july 28 2004glast project installation review latlat 1 tracker tower installation review peter...

July 28 2004 GLAST Project

Installation ReviewLAT

1

Tracker Tower

Installation Review

Peter Amnuaypayoat [email protected] x8985



2

AgendaAgenda

• Tracker- Mock-up Eng. Dev. (R. Ruland)

Lessons Learned (Peter A.)• I&T Flow for Tracker Installation (T. Borden)• Grid Interface Hardware List• Notation

Coordinate System

Side Wall Identification

Flexure Identification• Installation Procedure – INFN

Static Test (Non-Aligning)• Presetting Procedure

Alignment of inner cone relative to outer cone• Installation Procedure – INFN

Vibration Test (Aligning to CMM measurement)• Dithering Procedure• Shimming Procedure• Cone Removal Procedure

• Alignment Tools• Optical Survey Tools• Near-Term Plans

Final CMM of Mock-up at SLAC (8/5-6 tbd)

I&T Training

Grid I/F Hardware for I&T• Future Topics (Next Meeting)

Flex Circuit Cable Installation

Cable Bending

Cable Bonding

Connector Saver Plan



3

Tracker Mock-up Engineering DevelopmentTracker Mock-up Engineering Development

• CMM Program established from Tower Mock-up model

Developed in Bay area and at INFN

• Experience gained from Mock-up

Tower to Grid simulator installation

Alignment of Eccentric cones

Testing of the CMM program

• Differences between Mock-up model and E.M. (Flight like) model

Corner Flexures are non flight like (older rev.)

Does not contain corner brackets or flight like reflector ball nests



4

Tower Alignment SummaryTower Alignment Summary

• Measurements at INFN

– Used their CMM which runs PC-DMIS

– Created measurement scripts for automated measurements

– Derived CS which puts tower in optimized position, i.e. Z-axis vertical wrt gravity, X, Y symmetrical to actual shape

– Determined coordinates of flexure conicals in tower CS

– Comparing actuals vs design yields dial-in settings for cones

– Applied settings, mounted tower to base

– Cross-checks good to 500 µm (TBs too small and loose)

• Planned measurements at SLAC

– Verify procedure by independently creating equivalent measurement routine on our Leitz PMM using Quindos

– Repeat measurement / alignment cycle at least three times



5

I&T Flow For Tracker InstallationI&T Flow For Tracker Installation

ReceiveTKR

Tower

Inspect, Metrology & El Test

Final Test

Remove CAL, TEM, TEM-PS, & TKR Tower from

Single Bay

Install CAL, TEM, & TEM-PS

Install TKR into alignment

fixture

Measure TKR and

Align Cones

Test

Prepare

GridBay

Install TKR Tower into Grid Bay

Install TKR Tower into Single Bay

Install CAL, TEM, & TEM-PS



6

Grid Interface Hardware listGrid Interface Hardware list

• Installation Shims: LAT-DS-03506

• Outer Eccentric Cone: LAT-DS-02788

• Inner Eccentric Cone: LAT-DS-02787

• Hex Bushing: LAT-DS-02789

• Hex Nut: LAT-DS-03925

• Shoulder Stud: LAT-DS-02791

Corner Flexure

Grid



7

NotationNotation

+Y, +x

+Y, -x -X, +y

-Y, -x

-Y, +x+X,-y

+X, +y

-X,+Y

+X,+Y(reference location)

-X,-y

-X,-Y(reference location)

+X, -Y (reference location)

+X

+Z

+Y

Grid Simulator(Tower base plate)

+X, +y designates the stud on the + y side of the flexure which is on located on the +X side wall.

For all side flexures, the side flexure identifier is capitalized, while the side flexure conical(stud) is in lower case.



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Installation Procedure (Static test) - INFNInstallation Procedure (Static test) - INFN

• Refer to section 2.1 of LAT-DS-0425-01

• Installed Grid simulator with no Aligning– Performed on Tower Mock-up– requires no Aligning tools– Adjusting tools required

• Preset three inner and outer cones to the concentric position

For three reference locationsUsed to locate the position of TowerAlign slots on both cones

• Remaining cones are to be “Dithered”Process in which cones seat to their required position



9

Presetting ProcedurePresetting Procedure

Refer to section 6.1 of LAT-DS-04245

Section 6.1.9: determine α by using Matlab program “angtool”

Setting α, “inner to outer cone angle”



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Installation Procedure (Aligning to CMM measurement) - INFNInstallation Procedure (Aligning to CMM measurement) - INFN

• Refer to LAT-MD-03566 and LAT-PS-04245

Tower C.S +Z

Struc C.S +Z

Tower C.S +Z

Define a coordinate systembased on the location of

Top and Bottom Tray Hardware. Then move it so it is centered on the shape and size of the

Sidewalls

Calculate Flexure Point offsets from nominal

and check against available travel

Set Eccentric Cone rotation,

then mount Grid Simulator

and fit with shims.

