Disruption Analysis of PP, VV, and Components Summary: 1.Plasma shape from square to close to circular 2.Matched conductivity in brackets and bolts with measurements from Hatcher 1.Agree well with Hatcher results if same conductivity used for cyclic symmetric model 2.Increased toroidal current and disruption loads 3.P1-P5 Slow VDE 1.Linearized stress on primary plate 1.Membrane ~45 MPa 2.Membrane+bending ~65 MPa 2.Linearized stress on secondary plate should be smaller 4.P1-P5 Fast VDE 1.Similar pushing force and max moment 2.Bolt stress due to large pulling force

1/2 “ Plate P1 to P5 Slow VDE – Net Toroidal Current Matched Conductivity Model SS Conductivity Model TOSCA Current Flow 1 Volt 0 Volt 1 Volt Resistance Match by adjusting conductivity in bracket and bolts in 3D model Cyclic symmetric model using Hatcher measurement conductivity

P1 to P5 Slow VDE – Eddy Current at 10 ms – SS Conductivity Conductivity (S/m) Passive Plate5.07x10 7 (85% Cu) Bracket1.389x10 6 (SS) Bolts1.389x10 6 (SS) SS conductivity used for Brackets

P1 to P5 Slow VDE – Eddy Current at 10 ms – Matched Conductivity Conductivity (S/m) Passive Plate5.07x10 7 (85% Cu) Bracket2.1x10 6 Bolts5.0x10 7 Higher conductivity for brackets to match overall measurements of resistance provided by Ron Hatcher

1/2 “ Primary Plate P1 to P5 Slow VDE – EM Loads SS Conductivity Model Matched Conductivity Model

Disruption Force and Moment on ½” Secondary Plate SS Conductivity Model Matched Conductivity Model

Static Stress on Lower Primary Plate at 10 ms (Peak Disruption Loads) Linearized Stresses: Primary Plates Membrane ~45 MPa Mem+Bend~65 MPa 1.2 mm max deflection Stress Linearization

Static Stress on Lower Primary Plate at 20 ms Disruption Loads Linearized Stresses: Membrane ~31 MPa Mem+Bend~46 MPa

Static Stress on Lower Primary Plate at 40 ms Disruption Loads Linearized Stresses: Membrane ~4 MPa Mem+Bend~5.1 MPa

P1-P5 Fast Disruption Force and Moment on ½” Primary Plate Matched Conductivity Model Primary Plate Secondary Plate