue number	10 II
DOIs	https://doi.org/10.1063/1.1789609
State	Published - Oct 2004
Externally published	Yes

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10.1063/1.1789609

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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 40 500 frames/s photron complementary metal-oxide-semiconductor 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.",

author = "Roquemore, \{A. L.\} and Ted Biewer and D. Johnson and Zweben, \{S. J.\} and Nobuhiro Nishino and Soukhanovskii, \{V. A.\}",

year = "2004",

month = oct,

doi = "10.1063/1.1789609",

language = "English",

volume = "75",

pages = "4190--4192",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "10 II",

}

TY - JOUR

T1 - NSTX tangential divertor camera

AU - Roquemore, A. L.

AU - Biewer, Ted

AU - Johnson, D.

AU - Zweben, S. J.

AU - Nishino, Nobuhiro

AU - Soukhanovskii, V. A.

PY - 2004/10

Y1 - 2004/10

N2 - 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 40 500 frames/s photron complementary metal-oxide-semiconductor 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.

AB - 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 40 500 frames/s photron complementary metal-oxide-semiconductor 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.

UR - https://www.scopus.com/pages/publications/9944227825

U2 - 10.1063/1.1789609

DO - 10.1063/1.1789609

M3 - Article

AN - SCOPUS:9944227825

SN - 0034-6748

VL - 75

SP - 4190

EP - 4192

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 10 II

ER -

NSTX tangential divertor camera

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