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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
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Thermal Analysis of Outer Tracker Modules and Rod Susanne Kyre UCSB Susanne Kyre UCSB
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 Susanne Kyre UCSB
Dimensions and Materials Susanne Kyre UCSB
Module FEA Susanne Kyre UCSB
Result of steady state thermal analysis Maximum Temperature: -27.0°C (at center readout chips on hybrid #2) Susanne Kyre UCSB
Result of steady state thermal analysis Maximum Sensor temperature: -28.3°C Susanne Kyre UCSB
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 Susanne Kyre UCSB
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 Susanne Kyre UCSB
Rod FEA Susanne Kyre UCSB
Result of steady state thermal analysis Maximum Temperature: -24.0°C at hybrid #2 on module closet to inlet/outlet Max. Temp Susanne Kyre UCSB
Result of steady state thermal analysis Maximum Sensor temperature: -25.1°C at sensor closest to inlet/outlet This sensor also has the largest temperature gradient: 3.0°C across the sensor Susanne Kyre UCSB