1. Module production in Italy
R.Dell’Orso on behalf of TIB
Tracker General Meeting – February 13, 2004
February 2004
CMS Tracker Week

2. Summary Procurement of components Assembly and bonding
Module test status
Test procedures
Fast Test (ARC system)
Long Term Test (Vienna Box)
Modules rejected
Analysis of data
Conclusions
February 2004
CMS Tracker Week

3. Production flux and responsabilities
frames
sensors
hybrids
pitch adapter
hybrid carrier
6000 TOB
2000 TIB
6000 TOB
2000 TIB
CERN
Sensor Quality Test Centers
Pisa
Perugia
TIB
Assembly Centers (GANTRY)
Bari/Ct
Perugia
TIB
Bonding Centers
Firenze
Torino
Pisa
Padova
Catania
Bari
Module Test Centers
Firenze
Torino
Pisa
Padova
Catania
Bari
Pisa
Integration Center TIB/TID
February 2004
CMS Tracker Week

4. Procurement: sensors Delivered: 4100 End of delivery: may 2004
Full test by HPK
CMS test on sample
February 2004
CMS Tracker Week

5. Procurement: frames and hybrids
SS frames cut 1600/2100
SS kapton 100% produced
SS frames assembled 1200/2100
396 hybrids (4 chips) received by CERN
February 2004
CMS Tracker Week

6. Gantry centers (Bari, Perugia)
Modules assembled: 386
Production rate: 16 modules/day
<1% rejected for tilded angle (>10mdeg)
February 2004
CMS Tracker Week

7. Gantry centers Dx = 2 ± 6 mm Dy = 1 ± 7 mm February 2004
CMS Tracker Week

8. Bonding – Data Base Interface
February 2004
CMS Tracker Week

9. Module Bonding Form
February 2004
CMS Tracker Week

10. Pull Test Results Summary
Only Modules bonded
after 01Dec2003 make this plot
Hughes bonder
Mean SD
Module prod spec: mean > 5g
BA CT PI TO
# Modules pull tested
February 2004
CMS Tracker Week

11. Module Test Status
6 centers involved in production modules testing: Bari, Catania, Firenze, Padova, Pisa, Torino
All the centers are bonding and ARC testing
All centers have started LT tests
Bari was intended as backup center: (Multiplexer is arriving)
241 modules bonded and ARC tested
80 modules LongTerm tested
The overall quality of modules is good
February 2004
CMS Tracker Week

12. Module Test Status
Received
Bonded
ARC Tested
Good modules
LT Tested
Bari 41 33 21 19
Catania 25 13 6
Firenze 35 26
Padova 48 42 40 12
Pisa
117 94 91 30
Torino 36
Total
302
253
241
234 80
February 2004
CMS Tracker Week

13. Starting test procedure
shipping
ARC hybrid
Assembly
ARC hybrid
Bonding strips
IV 450V
Bondig HV
ARC hybrid
Fast Test ARC
Passive Cooling
ARC Test
Long Term
February 2004
CMS Tracker Week

14. Simplified test procedure
shipping
ARC hybrid
Assembly
ARC hybrid
Bonding
IV 450V
Bondig HV
ARC hybrid
Fast Test ARC
Passive Cooling
ARC Test
Long Term
February 2004
CMS Tracker Week

15. Simplified procedures
The original procedure was very redundant to trace back the origin of possible faults
Fast Test after assembly removed (after 200 modules)
New testing procedures are in place in pilot bonding centers: testing is now much faster
1 mode-only test upon arrival
HV bias and strip bonding in one go, IV only at the end
112 modules passed the passive cooling (-20°C)
We have chosen to stop the passive cooling cycle if no new problems arise
February 2004
CMS Tracker Week

16. ARC Test Results
On a total of 241 modules tested, we found 7 bad modules:
2 have been tagged for bad strips (>2%)
4 have a bad IV curve
1 has bonding problems on the pitch adapter
February 2004
CMS Tracker Week

17. Bad strips >2% (#33119)
A short of 9 channels: scratch on the silicon crystal shorting the strips
February 2004
CMS Tracker Week

