chiho wang atlas trt duke university cern, feb. 2005 1 trt barrel assembly status & schedule...
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Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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TRT Barrel assembly
status & scheduleFeb. 9, 2005
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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All modules installed!
Feb. 3, 2005
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Snap shot
Feb. 8 snap shot Type 1:
All modules installed & tested
All electronics installed 20 modules cooling tube
installed Type 2:
All modules installed & tested
18 side A electronics installed
Type 3: All modules installed 28 modules with protection
boards and tested Feb. 06, 2005
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Module installation time line
0
1
2
3
4
5
6
7
8
06/12/04 08/01/04 09/20/04 11/09/04 12/29/04 02/17/05Date
mo
du
les
inst
alle
d /
day
type 1
type 2
type 3
Feb. 3
Sep. 19
Nov. 19
Aug. 11Jun. 25
Aug. 02
Sep. 08
30 module mounting days
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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0
2
4
6
8
10
12
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Position
# d
ead
wir
e
Module placement
0
2
4
6
8
10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Position
# d
ead
wir
es
Final dead wire distribution:
Type 1123.5 = 1.17%
Type 2121=0.73%
Type 3572.5=2.26%
0
10
20
30
40
50
60
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Position
# d
ead
wir
es
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Final dead wire distribution
Whole barrel: 817 = 1.55%
0
10
20
30
40
50
60
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Position
# o
f d
ea
d w
ire
s
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Mechanical Assembly Processes
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Module preparation (done, except for spares)
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, Feb. 2005
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Module installation & tests (4 last modules)
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 HV 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 with Ar-CO2 Check active gas path for
obstruction (flow rate test)
Type 1 Leak rate
0
0.10.2
0.30.4
0.50.6
0.7
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Module Position
mB
/B/m
in
Type 2 leak rate
0
0.05
0.1
0.15
0.2
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Positionm
B/B
/min
Type 3 leak rate
0
0.1
0.2
0.3
0.4
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Position
mB
/B/m
in
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Cooling lines installation (on going)
After the electronics have been:
Installed Continuity check Noise check
The cooling lines are: inserted through both
corners of the module 90 bend forced on one end Attachment to cooling plate
at each end. (T1 – 20 modules)
Cooling flow measurement is made.
(T1- 20 modules)
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Module repairs & modifications
Components modification Peek tubes for module
cooling reduced from 0.123”-0.127” 0.116”-0.120” (done)
Fuse box brackets dimension change
Fuse box screws changed from Nylon to Ultem
CO2 flushing tube redesigned with corrigated PEEK.
De-magnetized stainless steel screws for active gas inlet plugs (started from type 2 modules)
Module repair: Wire removal (2 bad wires +
some retroactive decisions from acceptance group)
HV trace broken, shares from neighboring line (1)
Cooling sleeve replacement (4)
Three wires removed from BSS. (2 drawing excess current, 1 shorted).
Two modules (T1) show a connection between 2 signal wires (double joints) at one end. Left for now.
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Remaining mechanical work
Finish testing the last 4 type 3 modules (~1week) Continue to install module cooling tubes as electronics are installed Install outer cylinder
After all modules are tested (~ March, ~1week) Before manifold can be installed
Install services after electronics are installed Cooling manifold (contract, deliver ~ April) Active gas manifold (drawing/review ~ this week) Purging gas manifold (parts)
Install fuse boxes Need to solve fuse problem and resume production 3 possible windows for installation (in descending preferences)
Before TRT/SCT system test ~ Oct. Before going in the pit ~ Feb. 06 In the pit, same time as harness or before (?)
MTF migration: Data base structure defined, entering data.
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Electronics installation
Type 1: Completed Jan. 24, 2005
Type 2: Side A (2B): 18 modules
installed 22 boards in repair
process, ~ 10 finished Side C (2F): started stuffing at
ACAMAS. Should have pre-series at CERN ~end of Feb.
Type 3: Side A (3B): Pre-series at
CERN and tested. Feedback to ACAMAS. No known issue.
Side C (3F): All bare board received. Need to start pre-series.
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Electronics schedule
3B will be the next to arrive (followed by 2F and 3F) and available for installation ~April
11. After that we will be saturated with boards. Installation is the slowest part.
3 weeks per side for type 2 1 month per side for type 3
Will need to run more than one shift to finish installation in June.
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Services Manifolds
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Sector Tests
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Current Integration Schedule
Chiho Wang ATLAS TRTDuke University CERN, Feb. 2005
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Summary
All modules installed! Electronics installation is well under way.
All type 1 installed >1/4 type 2 installed.
Parts, procedures, and drawings are in good shape Manifolds could cause delays and need to be
carefully followed. Active Roof Boards remain the critical path and
need to be carefully followed Fuse problem need to be solved