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Title: Laboratory Characterization of an Imaging Reflectometer System

Abstract

While microwave reflectometry has proven to be a sensitive tool for measuring electron density fluctuations in many circumstances, it has also been shown to have limited viability for core measurements and/or conditions of strong turbulence. To this end, a new instrument based on 2-D imaging reflectometry has been developed to measure density fluctuations over an extended plasma region in the TEXTOR tokamak. Laboratory characterization of this instrument has been performed using corrugated reflecting targets as an approximation to plasma reflections including 2-D turbulent fluctuations of various magnitude and poloidal wavenumber. Within this approximation, the imaging reflectometer can recover the spectral and spatial characteristics of the reflection layer lost to or otherwise inaccessible to conventional techniques.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
809962
Report Number(s):
PPPL-3767
TRN: US0302660
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 14 Jan 2003
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON DENSITY; FLUCTUATIONS; PLASMA; REFLECTION; TARGETS; TEXTOR TOKAMAK; TURBULENCE; VIABILITY; MICROWAVES; REFLECTOMETER

Citation Formats

Munsat, T, Mazzucato, E, Park, H, Domier, C W, Luhmann, Jr, N C, Donne, A J.H., and de Pol, M van. Laboratory Characterization of an Imaging Reflectometer System. United States: N. p., 2003. Web. doi:10.2172/809962.
Munsat, T, Mazzucato, E, Park, H, Domier, C W, Luhmann, Jr, N C, Donne, A J.H., & de Pol, M van. Laboratory Characterization of an Imaging Reflectometer System. United States. https://doi.org/10.2172/809962
Munsat, T, Mazzucato, E, Park, H, Domier, C W, Luhmann, Jr, N C, Donne, A J.H., and de Pol, M van. 2003. "Laboratory Characterization of an Imaging Reflectometer System". United States. https://doi.org/10.2172/809962. https://www.osti.gov/servlets/purl/809962.
@article{osti_809962,
title = {Laboratory Characterization of an Imaging Reflectometer System},
author = {Munsat, T and Mazzucato, E and Park, H and Domier, C W and Luhmann, Jr, N C and Donne, A J.H. and de Pol, M van},
abstractNote = {While microwave reflectometry has proven to be a sensitive tool for measuring electron density fluctuations in many circumstances, it has also been shown to have limited viability for core measurements and/or conditions of strong turbulence. To this end, a new instrument based on 2-D imaging reflectometry has been developed to measure density fluctuations over an extended plasma region in the TEXTOR tokamak. Laboratory characterization of this instrument has been performed using corrugated reflecting targets as an approximation to plasma reflections including 2-D turbulent fluctuations of various magnitude and poloidal wavenumber. Within this approximation, the imaging reflectometer can recover the spectral and spatial characteristics of the reflection layer lost to or otherwise inaccessible to conventional techniques.},
doi = {10.2172/809962},
url = {https://www.osti.gov/biblio/809962}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 14 00:00:00 EST 2003},
month = {Tue Jan 14 00:00:00 EST 2003}
}