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Thermal Analysis of Outer Tracker Modules and Rod Design Parameters

This presentation by Susanne Kyre from UCSB details the thermal analysis of outer tracker modules and rod design parameters, based on data from November 2009. The analysis includes the specifications of 2.5 cm strip lengths, hybrid configurations, DC-DC converter placements, and cooling block temperature gradients. Key results show maximum temperatures of -27.0°C for readout chips and -28.3°C for sensors in modules, with detailed findings on the cooling loop performance in rods and varying heat fluxes. The study is critical for enhancing design efficiency and thermal performance.

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Thermal Analysis of Outer Tracker Modules and Rod Design Parameters

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  1. Thermal Analysis of Outer Tracker Modules and Rod Susanne Kyre UCSB 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 Susanne Kyre UCSB

  3. Dimensions and Materials Susanne Kyre UCSB

  4. Module FEA Susanne Kyre UCSB

  5. Result of steady state thermal analysis Maximum Temperature: -27.0°C (at center readout chips on hybrid #2) Susanne Kyre UCSB

  6. Result of steady state thermal analysis Maximum Sensor temperature: -28.3°C 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 Susanne Kyre UCSB

  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 Susanne Kyre UCSB

  9. Rod FEA Susanne Kyre UCSB

  10. 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

  11. 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

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