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Barrel integration status. Jun 28 – 1 st module installed July 21 – all but 2 type 1 modules installed 1 cooling sleeve problem 1 HV problem (M1.35) Aug. 2 – type 1 complete Fixed cooling sleeve Gave up M1.35, use M1.26 - PowerPoint PPT Presentation
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Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
1
Barrel integration status
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
2
Recent Time line
Jun 28 – 1st module installed July 21 – all but 2 type 1
modules installed 1 cooling sleeve problem 1 HV problem (M1.35)
Aug. 2 – type 1 complete Fixed cooling sleeve Gave up M1.35, use M1.26
Aug. 6 – 1st type 1 electronics installed, complete with readout & LV/cooling interlock.
Aug. 11 – 1st type 2 installed Aug. 31 M1.26 removed, to be
replaced with M1.35
Sep. 2 snap shot: Type 1 - Waiting for M1.35 Type 2 - 21 modules installed, 7
more in SR being prepared. Type 3 - 4 modules in SR being
prepared.
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
3
Module placement in BSS
Evenly distribute dead channels … Observe constrains or preferences on HV feeding side due to anomaly
in HV kapton.
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
4
Module preparation
Capacitor installation (~1-2 days/module)
Insert capacitors Check capacitor
connectivity Check HV traces HV test: caps + wires Seal capacitors
Pre-insertion prep. (6 modules/day/2 person)
Check ground wire Check cooling sleeve Check mounting holes Active gas fittings,
custom made for each module: connection & leak test
Glue purging gas gasket Tape HV kapton for
protection Glue thermal sensors as
needed (4 modules each type)
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
5
Module installation
Procedures & tests Fold HV kapton and cover with
protection plates Insert module & fix one corner Set module z position to middle of
BSS Fix module 2nd corner & attach set
screws Check purging gas flow
Type 1 1.5 L/min < 10% loss Type 1+2 1.5 L/min < 15% loss Type 1+2+3 0.5 L/min < 20% loss
Unfold HV kapton & check traces Attach & glue active gas fittings Plug & seal unused active gas
inlets. Leak test active gas volume
(1mB/B/min) Install protection boards HV test Check active gas path for
obstruction (flow rate test)
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
6
Non-routine module work
Components modification Peek tubes for module
cooling reduced from 0.123”-0.127” 0.116”-0.120” (done)
De-magnetization of active gas inlet plugs (started on type 2 modules)
Fuse box brackets dimension change
Fuse box screws changing from Nylon to Ultem
Module repair: Wire removal (2 bad wires +
some retroactive decisions from acceptance group)
HV trace repair (1) Cooling sleeve replacement
(3) Re-glue detached shell &
divider (1) Tension plate socket
replacement (2)
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
7
Beyond modules
Data Base: Access data base in use for progress tracking.
MTF: Migration in progress. Preliminary tree structure available for review.
Upgrade for space frame bracing (needed for type 3 installation): In progress, some components ready to be installed.
Outer cylinder is yet to be copper shielded. Gas/Cooling manifold: Expect to have drawings
reviewed and submitted for fabrication this month.
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
8
Electronics installation
Protection boards - 21 type 1 modules installed. 6000 more boards coming.
FE assembly – P1.29 installed. 17+ more being prepared
DCS : HV, LV, thermal sensors, cooling interlock (CIL) … operational.
Chiho Wang ATLAS TRTDuke University CERN, Sep. 2004
9
Summary
More than half of the modules have been installed! Procedures are understood and becoming routine. Module installation expect to finish by the end of
the year Electronics installation has begun.