US Silicon Tracker group

1
Quality Assurance Test Stand University of
Rochester

• QTC at Rochester, NY
• Whats new compared to KSU
• Vacuum Base Chuck Positioner
• Extra switch to decouple guard box
• Test crosscheck
• 5 Test Structures
• Tested by Vienna, Karlsruhe QTC
• 2 OB2 sensors
• Tested by Perugia QTC
• Handling the results
• Data Base
• Conclusion, plans

2
Setup is completed

• Hardware is in place and operational.
• Software is working as well, - test results are
  consistent with other testing centers (more
  details later).
• Clean room is to be completed by 20th of October.

3
Personnel

• Regina Demina [phone]
• Thomas Ferbel [phone]
• Elizabeth A. Groves [phone]
• Sergey Korjenevski [phone]
• David R. Martell [phone]
• Daniel Schwaab [phone]

4
List of the Equipment

• Probe Station Alessi REL-6142 8 in. guarded
  chuck, Semi-Auto
• Microscope Mitutoyo 2x 10x 20x, 10x
• Vacuum base positioners with 4 coax probes
• Needles diameter 5 ?m
• LCR HP 4284A
• V-source/Ammeter Keithley 237 and Keithley 487
• Switching Matrix Agilent 34970A with two 8x4
  switch 34904A
• Vibration-free table Kinetics 1201
• Custom made dark box

5
New Features

• Solid stable location of the chuck positioner.
• Significant to ensure safety and helps to
  minimize noise

6
New Features

• New switch is added to discharge decoupling
  capacitors.
• Significant to ensure safety and helps to
  minimize noise.

7
Cross Check, - Full strip tests

• Two OB2 sensors, ST, tested by Perugia
• 30210420275924
• 30210414739923
• 5 Test Structures, HPK
• 60548-050 from Karlsruhe
• 60548-051 from Karlsruhe
• 60549-055 from Vienna
• 60550-065 from Vienna
• 60551-087 from Vienna

All these were retested at UofR. Results are in
very good agreement.
8
IV Test
9
IV Test
10
CV Test
11
CV Test
12
Strip tests - Leakage
13
Strip tests - Leakage
14
Strip tests - Rpoly
15
Strip tests - Rpoly
16
Strip tests - Cac at 100Hz
17
Strip tests - Cac at 100Hz
18
Strip tests - Idiel
19
Strip tests - Idiel
20
Data Base

• We were not able to simulate data handling with
  fictitious names though we believe our .xml
  format is correct. The problem may disappear as
  we proceed with real actions.
• Error 
• DB ERROR fatal error 0RA-02291 integrity
  constraint (CMSTRKDB.REF_INPUT14) violated
  parent key not found
• ORA-06512 at CMSTRKDB.STORED_FUNCTIONS, line
  788
• ORA-06512 at line 1
• error goes on to list the text in the file. It
  is not just IV_TEST in particular. If this test
  is deleted and it goes straight to CV, the
  problem basically is repeated.

21
Conclusions and Plans

• QTC at University of Rochester complies with CMS
  requirements to test Si detectors.
• Rate of the testing is estimated to be 2 OB2
  sensors per day.
• Data Base remains an issue. The problem may
  disappear if everything is done in proper order
  using appropriate bar codes and all.