TECHNOLOGY TRANSFER 8 Copyright Assertion Highlights Copyright is a legal right that grants the creators of original work, such as software, exclusive rights for its use and distribution. INL employees assign such rights to the company as a condition of employment. In accordance with BEA’s contract with DOE, all copyright rights are assigned to DOE unless BEA specifically requests authority to assert copyright. BEA requests the permission to assert copyright on software it intends to license via open source and traditional agreements. During FY 2017, INL received permission to assert copyright on six software programs. Since 2005, INL has been authorized by DOE to assert copyright protection on more than 91 pieces of software. MARMOT Mesoscale Simulation Code MARMOT is a thermo-mechanical code that models nuclear fuel performance at the engineering scale, specifically microscopic fuel changes during irradiation. Its purpose is to predict changes in the microstructure and material properties of nuclear fuels and claddings from stress, temperature, and irradiation damage. Using the finite element method, MARMOT solves the phase field equations coupled to solid mechanics and heat conduction.The MARMOT repository contains export-controlled code such as nuclear-specific material models. RATTLESNAKE Multi-level, Multi-scale RadiationTransport Software Modeling radiation transport with accuracy is essential to designing safe nuclear reactors and facilities. Rattlesnake is a radiation transport solver that can model neutron, photon and thermal radiation interactions with background materials. It describes how radiation particles interact with background media and field variables such as temperature and material density to compute various quantities of interest, including the radiation flux distribution, variable reaction rate, and radiation-induced power profile. CellRAD CellRAD is a radiation detection application that can be run on an off-the-shelf unmodified Android cellphone. It uses the phone’s camera to detect gamma radiation from unexpected or illicit radioactive material.While the lens is covered to keep out visible light, gamma rays interact with the phone’s camera system to produce small traces of activated pixels. INL has developed algorithms that use this information to calculate approximate gamma ray energy levels and more accurate radiation exposure levels. The Rattlesnake application (left) can simulate radiation transport. The MARMOT application (de- velopment team above) models nuclear fuel performance on the microscopic scale.