Heat flux test of various Be mockups for ITER FW development at Korea heat load test facility KoHLT-1

We established a heat load test facility using a graphite heating panel in 2008 in order to verify the integrity of a HIP bonded first wall. The facility is called KoHLT-1 and is currently in operation to test the Be mockups. The KoHLT-1 consists of a graphite heating panel, a box-type test chamber with water-cooling jackets, an electrical power supply, a water-cooling system, an evacuation system, an He gas system, and some diagnostics, which are equipped in an authorized laboratory with a special ventilation system for the Be treatment. We designed and fabricated several graphite heating panels to have various heating areas depending on the tested mockups. The heat fluxes on the two mockups are independently measured by a calorimetric method. We have carried out the thermal cycle tests of various Be mockups. The nominal heat flux was 0.625 MW/m² or 1.5 MW/m² depending on the mockup sizes.