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Title: Edge Zonal Flows and Blob Propagation in Alcator C-Mod

Abstract

Here we describe recent measurements of the 2-D motion of turbulence in the edge and scrape-off layer (SOL) of the Alcator C-Mod tokamak. This data was taken using the outer midplane gas puff imaging (GPI) camera, which views a 6 cm radial by 6 cm poloidal region near the separatrix just below the outer midplane [1]. The data were taken in Ohmic or RF heated L-mode plasmas at 400,000 frames/sec for {approx}50 msec/shot using a Phantom 710 camera in a 64 x 64 pixel format. The resulting 2-D vs. time movies [2] can resolve the structure and motion of the turbulence on a spatial scale covering 0.3-6 cm. The images were analyzed using either a 2-D cross-correlation code (Sec. 2) or a 2-D blob tracking code (Sec. 3).

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1039418
Report Number(s):
PPPL-4646
TRN: US1202149
DOE Contract Number:  
DE-ACO2-09CH11466
Resource Type:
Conference
Journal Name:
NA
Additional Journal Information:
Conference: 38th European Physical Society Conference on Plasma Physics, Strasbourg, France (June 2011)
Publisher:
Conference Proceeding in Srasbourg, France
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CAMERAS; PHANTOMS; PHYSICS; PLASMA; TURBULENCE; C-Mod

Citation Formats

Zweben, S, Agostini, M, Davis, B, Grulke, O, Hager, R, Hughes, J, LaBombard, B, D'Ippolito, D A, Myra, J R, and Russell, D A. Edge Zonal Flows and Blob Propagation in Alcator C-Mod. United States: N. p., 2011. Web.
Zweben, S, Agostini, M, Davis, B, Grulke, O, Hager, R, Hughes, J, LaBombard, B, D'Ippolito, D A, Myra, J R, & Russell, D A. Edge Zonal Flows and Blob Propagation in Alcator C-Mod. United States.
Zweben, S, Agostini, M, Davis, B, Grulke, O, Hager, R, Hughes, J, LaBombard, B, D'Ippolito, D A, Myra, J R, and Russell, D A. Mon . "Edge Zonal Flows and Blob Propagation in Alcator C-Mod". United States. https://www.osti.gov/servlets/purl/1039418.
@article{osti_1039418,
title = {Edge Zonal Flows and Blob Propagation in Alcator C-Mod},
author = {Zweben, S and Agostini, M and Davis, B and Grulke, O and Hager, R and Hughes, J and LaBombard, B and D'Ippolito, D A and Myra, J R and Russell, D A},
abstractNote = {Here we describe recent measurements of the 2-D motion of turbulence in the edge and scrape-off layer (SOL) of the Alcator C-Mod tokamak. This data was taken using the outer midplane gas puff imaging (GPI) camera, which views a 6 cm radial by 6 cm poloidal region near the separatrix just below the outer midplane [1]. The data were taken in Ohmic or RF heated L-mode plasmas at 400,000 frames/sec for {approx}50 msec/shot using a Phantom 710 camera in a 64 x 64 pixel format. The resulting 2-D vs. time movies [2] can resolve the structure and motion of the turbulence on a spatial scale covering 0.3-6 cm. The images were analyzed using either a 2-D cross-correlation code (Sec. 2) or a 2-D blob tracking code (Sec. 3).},
doi = {},
journal = {NA},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {7}
}

Conference:
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