Plasma-wall interaction and plasma behaviour in the non-boronised all tungsten ASDEX Upgrade
نویسندگان
چکیده
منابع مشابه
Characterization of dust collected after plasma operation of all tungsten ASDEX Upgrade
The work presents results of the characterization of dust collected in ASDEX Upgrade, with the special emphasis on size, morphology, structure and composition of the dust particles. The dust particles were collected after 2009 campaign using the filtered vacuum technique. The structure and composition of the particles were examined by scanning electron microscopy (SEM) combined with energy-disp...
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Tungsten rods of 1×1×3mm were exposed at the outer divertor plate of ASDEX Upgrade using a manipulator system. Controlled melting of the W rod in H-mode discharges was induced by moving the outer strike point towards the W-rod position. Visible light emission of ejected W droplets was recorded by fast camera systems. The resulting increase of tungsten concentration in the confined plasma was co...
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Deuterium retention in the divertor tokamak ASDEX Upgrade is studied by surface analysis and gas balances. Comparing C and W plasma facing components, the deuterium content of deposits at the divertor plates is dropped by a factor of 13. At the outer divertor significant implantation into the W coating is found. Deposition at remote areas is reduced by a factor of 14. Gas balances for ITER rele...
متن کاملVideo tracking and post - mortem analysis of dust particles from all tungsten ASDEX - Upgrade
2D dust particle trajectories are extracted from fast framing camera videos of ASDEXUpgrade (AUG) by a new timeand resource-efficient code and classified into stationary hot spots, single-frame events and real dust particle fly-bys. Using hybrid global and local intensity thresholding and linear trajectory extrapolation individual particles could be tracked up to 80 ms. Even under challenging c...
متن کاملPlasma Dynamics and Plasma Wall Interaction
High power and particle deposition on target materials are encountered in many applications including magnetic and inertial fusion devices, nuclear and high energy physics applications, and laser and discharge produced plasma devices. Surface and structural damage to plasma-facing components due to the frequent loss of plasma confinement remains a serious problem for the Tokamak reactor concept...
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ژورنال
عنوان ژورنال: Journal of Nuclear Materials
سال: 2009
ISSN: 0022-3115
DOI: 10.1016/j.jnucmat.2009.01.225