Trilateral Euregio Cluster A.Kreter, V.Philipps et al "Retention in W, Mo and graphite samples simultaneously exposed to SOL plasma in TEXTOR" Assoziation.

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Presentation transcript:

Trilateral Euregio Cluster A.Kreter, V.Philipps et al "Retention in W, Mo and graphite samples simultaneously exposed to SOL plasma in TEXTOR" Assoziation EURATOM - Forschungszentrum Jülich Institut für Energieforschung 4 - Plasmaphysik 1 Retention in tungsten, molybdenum and graphite samples simultaneously exposed to SOL plasma in TEXTOR A.Kreter, V.Philipps, S.Droste, M.Freisinger, O.Schmitz and TEXTOR team Institut für Energieforschung - Plasmaphysik, Forschungszentrum Jülich, Association EURATOM-FZJ, Trilateral Euregio Cluster, Germany 10th ITPA committee meeting on SOL/divertor physics Avila,

Trilateral Euregio Cluster A.Kreter, V.Philipps et al "Retention in W, Mo and graphite samples simultaneously exposed to SOL plasma in TEXTOR" Assoziation EURATOM - Forschungszentrum Jülich Institut für Energieforschung 4 - Plasmaphysik 2 Exposure of roof-like test limiter with stripes Results and comparison with available database Limiter with CFC and graphite 32 reproducible Ohmic discharges in 80% D 177 s total duration Limiter tip at LCFS (0.46 m) n e LCFS 1·10 19 m -3 ; T e LCFS 45 eV; T i T e LCFS 2.9·10 25 D/m 2 ; SOL ( ) 12 mm T lim 500 K Similar retention for both CFCs and graphite Similar retention to CFC N11 exposed in PISCES-A

Trilateral Euregio Cluster A.Kreter, V.Philipps et al "Retention in W, Mo and graphite samples simultaneously exposed to SOL plasma in TEXTOR" Assoziation EURATOM - Forschungszentrum Jülich Institut für Energieforschung 4 - Plasmaphysik 3 Exposure of roof-like test limiter with stripes Castellated test limiter in TEXTOR NB31 DMS780 EK98 NB31 DMS780 EK98 Double roof limiter EK98 Mo W W W C Samples with highest fluence analysed by TDS Results of TDS Similar retention in EK98, Mo and W of ~ D/m 2

Trilateral Euregio Cluster A.Kreter, V.Philipps et al "Retention in W, Mo and graphite samples simultaneously exposed to SOL plasma in TEXTOR" Assoziation EURATOM - Forschungszentrum Jülich Institut für Energieforschung 4 - Plasmaphysik 4 Comparison with available data PISCES-A, old and new TEXTOR data Lab data by O.Ogorodnikova 200 eV beam, K New TEXTOR W datapoint Data fit reasonable with available database

Trilateral Euregio Cluster A.Kreter, V.Philipps et al "Retention in W, Mo and graphite samples simultaneously exposed to SOL plasma in TEXTOR" Assoziation EURATOM - Forschungszentrum Jülich Institut für Energieforschung 4 - Plasmaphysik 5 Summary Graphite, Mo and W samples simultaneously exposed in TEXTOR for fluences of 1.6·10 25 D/m 2 at T=500 K Similar retention in the samples of ~ D/m 2