=======
Testing
=======

Verification
============

Comparisons to known analytical results ASCOT5 should be able to reproduce.

.. rubric:: Neoclassical transport

.. figure:: ../figures/neoclassical.png
   :class: with-border
   :align: center
   :width: 300px

.. rubric:: Classical transport

.. rubric:: Collisional equilibrium and slowing-down distribution

.. rubric:: Conservation of :math:`\mu`, :math:`E_\mathrm{kin}`, and :math:`P_\mathrm{ctor}`

.. rubric:: Guiding center transformation

.. rubric:: Guiding center drifts and gyro-motion

Benchmarks
==========

Comparisons to other similar codes.

.. list-table:: Studies where ASCOT5 is compared to other codes.
   :widths: 50 50 25 50
   :header-rows: 1

   * - Code
     - Study
     - Publication
     - Notes
   * - SPIRAL
     - Alpha particle transport due to TF ripple in SPARC
     - `S. D. Scott, et al., Fast-ion physics in SPARC <https://doi.org/10.1017/s0022377820001087>`_
     - Good match.

Validation
==========

Comparisons to experiments.

.. list-table:: Studies where ASCOT5 output is compared to experimental results
   :widths: 50 50 50
   :header-rows: 1

   * - Study
     - Publication
     - Notes
   * - NBI current drive
     - `S. Mulas et al., *Validating neutral-beam current drive simulations in the TJ-II stellarator* <https://iopscience.iop.org/article/10.1088/1741-4326/acca92>`_
     - Good match with counter-injection but for the co-injection the ASCOT5 results is approximately half of the measured value.