6. Particle Restart File Format

The current version of the particle restart file format is 2.0.

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Attributes

• filetype (char[]) – String indicating the type of file.

• version (int[2]) – Major and minor version of the particle restart file format.

• openmc_version (int[3]) – Major, minor, and release version number for OpenMC.

• git_sha1 (char[40]) – Git commit SHA-1 hash.

Datasets

• current_batch (int) – The number of batches already simulated.

• generations_per_batch (int) – Number of generations per batch.

• current_generation (int) – The number of generations already simulated.

• n_particles (int8_t) – Number of particles used per generation.

• run_mode (char[]) – Run mode used, either ‘fixed source’, ‘eigenvalue’, or ‘particle restart’.

• id (int8_t) – Unique identifier of the particle.

• weight (double) – Weight of the particle.

• energy (double) – Energy of the particle in eV for continuous-energy mode, or the energy group of the particle for multi-group mode.

• xyz (double[3]) – Position of the particle.

• uvw (double[3]) – Direction of the particle.

• time (double) – Time of the particle in [s].