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GEM Integrated PCB readout and cooling

GEM Integrated PCB readout and cooling . Andrey Marinov On behalf of GEMs for CMS collaboration. Talk Outline. GE1/1 Proto1 GE1/1 Proto2 GE CMS detector – Cooling and integrated readout PCB NS2 Technique Detector Powering plan Cooling Calculations Readout strips - PCB design

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GEM Integrated PCB readout and cooling

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  1. GEM Integrated PCB readout and cooling AndreyMarinov On behalf of GEMs for CMS collaboration CMS GEM Upgrade Workshop III

  2. Talk Outline • GE1/1 Proto1 • GE1/1 Proto2 • GE CMS detector – Cooling and integrated readout PCB • NS2 Technique • Detector Powering plan • Cooling Calculations • Readout strips - PCB design • On going activities CMS GEM Upgrade Workshop III

  3. GE1/1 Detector Layout CMS GEM Upgrade Workshop III

  4. GE1/1 Prototypes – Proto1Readout PCB with strips 0.8mm pitch 128 channels per VFAT connector 1.6mm pitch 256 strips for each eta partition PCB thickness = 3mm 1024 channels CMS GEM Upgrade Workshop III

  5. GE1/1 Proto2 – Readout Board 24VFAT FEBs 3072 channels Strip’s pitch 0.8mm Strip’s pitch 0.4mm CMS GEM Upgrade Workshop III

  6. From Thermo Stretching to NS2 Technology CMS GEM Upgrade Workshop III

  7. GE CMS Prototype • Full size detector ready for installation in CMS • 3840 Readout channels. • Based on NS2 Technology. • Gaps between the detector electrodes 3/1/2/1mm • All services integrated and compatible with the CMS infrastructure. • Thanks to NS2 method the detector can be open and elements can be changed. CMS GEM Upgrade Workshop III

  8. GE CMS Prototype - Power Consumption • VFAT FEB power =18W • HV Divider = 4W • dc/dc converters - 80% efficiency • GBT = 2.25W • Total Power for the detector is 34W CMS GEM Upgrade Workshop III

  9. GE Detector Cooling Sketch CMS GEM Upgrade Workshop III

  10. Clearance Available Inside the GE detector 9mm clearance CMS GEM Upgrade Workshop III

  11. VFAT Cooling Sketch CMS GEM Upgrade Workshop III

  12. VFAT3 PCB Design 44mm 50 mm Multilayer chip bonding CMS GEM Upgrade Workshop III

  13. VFAT Cooling Sketch Water flow rate = 0.02826 kg/s CMS GEM Upgrade Workshop III

  14. VFAT Chip Cooling Calculations made by Enrich Da Riva – CERN CFD team CMS GEM Upgrade Workshop III

  15. Cooling Calculations for the HV Divider Calculations made by EnricoDa Riva – CERN CFD team CMS GEM Upgrade Workshop III

  16. GE Detector – Cooling of the HV divider CMS GEM Upgrade Workshop III

  17. VFAT3 Cooling Calculations made by EnricoDa Riva – CERN CFD team CMS GEM Upgrade Workshop III

  18. GE Integrated Readout Board • For the moment the full size readout board is foreseen to be 7 layers providing : • Strips and connection to the FEB • Power to the FEBs • Ground connection • LVDS signal lines from FEB to the optical transceiver GBT CMS GEM Upgrade Workshop III

  19. On going activities • VFAT PCB design – nearly finished • GE readout board on going CMS GEM Upgrade Workshop III

  20. Thank you. CMS GEM Upgrade Workshop III

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