18. Very High Current (#33006) No evidence of big scratches or damages
February 2004
CMS Tracker Week

19. Very High Current (#33070) Very good noise figure Vbias= 400V
February 2004
CMS Tracker Week

20. Unbondable strips on pitch adapter (#33015)
Hybrid
PitchAdapter
sensor
Zone
Difficult
to bond
APV
Not bondable Strips
Spot
February 2004
CMS Tracker Week

21. IV Curves
There are also modules that after bonding have a high current with respect to the other TIB modules, but below the 10 μA cut
All these modules result good in all other tests
They are considered GOOD
February 2004
CMS Tracker Week

22. IV Curves Scratches on sensor 1 noisy strip not flagged by sensor test
February 2004
CMS Tracker Week

23. Long Term test in Vienna box
All centers equipped to test 6 modules at a time
Interlock
System
We can safely keep the system working during night and weekends
February 2004
CMS Tracker Week

24. LT Test Settings We are using a common scenario inside TIB
Full set of
measurements
We are using a common scenario inside TIB
9 cooling cycles between 20°C & -20°C, over 72 hours
February 2004
CMS Tracker Week

25. CM Noise stability Peak InvOff Peak InvOn Dec InvOff Dec InvOn
February 2004
CMS Tracker Week

26. LT Results 80 modules tested with LT Version 1.22
The LT shows still some stability problems running a 72 hours scenario
We loose some modules after some cooling cycles (up to now 10 modules)
mainMonitor stops to acquire data from those modules, usually due to a high number of I2C errors
Usually those modules are recovered
We are investigating in collaboration with Wim on the causes of these problems
More diagnostic needed
Are we testing the modules or the Test Setup ?
February 2004
CMS Tracker Week

27. LT Results 1 module definitely broken during thermal cycles
We tested again this module with ARC at room temperature and there are problems with the I2C communication
Nothing strange is visible in an optical inspection
February 2004
CMS Tracker Week

28. Monitoring of Temperatures
All the centers reach almost the same temperatures on hybrid and silicon
The silicon temperature goes down to -15°C
The hybrid temperature reaches -10°C
Hard Reset
February 2004
CMS Tracker Week

29. Monitoring of Leakage Current
Mod
February 2004
CMS Tracker Week

30. Monitoring of LV Currents
With the new settings, we really switch the APVs off
This can be observed looking at the current of 1.25V line
Analog off
Warm
Cold
I 1.25 V
Time (s)
Measurements taken with PAACB
February 2004
CMS Tracker Week

31. Analysis A task force is working to optimize the cuts
33059 peak invoff
A good module
Chip edges
A task force is working to optimize the cuts
February 2004
CMS Tracker Week

32. Analysis: comparison between ARC and LT
33035: a module with some problems…
463 noisy both ARC and LT (high current, fails Istrip)
475 open both ARC and LT (pinhole, fails Idiel)
503 noisy both ARC and LT
ARC
463
503
475
LT (-20°C)
463
503
475
February 2004
CMS Tracker Week

33. Strip shorts 33005 Peak invoff 33143 Good at sensor test Module 33005
303, 304 short (fails Cac)
403 open (pinhole, fails Idiel)
ARC
LT (-20°C)
33005
Peak invoff
303,304
303,304
February 2004
CMS Tracker Week

34. Data Base: XML file
There are still differences between LT and ARC version (chflag)
Some fields are not filled (Environment variables, CMN) or are wrongly filled (average noise)
Up to now it’s impossible to produce an output usable for the database:
We keep all root files (and backup also!)
Every center has a Summary Web Page
February 2004
CMS Tracker Week

35. Results Web Pages
February 2004
CMS Tracker Week

36. Conclusions 253 TIB modules produced from december
7 modules rejected
80 modules tested with Long Term test
1 module rejected
10 modules excluded by acquisition during the 3days scenario: more diagnostic needed
Production rate:
Assembly Bonding and ARC test: startup rate is satisfactory, it has to increase (16/day), provided enough hybrids are available
Long Term test: max rate 60/week (3days scenario)
72/week including Bari
It is foreseen to increase from 6 to 10 modules/box
February 2004
CMS Tracker Week