Code

Intellectual Property Notice

Celeritas is licensed under the Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0) or the MIT license, (LICENSE-MIT or http://opensource.org/licenses/MIT), at your option.

Copyrights and patents in the Celeritas project are retained by contributors. No copyright assignment is required to contribute to Celeritas, but by submitting content in a pull request, you are confirming that you have the right to make your contribution to Celeritas, and that if you are making your contribution in the course of your employment, that such contributions are authorized by your employer.

Celeritas was originally developed in 2020 by developers at Oak Ridge National Laboratory (UT-Battelle, LLC), Fermi National Accelerator Laboratory (Fermi Research Alliance, LLC), Argonne National Laboratory (UChicago Argonne, LLC), and Lawrence Berkeley National Laboratory (University of California).

SPDX usage

Individual files contain SPDX tags instead of the full license text. This enables machine processing of license information based on the SPDX License Identifiers that are available here: https://spdx.org/licenses/

Files that are dual-licensed as Apache-2.0 OR MIT contain the following text in the license header:

SPDX-License-Identifier: (Apache-2.0 OR MIT)

Software derived from external sources used in Celeritas

Certain files in Celeritas are derived from external projects. The top of each such file contains the attribution, the license’s SPDX identifier, and a link to the license. Full copies of the licenses are included in the online user documentation.