 window of 3d magnetic field calculations Window of 3D Magnetic Field Calculations allows the user to work with three-dimensional model of a reactor. General view of the window is shown in the figure 1. With the help of this window user can: Geometrically the entire problem is divided into some number of models. There com be Finite Element Method (FEM 3D) and Shell models. Models are represented by a set of closed volumes called lumps. Volume is bounded by a set of faces. In order to set parameters of model geometric objects it is necessary it select them. To do so user can interact with the window in two main modes: orbit for viewing, selection for selection geometrical objects. Model uses right-hand Cartesian coordinate system. It is supposed that height directed along z-axis. 1 – View control tools 2 – Selection tools 3 – Object tree 4 – Parameter editor 5 – Viewing area   Figure 1 – General view of 3D model window  Window of 3D Magnetic Field Calculations allows the user to work with three-dimensional model of a reactor. General view of the window is shown in the figure 1. With the help of this window user can: Geometrically the entire problem is divided into some number of models. There com be Finite Element Method (FEM 3D) and Shell models. Models are represented by a set of closed volumes called lumps. Volume is bounded by a set of faces. In order to set parameters of model geometric objects it is necessary it select them. To do so user can interact with the window in two main modes: orbit for viewing, selection for selection geometrical objects. Model uses right-hand Cartesian coordinate system. It is supposed that height directed along z-axis. 3 – Object tree 5 – Viewing area   Figure 1 – General view of 3D model window