Top Banner
LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule
18

LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Mar 28, 2015

Download

Documents

Adam Kennedy
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

LHCb VELO ProductionVisit November 9th 2005

Introduction to staffStatusSchedule

Page 2: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Production Phase Staff

Page 3: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Status

• EDR in April’ 05• Target Production Readiness Dec ’05

– Green light for the release of physics grade components by the collaboration

• Delivery of 42 modules (84 sensors)– 20 for system test April ’05– 42 by June ’05 (or earlier)– Rates of delivery to be discussed later

Page 4: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Status

• Preparing for production of (PRR)– 3 mechanicals (fully functional barring

sensors)– 3 electrical (fully functional but with

poorest sensors)

Page 5: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Major issues at EDR

• Pitch adaptors• Twisted hybrids at pre-production

phase– These two problems alone have cost ~ 6

months

• Jigs and tooling– Majority complete/modified

• Vacuum Performance of Sensors– OK

Page 6: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Major post EDR issues

• High current mode of sensor during testing• Reliability of K&S 8090

– Front end bonding machine– New contract gives us confidence

• Pitch Adaptors• Hybrid circuit testing

– Commericial and in house• Stress relief of cables

– Clamp production proving difficult• Cable quality not good enough for

production– Tied to one company at the moment

Page 7: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

In preparation for PRR

• Assembly robot deployment• Paddle-hybrid gluing jig completion• Programming of glue robot

Page 8: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

PRR will require

• Non-artisinale production of modules• Adherance to tight mechanical

tolerances• Electrical integrity• Proof that yield is adequate

Page 9: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Visit Schedule 9th November• 9:30 -11:00 Tour of assembly area

– Parts and metrology: Phil Turner– Gluing and bonding: Mark Whitley– Assembly and testing: John Carroll

• 11:00-11:30 Tea (3rd floor)• 11:30-12:30 Tour of workshop

– Carbon Fibre and Mechanics: Peter Cooke• 12:30-13:30 Lunch (3rd floor) all invited• 13:30-14:00 QA and software (VC rm)• 14:00-15:00 Project Review• 15:00-15:30 Resource Meeting• 15:30-16:00 Tea/Coffee• 16:00-16:15 Feedback (rm 337)

Page 10: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Project Review

9 November

Page 11: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Project Review

Page 12: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Project Plan

• PRR plan Shortcut to PRR.lnk

Page 13: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Logistics• Components

– Feet– Bases– Paddles– TPG(100%)– CF(100%

• Substrates– 75% yield

• Hybrids– Yield unknown– Should have 50-60 physics

grade• Sensors

– 95% yield -> replacement• Pitch Adaptors

– 60% received– 80% yeild

• Handling Frames– 20 off– 6 available

• Cables– Major problem

• Clamps– Manufacturing problem

• Transport boxes– Syracuse

Page 14: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Sensor Status• Received 42/142 ~ 30%

– Contracted delivery at 15/month= 7 months to completion (June ’06)

– Sufficient for VELO completion in 4 months (March ’06)

– Laser cutting will now be the bottleneck

• Have 18 sensors for physics– 4 under test– 6 high current behaviour but possibly usable– 14 used/irradiated/rejected/damaged/(mia)

• Our QA deselects ~5% of delivery. These are replaced.

Page 15: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Sensor ProductionDATE: 31st OCTOBER 2005

DOUBLE-METAL LHC-b VELO DETECTOR TRACKINGOVERALL WAFER COUNT 200 um PHI 200 um R 300 um PHI 300 um R MECH R MECH PHI

PROCESS STAGE1 1200 DEG.C OXYGENATION 20 302 P-SPRAY3 FIELD OXIDATION 4 1ST/2ND DIFF IMAGING 5 CAPACITOR THIN OXIDE 20 306 FRONT/BACK ION IMPLANTATION7 ISOLATION IMAGING (NN+ OHMIC)8 ISOLATION IMPLANT (NN+ OHMIC)9 POLYSILICON DEPOSITION (NN+)

10 POLYSILICON IMPLANTATION 11 SILOX DEPOSITION (RES)12 CON-P IMAGING (RES) 13 CON-P IMPLANTATION 14 RESISTOR IMAGING (NN+ OHMIC) 15 IMPLANTATION ANNEAL (900) 16 PE-CVD DEPOSITION17 CON-S IMAGING18 WAFER CLEAN/P-ETCH19 1 ST METAL DEPOSITION (P+N) 29 47 20 1 ST METAL IMAGING/ETCHING21 2 ND METAL DEPOSITION (NN+)22 2 ND METAL IMAGING/ETCHING23 NN+ D/M DIELECTRIC (4 UM)24 NN+ VIAL HOLE IMAGING/ETCH 25 N-MET2 (D/M OVERLAY)26 N-MET2 METAL IMAGE/ETCH27 D/M SCAN TESTING28 SILOX PASSIVATION29 LASER CUTTING (WAFERS) 1 530 WAFER CLEANING (FINAL) 31 FINAL TESTING (CHIPS) 5 3

FINISHED MECHANICAL CHIPS MSL LASER CUTTOTAL WAFERS IN SYSTEM 70 112

32 DELIVERED DEVICES

PHI WAFER = 3 OFF DEVICES CONTRACT NUMBER = JW1477R WAFER = 2 OFF DEVICES

Page 16: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Risks

• Sensor manufacturer deliver

• Cables• Clamps• Hybrids• Assembly/twist

methodology failure

Page 17: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Realism

• Do we think the plan is “realistic”• Yes

– Depends on delivery not slipping and no unforeseen disasters

Page 18: LHCb VELO Production Visit November 9 th 2005 Introduction to staff Status Schedule.

Summary

• All components and methodologies have been designed

• Delivery of sensors still of concern