1. End Cap

2. Long strips
Disk 0
Disk 1
Disk 2
Disk 3
Disk 4
Short 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 = ISOTROPIC
TPG: Kx = Ky = *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
CO2 Pipe: ID = 2.7mm, OD = 3mm
Need to review from:
SLHC_Materials_MIWG_13_05_2008

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

5. Single Sided
Bridge supports on Si wafer
Factor x2
Tsi = 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…