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AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter tracker , Tridi, 3 Thermidor 216 (21 july 2008) de-integration off-line operations lessons and preparation for integration Franck Cadoux Eric Perrin* Divic Rapin Florian Masciocchi Philippe Bouvier Javier Mesa Maarten Weber Manfred Willenbrock* With the help of S.Lucidi (Perugia) for paper work (QA) * Retirement approaching Université de Genève University of Geneva staff involved:
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AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

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Page 1: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

AMS tracker hardware status(mechanics and cabling)

Divic RAPIN, UniGe AMS splinter tracker , Tridi, 3 Thermidor 216 (21 july 2008)

• de-integration• off-line operations• lessons and preparation for integration

Franck CadouxEric Perrin*Divic Rapin

Florian MasciocchiPhilippe BouvierJavier MesaMaarten Weber

Manfred Willenbrock*

With the help of S.Lucidi (Perugia) for paper work (QA)

* Retirement approaching

Université de Genève

University of Geneva staff involved:

Page 2: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Tracker de-integration• Was the opportunity for verifications and to study non-

conformance issues.• In particular, the interferences with the LTOF already

described by Corrado Gargiulo at April 2008 TIM

Page 3: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Tracker de-integration• Was the opportunity to study non-conformance issues

Incompatibilities between locations of LTOF patch panel and pigtails of the tracker lower cooling pipes.

Page 4: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Confabulations took place under the detector …

… black mass ?

Page 5: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

… finally a council of wise men took the decision …

Page 6: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

… to modify the lower cooling loops by replacing the last pigtails by a simple S.

Page 7: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Other verifications and tests

• mountability of special supporting brackets for connectors of cooling pipes.

• accessibility of tracker feet for shear pins position transfer

• covers for light tightness of tracker feet

Page 8: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Dismantling

• On-line operations went smoothly and were faster than expected thanks to the rotation of the detector and:– Measurements of feet movement for cold integration

were canceled since the inner tracker integration with cold tank is no longer an option.

– Outer planes and inner cooling loops were dismantled from bottom (this condition will no longer be possible for final integration)

– Extraction of the inner tracker made in vertical position.

• Components of the tracker are presently in the AMS clean room for off-line operations

Page 9: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Outer plane removal

Jig used to support part of an outer loop during outer plane transport

Page 10: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Inner tracker extraction

Installing light scaffolding

delicate operation on tracker feet

Page 11: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Inner tracker extraction

No damage on thermal screen

Lift-off

Page 12: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Dismantled tracker in clean room

Page 13: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Ladder status (test with mobile station)

• Ladders I heard about are:

– L15AN117 (read-out:404 oct:5 pwg:1 TDR:2A) Layer:8, slot:8P (++-)

nothing found � OK

– L15AP098 (read-out:600 oct:8 pwg:1 TDR:1B) Layer:8, slot:7M (---)

� bad K cable � recoverable

– L12AJ019 (read-out:309 oct:3 pwg:1 TDR:3B) Layer:4, slot:6P (+-+) � K cable disconnected � recoverable with front shell opening

– L09GI002 (read-out:319 oct:3 pwg:3 TDR:12B) Layer:3, slot:3P (+-+) nothing found � OK

• Other problematic ladders ? No ? Good !

• Problems with connector quality and connector fixation

• A set of K and S connector PCBs will help

Page 14: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

K flight cable connector of L15AP098DR. july 18, 2008

Pin 2 Guard ring

Line 5 (H1)

6 ohm 1.5 ohm

1.5 ohm

Pin 7 (H1)

• Test of K flight cable showed interruption on pin 7 of connector of TDR side.

• Surgery to access connections on patch panel for better diagnostic.

• Contact was re-established (by chance). Poor contact through the Airborne connector.

• Airborne connector faulty ?? Or cold soldering ???

• This problem occurred already with another cable.

Page 15: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Connector L12ah030 (-2V on pins 4,12 )

Surgery to modify a connector was already made to solve the problem of an hybrid.

• A set of K and S connector PCBs may help

Page 16: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Ladder L12AJ019 Layer:4 Col:6P (+X –Y +Z) octant:3 pwgrp:1 TDR:3B Read-out: 309 ?

Pictures taken may 8, 2007. After tests. Just before closing last shell

DSCN0356.JPG

DSCN0353.JPGConnection hidden during most of the time by supporting bars.Tests were OK

Page 17: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Fixation of connectors with scotch

OKOK

OK∩

∩U

U

U

Page 18: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Main off-line operations(in clean room and in air lock)

Repairs and evtl modifications will be recorded in the tracker ADPs (Stefano Lucidi)

• Evaporators (cooling loops) (air lock, B.Verlaat, 2nd half of August)- Change pipes connectors (cut and weld)- Modify pigtails of lower loops (cut and weld)- High pressure and leak tests- Cleaning

- Inner Tracker (clean room)

- Verification of cables and connectors fixations- Install upper inner cooling loop (after modification)

- Install evaporators supporting brackets on conical flange

Page 19: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Main off-line operations(continuation)

- Outer planes (clean room)

- (Test of a ladder and/or cable on plane 5)- Helicoil check/repair- Install outer cooling loops (after modification)

- Final fixation of loops to flat St steel plates- Final fixations (Chotherm and cable connector pins)

- TAS work ?- Components (UniGe)

- Inserts to fix Alu plates to folded brackets- Fabricate missing cable brackets for Vacuum Tank- Surface treatment of Alu components- Fabricate final shear pins for tracker feet- Fabricate M10 spl nuts- drill plates to secure M10 nuts- etc…

Page 20: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter
Page 21: AMS tracker hardware status - UNIGEdpnc.unige.ch/users/rapin/RapinSplinter_07-08.pdf · 2008-07-18 · AMS tracker hardware status (mechanics and cabling) Divic RAPIN, UniGe AMS splinter

Preparation of final integration

• Update of integration procedures (ATS, Stefano Lucidi) taking into account what we have learned in pre-integration and the limitations imposed by the real vacuum case:

- Limitation of RAS rotation

- Field mapping / Need for special protection ?

- Cryogenic services to VC

Lessons from pre-integration

• Mechanical integration of the tracker was successful

• One will have to take care of many small details by-passed for pre-integration

• Cabling appeared to be longer and more difficult than expected