Testing of the tungsten pin dump prototype at the JUDITH 2 testing facility

A prototype of tungsten pins beam dump was tested with high power electron beam at the JUDITH 2 facility. A maximum electron beam power of 40 kW was applied on a nominal beam spot area of 4 x 4 cm2. This corresponds to the highest achieved beam power density of 1.4 kW/cm2. Approximately 16% of the deposited energy was removed by radiation at the highest beam power values, corresponding to estimated surface temperature of approximate to 3100 K. The results of the irradiation test are presented. The further improvements of the prototype are discussed. This result provides an encouraging input for possible design of a full power beam dump for SARAF Phase II.