Performance of straight tungsten mono-block test mock-ups using new high heat flux test facility at IPR

Paper describes the newly established high heat flux test facility (HHFTF) at IPR in India. The facility is being used to simulate typical steady state and transient thermal load conditions for testing Divertor plasma facing components using a 200 kW Electron Beam as heat source. After successful installation and commissioning of the HHFTF, two straight tungsten mono-block type test mock-ups are tested for several hundred thermal cycles with absorbed heat flux up to 11 MW/m2 (corresponding incident heat flux 20 MW/m2). Maximum temperature on tungsten surface observed using a two-color pyrometer is found to be 1150 °C for absorbed heat flux up to 11 MW/m2 (corresponding incident heat flux 20 MW/m2). Present paper gives a brief introduction to the HHFTF followed by experimental details and some results of high heat flux tests were performed on two straight tungsten mono-blocks.