Numerical modeling of cooling processes of a locally inclined target with a nirta solid compact target module

The work is devoted to the development of locally inclined targets for the production of medical radioisotopes, which can be used for high-intensity proton beam irradiations. The paper presents the results of a numerical analysis of thermal processes in locally inclined targets made of pressed molybdenum powder with a niobium target holder for the Nirta Solid Compact Model TS06 target module. Calculations were carried out using the Fluent Flow (Fluent) engineering package of the ANSYS Workbench 18.2 software platform for variants of targets with linear and axially symmetric grooves in the proton irradiation zone. It has been shown that using various models of locally inclined targets with a cooling area increased by 2.37 times, it is possible to achieve an increase in the irradiation current by 1.34–1.46 times compared to a standard flat target. An analysis of the distribution of heat flows and temperatures in the targets was carried out