Spacing of Cu clamp = 10” Clamp plate width = 2.5”, thickness = 0.375” Thickness of conductor insulation = 0.03” Thickness of coil ground wrap = 0.03”

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Presentation transcript:

Spacing of Cu clamp = 10” Clamp plate width = 2.5”, thickness = 0.375” Thickness of conductor insulation = 0.03” Thickness of coil ground wrap = 0.03” Copper sheet width = 7.5”, thickness = 0.085” Copper mesh width = 7.5”, thickness = ” Modular Coil Cooling Option #7 – Cooling Tubes Along the Perimeter of the Clamp Conductor cable: 75% copper 25% epoxy Temperature constraint = 80K Copper clamp Copper sheet Copper mesh Copper sheet

FEA Model Initial Temperature = 85K Thermal conductivity of Cu mesh is 50% of Cu All surfaces are fully contacted Temperature-dependent material Properties Gap Copper mesh Copper sheet

Cryogenics Material Properties Specific Heat (J/kg-K) 80K100K150K200K Cable Cooling plate Insulation Shell & T-beam Thermal Conductivity (W/m-K) 80K 100K150K200K Cable Cooling plate Outer Insulation Inner Insulation Shell & T-beam Coil Currents and Ohmic Heating Current profile from web address:

Temperature Plots at The End of 1 st Heating Cycle -- Based on Kapton and CTD101K as Conductor Insulation -- Interior 20% Kapton, Exterior 10% Kapton Thermal conductivity Kapton CTD-101K 80 K0.128 W/m-K W/m-K 100 K0.142 W/m-K W/m-K 150 K0.163 W/m-K W/m-K 200 K0.175 W/m-K W/m-K 10% Kapton 20% Kapton 80 K0.236 W/m-K W/m-K 100 K0.263 W/m-K W/m-K 150 K0.309 W/m-K W/m-K 200 K0.337 W/m-K W/m-K Equivalent thermal conductivity: L e /K e = L 1 /K 1 + L 2 /K 2 10% Kapton20% Kapton

Temperature Plots at The End of 1 st Cooling Cycle -- Based on Kapton and CTD101K as Conductor Insulation -- Interior 20% Kapton, Exterior 10% Kapton

Conductor Temperature at The End of 1 st Cooling Cycle -- Based on Kapton and CTD101K as Conductor Insulation -- Interior 20% Kapton, Exterior 10% Kapton Equivalent thermal conductivity: L e /K e = L 1 /K 1 + L 2 /K 2 10% Kapton20% Kapton

Temperature Plots at The End of 1 st Cooling Cycle for Various Widths of Cu Sheet and Cu Mesh 25% 50%75% 100%

Maximum Temperatures on Modular Coil Components Maximum Temperature Data (K)