MFT Progress Report

Ginés Martínez García for the MFT project

ALICE mini-week, Sep 1st-5th 2014

Outlook

TDR Status (sensor parameters, TDR configuration)

Read-out CoolingServices Automatic Assembly SystemOrganization, Institutes

CERN svn alicemft / TDR / trunk

MFT TDR (75-82 pages)1. Introduction (4 pages)2. Pixel Sensor (2 pages)3. Ladder and Disk Structure (16-19 pages)4. Global support structures, thermal studies … (17-19

pages)5. Read-out electronics (7-8 pages)6. Performances (15-17 pages)7. Organization, cost and planning (10 pages)A. Detector Parameters (2 pages)• Bibliography (2-3 pages)

Detector Parameters

• ITS TDR CERN-LHCC-2013-024 (https://cds.cern.ch/record/1625842?ln=fr)

• ITS TDR addendum (UGC document)• We need to discuss with ITS which parts of the ITS

TDR need to be upgraded for the MFT TDR. New reference and justification will be needed. As an example: Inner layer max power consumption 300 mW/cm2 in the TDR. Shall we keep this conservative value? Other examples : dead areas, pads for parallel 320 MB/s RO.

MFT TDR configuration• 5 Detection Disks, 2 planes each (decided).• Ladder Overlap: proposal to be compatible with a

FPC 17 mm width (under discussion). • 5 types of FPC: 1, 2 ,3 ,4 and 5 sensors (decided).

First draft of the TDR configuration.Raphael & Franck WG3, Aug 28th 2014

MFT TDR configuration

First draft of the TDR configuration.Raphael & Franck WG3, Aug 28th 2014

Ongoing discussion

8

MFT read-out (I)LoI: Standard ALICE upgrade read-out: GBT + CRU

Maximum data flow 320 MB/s : several links per sensor, depending on its size.

GBT

Sensor Sensor Sensor

Sensor

Sensor Sensor Sensor

Sensor Sensor Sensor SensorGBT

GBT

Sensor Sensor Sensor Sensor

Sensor Sensor Sensor

Sensor Sensor Sensor

Sensor Sensor

Sensor

CRU

CRU

Optical

FPC, AlSensor Sensor

9

Defining TDR MFT Read-OutRead-out mapping MFT TDR

configuration being studied.GBT option imposes several e-

links per sensor (3 or 4).ITS foresees 1 e-link per sensor

via a 1 GB/s copper 4m length line.

Critical issue for the MFT project.This requires further discussions in

the next months.Hopefully we will find a common

ITS/MFT solution.

MFT TDR readout

• Baseline– Pixel sensor with 3 outputs, 320 MB/s each to be

compatible with GBT.– GBT + and optical transceivers in the MFT cone.– CRU read-out out of ALICE.

• Back-up– One 1 GB/s per pixel sensor (as ITS inner barrel)– Data concentration done in the MFT cone (~50 kRad

dose).– More manpower has to be identified to develop this

option.

MFT Flex Printed Circuit

• Designing a FPC compatible with 3 read-outputs per pixel sensor.

• FPC width 16.8 mm• Finalizing design using same FPC “frame” (positioning holes)

as ITS inner barrel.• Decision on the FPC length and connector integration to be

taken soon.

Preliminary MFT FPC designChristophe R.

TDR MFT Cooling • Baseline:– Air cooling as in the MFT LoI.– Pixel group reported last MFT/ITS

meeting lower power consumption than that of LoI.

– Re-do thermal studies for air cooling with the new configuration (ongoing).

– Water cooling of the PCB (namely for DC-DC converters).

• Backup:– Water cooling in the MFT accep.– Mechanical design of the disk spacer

with water cooling.

Services

• Discussion with ITS service group needed.• Interface of service between ITS and MFT

barrel.• Common DCS, ensuring good modularity

between ITS and MFT.

Automatic Assembly System

• Including MFT requirements in the document prepared by ITS.

• Most issues have been addressed (shorter FPC, 1-5 pixel sensors, connector, perhaps different pad for RO).

• Providing a working table for MFT HIC.Fabienne and Stéphane for the MFT.

Thanks to Antonello

Organisation

MFT Institutes

MFT sharing responsibilities Working on a new version of the PBS, WBS and

planning.Discussion on the laboratory responsibilities with their

direction.MFT project approved in India. They will contribute to

the ladder assembly at CERN and read-out units (CRU).Discussion with new laboratories ongoing :• Pusan Korea (pixel sensor serie test),• Nakhon Thailand (thinning and Dicing),• WUT Poland (read-out), • CCNU Chine (read-out),• IFIC Spain (assembly and read-out).

Conclusions TDR MFT configuration to be ready soon. Upgrade of parameters wrt ITS TDR could be needed. Decisions on two critical issues: read-out and cooling, have

been presented. Read-out is a critical issue: new outputs in the pixel sensor

OR new common RO for ITS & MFT. FPC with 3 RO output per pixel sensor is possible. MFT requirements being included in the TS of the AAS

document. Discussing WBS with the laboratories. Green-light for for

MFT in India. In contact with new groups. We have to converge quickly.

The finalization of the TDR middle October is our main objective.