[en] The essential features of the EBTR described are: plasma engineering and physics, magnetics, mechanical design and neutronics. A time-dependent D-T plasma model was formulated to simulate the dynamic behavior of the system and to provide a framework for testing physics assumptions and models. The main goal in the magnetics areas was to satisfy the plasma constraints with a coil design which could be built with existing technology. Conceptual design of EBT reactors based on the modular concept (with identical superconducting coils) was studied for a wide range of sizes, i.e., for major radii between 30 m and 120 m. The nuclear performance of the blanket was evaluated using a one-dimensional analysis