High heat flux facility GLADIS:

Abstract

The new ion beam facility GLADIS started the operation at IPP Garching. The facility is equipped with two individual 1.1 MW power ion sources for testing actively cooled plasma facing components under high heat fluxes. Each ion source generates heat loads between 3 and 55 MW/m 2 with a beam diameter of 70 mm at the target position. These parameters allow effective testing from probes to large components up to 2 m length. The high heat flux allows the target to be installed inclined to the beam and thus increases the heated surface length up to 200 mm for a heat flux of 15 MW/m 2 in the standard operating regime. Thus the facility has the potential capability for testing of full scale ITER divertor targets. Heat load tests on the WENDELSTEIN 7-X pre-series divertor targets have been successfully started. These tests will validate the design and manufacturing for the production of 950 elements.

Tungsten erosion under combined hydrogen/helium high heat flux loading

“…We devised a method to measure erosion in the micrometre range on actively cooled tungsten samples exposed to a H/He beam in the high heat flux device GLADIS [12]. A detailed description of the method and analysis tools as well as the original publication of the erosion data can be found in [13].…”

Recent progress in research on tungsten materials for nuclear fusion applications in Europe

“…While spraying in air, in-flight oxidation of the molten metallic powders is probably the main cause of this [15]. Vacuum plasma spraying can be used [16], but with significant equipment and operational costs. In the current investigation, plasma spraying with a hybrid water-argon plasma torch, including inert gas shrouding, was explored [17].…”

Investigation of European tungsten materials exposed to high heat flux H/He neutral beams

“…The neutral beam facility GLADIS operates with an H, He or mixed H/He beam and has the capability to apply heat fluxes ≤45 MW m -² for 45 s pulse length [6]. The full width of the Gaussian beam at 80% central power density is 70 mm.…”