Magnetics Reader¶

This page explains how to use the Magnetics Reader to visualize magnetic diagnostic geometries from the magnetics IDS.

Supported IDSs¶

The following structures are supported in the Magnetics Reader:

Using the Magnetics Reader¶

The Magnetics Reader functions similarly to the GGD Reader, with the same interface and data loading workflow. This means that the steps for loading an URI, an IDS, and selecting attributes are identical. Refer to the GGD Reader for detailed instructions on:

• Loading an URI: How to provide the file path or select a dataset.

• Loading an IDS: How to load a dataset and display the grid.

• Selecting attribute arrays: How to choose and visualize attributes.

Visualized Elements¶

Flux loops and Rogowski coils are visualized as closed polylines representing the wire geometry.

Poloidal and toroidal B-field probes are visualized as arrows indicating the sensor position and orientation. The length of the arrow can be controlled using the Probe Arrow Length parameter in the plugin settings.

Plugin Settings¶

The Magnetics Reader exposes the following settings under the Magnetics Reader Settings group:

• Probe Arrow Length (m) - Controls the total length of the arrow used to visualize each B-field probe.

• Extrude Full Flux Loops - When enabled, flux loops that contain only a single position point are extruded into a full toroidal circle at their (R, Z) position. When disabled, they are displayed as a single point.

• Full Flux Loop Resolution - Controls the number of points used to discretize single-point flux loops, when the Extrude Full Flux Loops option is enabled.

Example Case¶

The following figure uses the Magnetics Reader to visualize the geometries of the flux loops, rogowski coils, and B-field probes of magnetics from the following machine description NetCDF file: iter_md_magnetics_150100_5.nc.