Determine β for each reference locationLAT-PS-04245: Section 2.3



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Installation Adjusting ProceduresInstallation Adjusting Procedures

• Dithering

Process in which cones seat to their required position

Tool LAT-DS-04337

• Shimming Procedure

Refer to LAT-PS-04245 section 9• Measurement of gap• Selection of shim stack

• Cone removal procedure

Refer to LAT-PS-04245 section 8• Assembly of the cone Extractor• Removal of the Inner cone from the

Corner Flexure• Removal of the Outer cone from the

Corner Flexure• Separation of Inner cone from Outer cone



12

Alignment ToolsAlignment Tools

ItemDrawing Number Title

Recommended Quantity Needed

at each Installation sight

Quantity at INFN

Quantity at SLAC

Vendor Contact Number

Cost Total

Need Date

Delivery Date Comments Done

1

LAT-DS-04335

Outer Cone Adjuster, Spanner 3 (Sets) 2 (Sets) 0 SLAC TBD 30-Jul-04 30-Jul-04

Need to order sets for I&T need date

2

LAT-DS-04336

Inner Cone Adjuster, Spanner 3 2 0 SLAC TBD 30-Jul-04 30-Jul-04

Need to order sets for I&T need date

3

LAT-DS-04337Dithering

Tool 10? 3? 0 SLAC? TBD 30-Jul-04 30-Jul-04

Need to order for I&T need date, possible outside

vendor

4

LAT-DS-04344Alignment Template 2 1 2? SLAC TBD 13-Aug-04 TBD

Touches Cones, need Q.C.?? Possible material

change to steel?5

LAT-DS-04345Alignment

Block 2 1 0 SLAC TBD 13-Aug-04 TBDNeed to order one for I&T

need date6

LAT-DS-04346Alignment

Dial 2 1 1 SLAC TBD 13-Aug-04 TBD

Touches Flight Cones, need Q.C.?? Need to order

for I&T need date. 7

LAT-DS-04347Cones Aligner 2 2 0 SLAC TBD 13-Aug-04 TBD

Touches Flight Cones, need Q.C.?? Need to order

for I&T need date. 8

LAT-DS-04348Clamping Template 6 3 1 SLAC? TBD 13-Aug-04 TBD

Contact Flight Flexure, need Q.C.?? Need to order

for I&T need date.

9LAT-DS-04339

Extraction Rod 2 2 0 SLAC TBD 30-Jul-04 30-Jul-04

Need to order some for I&T need date

10

LAT-DS-04340

Extraction Tube, Inner

Cone 4 3 0 SLAC TBD 30-Jul-04 30-Jul-04

INFN will be able to use future extraction bracket,

due to access from behind. Need to order some for I&T

need date11

LAT-DS-04341

Extraction Tube, Outer

Cone 4 2 0 SLAC TBD 30-Jul-04 30-Jul-04

INFN will be able to use future extraction bracket,

due to access from behind. Need to order some for I&T

need date12

LAT-DS-04342Pull Rod

Base 2 2 0 SLAC TBD 30-Jul-04 30-Jul-04Need to order some for I&T

need date13

TBDExtraction Bracket 2 0 0 SLAC TBD TBD TBD

Needs to be Designed. For use at INFN (Arthur?)

CONE EXTRACTION TOOLS

INTERFACE AND ALIGNMENT TOOLS FOR TOWER "A"

CONE ADJUSTING TOOLS

CONE ALIGNMENT TOOLS



13

Additional TopicsAdditional Topics

• Optical Survey Tools

• Near-Term Plans

Final CMM of Mock-up at SLAC (8/5-6 tbd)

I&T Training

Grid I/F Hardware for I&T

• Future Topics (Next Meeting)

Flex Circuit Cable Installation

Cable Bending

Cable Bonding

Connector Saver Plan

july 28 2004glast project installation review latlat 1 tracker tower installation review peter...

Documents

tracker installation

y reference location

notation y

mockup tower

y symmetrical

tower cs

tower mockup model

mounted tower