Design of core and edge Thomson scattering systems for Korea Superconducting Tokamak Advanced Research tokamak

H. G. Lee; J. H. Lee; D. Johnson; R. Ellis; R. Feder; H. Park

doi:10.1063/1.1787924

Design of core and edge Thomson scattering systems for Korea Superconducting Tokamak Advanced Research tokamak

H. G. Lee, J. H. Lee, D. Johnson, R. Ellis, R. Feder, H. Park

PPPL Engineering

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8 Scopus citations

Abstract

The core and edge Thomson systems on Korea Superconducting Tokamak Advanced Research employ two different sets of lens collection optics. Their collection systems are positioned in the front end of a long reentrant cassette for optimum viewing coverage and optical throughput. Both systems collect the scattered light from a single tangential beam of multiple 50-Hz Nd: YAG lasers and image the scattering volume from core to edge with 40 spatial points. In order to obtain a higher resolution of 5 mm, the edge system has more spatial channels than the core system. Pressure-free heat shield windows, which will absorb the radiation heat flux, are mounted in front of large vacuum windows to protect them from the radiation heat load during long-pulse discharges.

Original language	English (US)
Pages (from-to)	3903-3905
Number of pages	3
Journal	Review of Scientific Instruments
Volume	75
Issue number	10 II
DOIs	https://doi.org/10.1063/1.1787924
State	Published - Oct 2004

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.1787924

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abstract = "The core and edge Thomson systems on Korea Superconducting Tokamak Advanced Research employ two different sets of lens collection optics. Their collection systems are positioned in the front end of a long reentrant cassette for optimum viewing coverage and optical throughput. Both systems collect the scattered light from a single tangential beam of multiple 50-Hz Nd: YAG lasers and image the scattering volume from core to edge with 40 spatial points. In order to obtain a higher resolution of 5 mm, the edge system has more spatial channels than the core system. Pressure-free heat shield windows, which will absorb the radiation heat flux, are mounted in front of large vacuum windows to protect them from the radiation heat load during long-pulse discharges.",

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AU - Lee, H. G.

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AU - Johnson, D.

AU - Ellis, R.

AU - Feder, R.

AU - Park, H.

PY - 2004/10

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AB - The core and edge Thomson systems on Korea Superconducting Tokamak Advanced Research employ two different sets of lens collection optics. Their collection systems are positioned in the front end of a long reentrant cassette for optimum viewing coverage and optical throughput. Both systems collect the scattered light from a single tangential beam of multiple 50-Hz Nd: YAG lasers and image the scattering volume from core to edge with 40 spatial points. In order to obtain a higher resolution of 5 mm, the edge system has more spatial channels than the core system. Pressure-free heat shield windows, which will absorb the radiation heat flux, are mounted in front of large vacuum windows to protect them from the radiation heat load during long-pulse discharges.

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Design of core and edge Thomson scattering systems for Korea Superconducting Tokamak Advanced Research tokamak

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