Disruption Analysis of PP, VV, and Components Model includes bracket conducting path on back of PPs Disruption cases: Mid plane fast disruption (1 ms) VDE (P1 to P5 plasma center translation) and quench fast quench at P5 (1 ms) slow quench at P5 (40 ms - slow VDE in Titus’ case) worst case?
Conductivity (S/m)Skin depth Passive Plate5.07x10 7 (85% Cu)2.25 mm Bracket1.389x10 6 (SS)13.7 mm VV1.389x10 6 (SS)13.7 mm CS Casing0.7576x10 6 (SS)13.7 mm Electrical conductivity and skin depth (1ms disruption) Skin Depth at Fast Disruption The skin depth of copper passive plates is only ~2-2.5 mm during 1 ms plasma disruption Br (T)Bz (T) Without plasma With plasma t= End of disruption Background fields at center of lower PPPs (1.2, 0.72, -0.8) m Fast mid-plane centered disruption 2 MA/ms Back ground field OH, TF and PF coils (#79)
Eddy Current - Mid-plane Fast Disruption color – eddy current density arrow – eddy current flow
Eddy Current – P1-P5 VDE and Fast Disruption color – eddy current density arrow – eddy current flow
Eddy current at end of disruption Eddy Current in Front Face of PPs – Mid-plane Fast Disruption skin depth
Eddy current at end of disruption Eddy Current in Front Face of PPs – P1-P5 VDE then Fast Disruption skin depth No loop is observed
Eddy current at end of disruption Eddy Current in Back Face of PPs – Mid-plane Fast Disruption
Eddy current at end of disruption Eddy Current in Back Face of PPs – P1-P5 VDE then Fast Disruption
Eddy Current in Brackets – Mid-plane Fast Disruption
Total Toroidal Current Induced during Fast Disruption Lower PPP centerBr (T)Bz (T) coil background field (#79) with plasma at = with plasma at 1ms X (m)Y (m)Z (m) Background fields at center of lower PPPs (1.2, 0.72, -0.8) m Center of lower PPPs
Disruption Loads on PPPs – Mid-plane Fast Disruption X (m)Y (m)Z (m) Moment center of lower PPPs
Disruption Loads on PPPs – P1-P5 VDE then Fast Disruption X (m)Y (m)Z (m) Moment center of lower PPPs
Disruption Loads on PPPs – P1-P5 Slow VDE (40 ms Disruption) X (m)Y (m)Z (m) Moment center of lower PPPs
Mid Disruption Analysis of Upper PPs
Mid Disruption Analysis of Lower PPs
Mid Disruption Analysis of Upper PPs
Disruption Analysis of Upper PPs