CMS GEM Upgrade Workshop III1

GEM Integrated PCB readout and cooling

Andrey MarinovOn behalf of GEMs for CMS collaboration

18/04/2012

CMS GEM Upgrade Workshop III2

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

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CMS GEM Upgrade Workshop III3

GE1/1 Detector Layout

GE1/1 Proto1

GE1/1 Proto2

Drift, GEM1 = 3mm

Drift, GEM1 = 3mm

GEM1, GEM2 = 2mm

GEM1, GEM2 = 1mm

GEM2, GEM3 = 2mm

GEM2, GEM3 = 2mm

GEM3, Readout = 2mm

GEM3, Readout = 1mm

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4

GE1/1 Prototypes – Proto1Readout PCB with strips

18/04/2012CMS GEM Upgrade Workshop III

0.8mm pitch1.6mm pitch256 strips for each eta partition

128 channels per VFAT connector

PCB thickness = 3mm1024 channels

CMS GEM Upgrade Workshop III5

GE1/1 Proto2 – Readout Board

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Strip’s pitch 0.8mm Strip’s pitch 0.4mm24VFAT FEBs3072 channels

CMS GEM Upgrade Workshop III6

From Thermo Stretching to NS2 Technology

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CMS GEM Upgrade Workshop III7

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.

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CMS GEM Upgrade Workshop III8

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

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CMS GEM Upgrade Workshop III9

GE Detector Cooling Sketch

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CMS GEM Upgrade Workshop III10

Clearance Available Inside the GE detector

9mm clearance

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CMS GEM Upgrade Workshop III11

VFAT Cooling Sketch

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CMS GEM Upgrade Workshop III12

VFAT3 PCB Design

50mm

44mm

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Multilayer chip bonding

CMS GEM Upgrade Workshop III13

VFAT Cooling Sketch

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Water flow rate = 0.02826 kg/s

CMS GEM Upgrade Workshop III14

VFAT Chip Cooling

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Calculations made by Enrich Da Riva – CERN CFD team

CMS GEM Upgrade Workshop III15

Cooling Calculations for the HV Divider

Calculations made by Enrico Da Riva – CERN CFD team 18/04/2012

CMS GEM Upgrade Workshop III16

GE Detector – Cooling of the HV divider

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CMS GEM Upgrade Workshop III17

VFAT3 Cooling

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Calculations made by Enrico Da Riva – CERN CFD team

CMS GEM Upgrade Workshop III18

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

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CMS GEM Upgrade Workshop III19

On going activities VFAT PCB design – nearly finished GE readout board on going

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CMS GEM Upgrade Workshop III20

Thank you.

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