@article{oai:repo.qst.go.jp:00049589,
 author = {M., Rubel (Royal Institute of Technology, Sweden) and A., Widdowson (Culham Centre for Fusion Energy, UK) and J., Grzonka (Warsaw University of Technology, Poland) and E., Fortuna-Zalesna (Warsaw University of Technology, Poland) and Sunwoo, Moon (Royal Institute of Technology, Sweden) and P., Petersson (Royal Institute of Technology, Sweden) and N., Ashikawa (National Institute for Fusion Science) and Asakura, Nobuyuki and Hamaguchi, Dai and Y., Hatano (Toyama University) and Isobe, Kanetsugu and S., Masuzaki (National Institute for Fusion Science) and Kurotaki, Hironori and Y., Oya (Shizuoka University) and Oyaizu, Makoto and M., Tokitani (National Institute for Fusion Science) and Contributors, JET and Asakura, Nobuyuki and Hamaguchi, Dai and Isobe, Kanetsugu and Kurotaki, Hironori and Oyaizu, Makoto},
 issue = {11},
 journal = {Fusion Engineering and Design},
 month = {Nov},
 note = {Operation of the JET tokamak with beryllium and tungsten ITER-like wall provides unique opportunity for detailed studies on dust generation: quantity, morphology, location, etc. The programme carried out in response to ITER needs for safety assessment comprises: (i) remotely controlled vacuum cleaning of the divertor; (ii) local sampling of loosely bound matter from plasma-facing components (PFC); (iii) collection of mobilized dust on various erosion-deposition probes located in the divertor and in the main chamber. Results of comprehensive analyses performed by a number of complementary techniques, e.g. a range of microscopy methods, electron and ion spectroscopy, liquid scintillography and thermal desorption, are summarized by following points:
(a) Total amount of dust collected by vacuum cleaning after three campaigns is about 1–1.4 g per campaign (19.1–23.5 h plasma operation), i.e. over 100 times smaller than in JET operated with carbon walls (i.e. in JET-C).
(b) Two major categories of Be dust are identified: flakes of co-deposits formed on PFC and droplets (2–10 μm in diameter). Small quantifies, below 1 g, of Be droplets and splashes are associated mainly with melting of beryllium limiters.
(c) Tungsten dust occurs mainly as partly molten flakes originating from the W-coated tiles.},
 pages = {579--586},
 title = {Dust Generation in Tokamaks: Overview of Beryllium and Tungsten Dust Characterisation in JET with the ITER-Like Wall},
 volume = {136},
 year = {2018}
}