Thomson Scattering Diagnostic Dot File

Table of Contents

• Introduction
• Keywords
• Chord Specification
• Example File
• Programmers Reference

Introduction

Diagnostic dot files specify geometric and auxiliary information about each diagnostic. Parsing of a diagnostic dot file begins by searching for a valid keyword. All lines before a valid keyword is reached are ignored allowing for comments and other information to be inserted in the file. Once a keyword is reached, the parsing becomes strict. The diagnostic description format is dependant on the specific keyword. All diagnostic dot files must end with an end_of_file keyword.

This document contains information about the thomson scattering point specifications. Points are specified in a structured text file. This file is read in by the v3fit_input::thscte_dot_filename variable of the name list input file. Points are specified as a verticies in either meters or radians.

Keywords

thscte_XYZ thscte_XYZ_te	A thomson scattering point specified in Cartesian coordinates measuring electron temperature.
thscte_RPhiDegZ thscte_RPhiDegZ_te	A thomson scattering point specified in Cylindrical coordinates measuring electron temperature.
thscte_XYZ_ne	A thomson scattering point specified in Cartesian coordinates measuring electron denisty.
thscte_RPhiDegZ_ne	A thomson scattering point specified in Cylindrical coordinates measuring electron denisty.
thscte_XYZ_pres	A thomson scattering point specified in Cartesian coordinates measuring plasma pressure.
thscte_RPhiDegZ_pres	A thomson scattering point specified in Cylindrical coordinates measuring plasma pressure.

Chord Specification

All thomson scattering points are specified in the following manner.

key_word
name(STRING len:data_parameters::data_short_name_length)
x1(REAL) y1(REAL) z1(REAL)


Example File

!  A thomson scattering point specified in Cartesian coordinates measuring electron temperature.
thscte_xyz_te
tsc001
1.0 0.0 0.0
 
!  A soft x-ray chord specified in Cylindrical coordinates measuring electron denisty.
thscte_rphidegz_ne
tsc002
1.0 0.0 0.0
 
!  All files must end with
end_of_file

Programmers Reference

Reference material for the coding to parse these files can be found in the signal_dot and thscte_dot modules.