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End Cap. Disk 4. Disk 3. Disk 2. Disk 1. Disk 0. Short strips. Long strips. 8. 6. Number of ASICS. Single Sided (Disk 2). 6. 20. 32. 8. 6. 24. 6. 20. 16. 24. 32. 20. Double Sided (Disk 2). The critical area is at disks 0 & 1.

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  1. End Cap

  2. Disk 4 Disk 3 Disk 2 Disk 1 Disk 0 Short strips Long strips 8 6 Number of ASICS Single Sided (Disk 2) 6 20 32 8 6 24 6 20 16 24 32 20 Double Sided (Disk 2) The critical area is at disks 0 & 1

  3. Materials Used: Simulation (W/mC)SLHC_Materials_MIWG_1_11_07!! ASICS & Wafers: 170-1*T(ºC) ISOTROPIC CC: Kx = 700, Ky = Kz = 35 AIR: K = 0.025 ISOTROPIC TPG: Kx = Ky = 1770-6*T(ºC), Kz = 6 (only double_sided) BeO: K = 260 ISOTROPIC Cool_Plate: Kx = Ky = 450, Kz = 30 (“JP slides” only double_sided) Hybrid: K = 1 ISOTROPIC Grease & Glue: K = 1.5 ISOTROPIC Cool_Pipe: K = 90 ISOTROPIC POCO_Foam: K = 45 ISOTROPIC (“US slides” only single_sided) Bonds: 195 ISOTROPIC CO2Pipe: ID = 2.7mm, OD = 3mm Need to review from: SLHC_Materials_MIWG_13_05_2008

  4. Double Sided Bridge supports on Si wafer Tsi = -8.35 ºC Factor x2

  5. Single Sided Bridge supports on Si wafer Factor x2 Tsi = -16.2 ºC

  6. Results

  7. Conclusions • Mechanical Simulation OK: • New dimensions for overlap & ASICS ok… • Thermal simulation in 3D! ok…but • Mechanical Simulation NOW: • Thermal distortion progressing… • Mechanical Stability (natural f) progressing… • Prototype to calibrate simulation… start thinking about… • need to optimize components to progressing… improve thermal safety factor NIKHEF & Gil Gilchriese …single sided?? …what about double sided?? • Catia/ProE/Ansys/Abaqus… progressing… • New Simulation Machine… progressing…

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