Chiho Wang ATLAS TRT Duke University CERN, Sep Barrel integration status

Chiho Wang ATLAS TRT Duke University CERN, Sep Recent Time line  Jun 28 – 1 st module installed  July 21 – all but 2 type 1 modules installed u 1 cooling sleeve problem u 1 HV problem (M1.35)  Aug. 2 – type 1 complete u Fixed cooling sleeve u Gave up M1.35, use M1.26  Aug. 6 – 1 st type 1 electronics installed, complete with readout & LV/cooling interlock.  Aug. 11 – 1 st type 2 installed  Aug. 31 M1.26 removed, to be replaced with M1.35  Sep. 2 snap shot: u Type 1 - Waiting for M1.35 u Type modules installed, 7 more in SR being prepared. u Type modules in SR being prepared.

Chiho Wang ATLAS TRT Duke University CERN, Sep Module placement in BSS u Evenly distribute dead channels … u Observe constrains or preferences on HV feeding side due to anomaly in HV kapton.

Chiho Wang ATLAS TRT Duke University CERN, Sep Module preparation  Capacitor installation (~1-2 days/module) u Insert capacitors u Check capacitor connectivity u Check HV traces u HV test: caps + wires u Seal capacitors  Pre-insertion prep. (6 modules/day/2 person) u Check ground wire u Check cooling sleeve u Check mounting holes u Active gas fittings, custom made for each module: connection & leak test u Glue purging gas gasket u Tape HV kapton for protection u Glue thermal sensors as needed (4 modules each type)

Chiho Wang ATLAS TRT Duke University CERN, Sep Module installation  Procedures & tests u Fold HV kapton and cover with protection plates u Insert module & fix one corner u Set module z position to middle of BSS u Fix module 2 nd corner & attach set screws u Check purging gas flow Type L/min < 10% loss Type L/min < 15% loss Type L/min < 20% loss u Unfold HV kapton & check traces u Attach & glue active gas fittings u Plug & seal unused active gas inlets. u Leak test active gas volume (1mB/B/min) u Install protection boards u HV test u Check active gas path for obstruction (flow rate test)

Chiho Wang ATLAS TRT Duke University CERN, Sep Non-routine module work  Components modification u Peek tubes for module cooling reduced from 0.123”-0.127”  0.116” ” (done) u De-magnetization of active gas inlet plugs (started on type 2 modules) u Fuse box brackets dimension change u Fuse box screws changing from Nylon to Ultem  Module repair: u Wire removal (2 bad wires + some retroactive decisions from acceptance group) u HV trace repair (1) u Cooling sleeve replacement (3) u Re-glue detached shell & divider (1) u Tension plate socket replacement (2)

Chiho Wang ATLAS TRT Duke University CERN, Sep 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 TRT Duke University CERN, Sep Electronics installation  Protection boards - 21 type 1 modules installed more boards coming.  FE assembly – P1.29 installed. 17+ more being prepared  DCS : HV, LV, thermal sensors, cooling interlock (CIL) … operational.

Chiho Wang ATLAS TRT Duke University CERN, Sep 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.