thermal analysis of outer tracker modules and rod
DESCRIPTION
Thermal Analysis of Outer Tracker Modules and Rod. Susanne Kyre UCSB. TK Module design parameters from Nov 2009 TUPO presentation by Hans Postema. 2.5 cm strip length Sensor glued on 2 TPG strips TPG strips on the backplane side TPG strips connected to cooling block on cooling pipe - PowerPoint PPT PresentationTRANSCRIPT
Susanne Kyre UCSB 1
Thermal Analysis of Outer Tracker Modules and Rod
Susanne KyreUCSB
2/8/2010
Susanne Kyre UCSB 2
TK Module design parametersfrom Nov 2009 TUPO presentation by Hans Postema
• 2.5 cm strip length• Sensor glued on 2 TPG strips• TPG strips on the backplane
side• TPG strips connected to
cooling block on cooling pipe• Hybrid with apv’s glued on
sensor, strip side, above the TPG strip
• DC-DC converter glued on the TPG strip of the sensor.
• One DC-DC converter powers 2 hybrids
2/8/2010
Susanne Kyre UCSB 3
Dimensions and MaterialsPart Material Area [mm2] Thickness [mm]
thermal conductivity [W/mK] Power [mW]
Sensor Silicon 84.5 x 100.3 0.2 148 310
Chip Silicon 10 x 12 0.2 148 125
DC-DC coil Silicon 12 x 12 9 148 225
Hybrid G10 and copper85 x 14
107 x 30 (ears) 0.830.8 in plane;
0.37 out of plane
Support strip TPG 116 x 14 11500 in plane; 20 out of plane
Epoxythermally conductive
epoxy all glue joints .05 1.5
Cooling Block Beryllium Oxide13.5 x 14
1.7mm cooling tube dia. 4 248
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Susanne Kyre UCSB 4
Module FEA
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Susanne Kyre UCSB 5
Result of steady state thermal analysisMaximum Temperature: -27.0°C (at center readout chips on hybrid #2)
2/8/2010
Susanne Kyre UCSB 6
Result of steady state thermal analysisMaximum Sensor temperature: -28.3°C
2/8/2010
Susanne Kyre UCSB 7
TK Rod design parameters• 12 Modules per rod (6 facing up, 6 facing down)• One cooling loop per rod• Cooling block temperature at inlet: -30°C• Cooling block temperature at outlet: -25°C• Sensor, DC-DC and Readout chip power as in Module analysis
2/8/2010
8
Cooling block temperatures• From Module analysis: Heat flux through cooling block-pipe
interface differs with cooling block location• • Assume: ΔT between cooling blocks is proportional to
difference in heat flux between cooling blocks
2/8/2010 Susanne Kyre UCSB
mmmW 9.9
231 mmmW9.12
22 mmmW
24 1.11
Susanne Kyre UCSB 9
Rod FEA
2/8/2010
Susanne Kyre UCSB 10
Result of steady state thermal analysisMaximum Temperature: -24.0°C at hybrid #2 on module closet to inlet/outlet
2/8/2010
Max. Temp
Susanne Kyre UCSB 11
Result of steady state thermal analysisMaximum Sensor temperature:-25.1°C at sensor closest to inlet/outletThis sensor also has the largest temperature gradient: 3.0°C across the sensor
2/8/2010