ENEA activities in 2021: W-based coatings with pre-defined properties (incl. SEM, AFM, TDS characterization) produced for analyses and plasma experiments – plans and capabilities
Speaker:
Matteo Passoni
columnar and porous W layers produced in FP8 --> morphology and grain size can be varied
multilayer structures to mimic re-deposits --> GyM, (MAGNUM, PSI-2, others)
rough and/or patterned surfaces --> also more complex structures can be produced --> GyM and/or tokamaks
Francesco: TDS available (size limit as in the past)
Cedric: interested in Raman analyses of pyramid structures
Sebastijan: MAGNUM experiments on re-deposited W --> one wants to produce proxies to those
Eduardo: what structures can be produced? Different aspect ratios of structures, chemical etching
Focus in 2021 on homework of re-deposits and production of various morphologies for GyM
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IAP activities in 2021: Be-based coatings with pre-defined properties (incl. SEM, XRD, GDOES, TDS characterization) produced for analyses and plasma experiments – plans and capabilities
Be films: mixtures, sample heating, baking simulations, gas inclusions, roughness
Analysis capabilities: SEM, XRD, TDS
Sebastijan: LID-QMS, LIBS request for samples --> discussions with Hennie needed; low-temperature peak, can it be due to BeDx? Or rather sample instability? Test samples by Raman if that really is BeDx --> one clear focus point! (temperature dependence!?)
Cedric: high-temperature peaks, due to contamination? or other elements in the sample structure, may also be multitude of defects?
Distinguish between trapping and de-trapping due to evaporation by TDS!
Focus on understanding the data from samples and only produce samples for LIBS, combine the work with what we have learnt from JET --> involve Jari in the discussions --> action on AH
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IAP activities in 2021: W-based coatings with pre-defined properties (incl. SEM, XRD, GDOES, TDS characterization) produced for analyses and plasma experiments – plans and capabilities
New W-based coatings: vary the grain size (=morphoplogy)
Experiments in GyM? Comparative studies would be of interest --> action on AH
Cedric: Ne and He release from samples? Trapping mechanisms? Are there bubbles around or something else --> send samples to CEA for further analyses --> action on AH to check the status
Bobi: collaboration with Edi --> action on Bobi and Edi to discuss
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CEA activities in 2021: Raman, SEM, and CLSM characterization of selected Be and W reference samples – plans and capabilities
Confocal and Raman capabilities: CLSM for large surfaces (witth varying roughnesses), SEM and FIB also available --> identify what is under the surfaces
Raman useful for Be, BeD, BeO, WO, trapped D2
Interested in H-containing samples to detect BeH/BeD formation --> action on Bobi
Bobi: fatty acids found on some samples --> contamination to be clarified
Jari: any other samples than JET limiter ones? --> wall probes to be studied! --> action on Jari
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CIEMAT activities in 2021: SEM and SIMS characterization of selected W reference samples – plans and capabilities