Namelist v3r_coils definition

Table of Contents

• Introduction
• Namelist Variables
  • Filename Variables
  • Control Variables
  • Super Conducting Coils
  • Response Grid Variables
  • Tilt and Shift Variables
• Example File
• Programmers Reference

Introduction

This page documents the contents of a namelist input file. V3RFUN namelist variables are defined in the v3r_coils common block.

Namelist Variables

Input variable

Description

Code Reference

Filename Variables

name_coils_dot	Filename for the field coil discription.	v3rfun_input::name_coils_dot
name_diagnostic_dot	Filename for the field diagnostic coil discription.	v3rfun_input::name_diagnostic_dot

Control Variables

idrfun	V3RFUN identification for the run.	v3rfun_input::idrfun
lstell_sym	Control for stellarator symmetry.	v3rfun_input::lstell_sym
l_read_coils_dot	Control to ignore the coils dot file.	v3rfun_input::l_read_coils_dot
use_con_shell	Computes the response function for a conducting shell.	v3rfun_input::use_con_shell
len_integrate_ddc	Integration length in meters.	v3rfun_input::len_integrate_ddc

Super Conducting Coils

is_super_con

Flags a coil as a super conductor. Super conducting are steady state so integated magnetic won't pick up an induced signal.

v3rfun_input::is_super_con

Response Grid Variables

ir	Number of radial grid points.	v3rfun_input::ir
jz	Number of vertical grid points.	v3rfun_input::jz
kp	Number of toroidal grid points.	v3rfun_input::kp
kp_shell	Number of shell toroidal grid points.	v3rfun_input::kp_shell
n_field_periods_nli	Number of field periods.	v3rfun_input::n_field_periods_nli
rmin	Minimum R for plasma grid.	v3rfun_input::rmin
rmax	Maximum R for plasma grid.	v3rfun_input::rmax
zmin	Minimum Z for plasma grid.	v3rfun_input::zmin
zmax	Maximum Z for plasma grid.	v3rfun_input::zmax
major_radius	Shell major radius for shell grid.	v3rfun_input::major_radius
minor_radius	Shell minor radius for shell grid.	v3rfun_input::minor_radius

Tilt and Shift Variables

cg_shift_1	Vector to shift all the coils before rotation.	v3rfun_input::cg_shift_1
cg_shift_2	Vector to shift all the coils after rotation.	v3rfun_input::cg_shift_2
cg_rot_xcent	Position of center of rotation.	v3rfun_input::cg_rot_xcent
cg_rot_theta	Spherical polar angle to specify axis of rotation.	v3rfun_input::cg_rot_theta
cg_rot_phi	Spherical azimuthal angle to specify axis of rotation.	v3rfun_input::cg_rot_phi
cg_rot_angle	Angle to rotate about axis of rotation. Left hand convention. Put left thumb along axis of rotation, fingers indicate direction of positive rotation.	v3rfun_input::cg_rot_angle
l_rot_coil_center	Controls the center of rotation. True Use current-averaged center of coil-group for center of rotation. False Use position specified in cg_rot_xcent for center of rotation.	v3rfun_input::l_rot_coil_center

Example File

! Example V3RFUN input file.
&v3fit_main_nli
  idrfun = 'example'
  name_coils_dot = 'coils.example'
  name_diagnostic_dot = 'diagnostic.example.dot'
  rmin=0.98
  rmax=2.02
  zmin=-0.52
  zmax=0.52
  ir=101
  jz=101
  kp=32
  lstell_sym =  f
 
  use_con_shell = t
  major_radius = 1.5
  minor_radius = 0.525
  kp_shell = 128
/

Programmers Reference

Reference material for the coding to implement this namelist is found in the v3rfun_input module.