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Title: Plasma turbulence imaging using high-power laser Thomson scattering

Abstract

The 2-D structure of plasma density turbulence in a magnetically confined plasma can potentially be measured using a Thomson scattering system made from components of the Nova laser of LLNL. For a plasma such as NSTX at PPPL, the laser would form an {approximately}10 cm wide plane sheet beam passing vertically through the chamber across the magnetic field. The scattered light would be imaged by a CCD camera viewing along the direction of the magnetic field. The laser energy required to make 2-D images of density turbulence is in the range 1--3 kJ, which can potentially be obtained from a set of frequency-doubled Nd:Glass amplifiers with diameters in the range of 208--315 mm. A laser pulse width of 100 nsec would be short enough to capture the highest spatial frequency components of the expected density fluctuations.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
757323
Report Number(s):
PPPL-3461
TRN: US0003706
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 8 Jun 2000
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA DIAGNOSTICS; TURBULENCE; PLASMA DENSITY; THOMSON SCATTERING; NSTX DEVICE; LASER RADIATION; IMAGES

Citation Formats

S.J. Zweben, J. Caird, W. Davis, D.W. Johnson, and B.P. LeBlanc. Plasma turbulence imaging using high-power laser Thomson scattering. United States: N. p., 2000. Web. doi:10.2172/757323.
S.J. Zweben, J. Caird, W. Davis, D.W. Johnson, & B.P. LeBlanc. Plasma turbulence imaging using high-power laser Thomson scattering. United States. doi:10.2172/757323.
S.J. Zweben, J. Caird, W. Davis, D.W. Johnson, and B.P. LeBlanc. Thu . "Plasma turbulence imaging using high-power laser Thomson scattering". United States. doi:10.2172/757323. https://www.osti.gov/servlets/purl/757323.
@article{osti_757323,
title = {Plasma turbulence imaging using high-power laser Thomson scattering},
author = {S.J. Zweben and J. Caird and W. Davis and D.W. Johnson and B.P. LeBlanc},
abstractNote = {The 2-D structure of plasma density turbulence in a magnetically confined plasma can potentially be measured using a Thomson scattering system made from components of the Nova laser of LLNL. For a plasma such as NSTX at PPPL, the laser would form an {approximately}10 cm wide plane sheet beam passing vertically through the chamber across the magnetic field. The scattered light would be imaged by a CCD camera viewing along the direction of the magnetic field. The laser energy required to make 2-D images of density turbulence is in the range 1--3 kJ, which can potentially be obtained from a set of frequency-doubled Nd:Glass amplifiers with diameters in the range of 208--315 mm. A laser pulse width of 100 nsec would be short enough to capture the highest spatial frequency components of the expected density fluctuations.},
doi = {10.2172/757323},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {6}
}