Abstract
Models of a liquid-metal target of an acceleratorcontrolled system have been experimentally studied at the Nizhny Novgorod State Technical University to develop an optimal design of the flow part of the target. The main explored variants of liquid-metal targets are: - Design with a diaphragm (firm-and-impervious plug) mounted on the pipe tap of particle transport from the accelerator cavity to the working cavity of the liquid-metal target. - Design without a diaphragm on the pipe tab of particle transport from the accelerator. The study was carried out in a high-temperature liquidmetal test bench under the conditions close to full-scale ones: the temperature of the eutectic lead-bismuth alloy was 260℃- 400℃, the coolant mass flow was 5-80 t/h, and the rarefaction in the gas cavity was 10^5 Pa, the coefficient of geometric similarity equal to 1. The experimental studies of hydrodynamic characteristics of flow parts in the designs of targets under full-scale conditions indicated high efficiency of a target in triggering, operating, and deactivating modes. Research and technology instructions for designs of the flow part of the liquid-metal target, the target design as a whole, and the target circuit of accelerator-controlled systems were formulated as a result of the studies.
