[en] The design of a liquid-hydrogen target comprising a hydrogen liquefier and a target head is described. The hydrogen is liquefied by condensation of a helium-vapor cooled surface of a heat exchanger housed inside a condenser. The hydrogen liquefaction efficiency has been measured. The obtained liquefaction coefficient practically coincides with the design value and amounts at the liquefaction rate of up to 0.35 l/hr to 1 l of liquid hydrogen per 2.8 l of liquid helium. The high efficiency of the liquefier and the low evaporation rate of hydrogen from the target, which is about 0.03 to 0.05 m³/hr under normal conditions, have made it possible to extend the time interval between repeated fillings of helium. Now the useful time of the liquid-hydrogen target operation is over two days