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Run2b Silicon Electronics

Run2b Silicon Electronics. Spreadsheet Status Laser measurements L1 module measurements Pedestal distributions Correlation between chips. Gustavo Otero Y Garzon University of Illinois at Chicago December 9, 2002. Spreadsheet.

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Run2b Silicon Electronics

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  1. Run2b Silicon Electronics • Spreadsheet Status • Laser measurements • L1 module measurements • Pedestal distributions • Correlation between chips Gustavo Otero Y Garzon University of Illinois at Chicago December 9, 2002

  2. Spreadsheet • “SVX4_MS_1.9.xls” can be found in d0server4\users\gotero\spreadsheets\good_spreadsheets\ • Not entirely documented yet. The documentation of the previous version is in: d0server4\projects\run2b\silicon\www\smt2b\testing\testing\html Gustavo Otero y Garzon- UIC

  3. Spreadsheet’s New Features • Flag for “new” and “old” SASeqs • DMC_1300 control (laser table movement) • HV motherboards control • Pedestal distribution plots • Correlation plots • Export plots as GIF files • Master/Slave mode (simultaneous readout of up to 6 chains) Gustavo Otero y Garzon- UIC

  4. What’s Coming… • Automatic scan of strip’s response to laser signal • Depletion voltage measurements • Leakage current measurements • DMA (Done this week?) Gustavo Otero y Garzon- UIC

  5. L1 Laser Measurements • Used SASeq’s trigger mode, RTPS and read from pipeline cell #4 to see the laser signal (in 132ns mode) Gustavo Otero y Garzon- UIC

  6. L1 Module - Laser Gustavo Otero y Garzon- UIC

  7. L1 Module - Laser (2) Gustavo Otero y Garzon- UIC

  8. L1 Module (Data Mode) Gustavo Otero y Garzon- UIC

  9. L1 Module (trig. Mode) Gustavo Otero y Garzon- UIC

  10. L1-correlation (Data Mode) • RTPS on • RTPS off Gustavo Otero y Garzon- UIC

  11. L1-correlation (Trig- Mode) • RTPS on • RTPS off Gustavo Otero y Garzon- UIC

  12. L1-pedestals (Data Mode) Gustavo Otero y Garzon- UIC

  13. L1-pedestals (Trig Mode) Gustavo Otero y Garzon- UIC

  14. Conclusions • Need to reduce total noise (grounding issue) • Laser • Signal seen by run2b silicon detectors • Possible to measure Depletion V. and Leakage C. • Pedestals of L1 module • Trigger mode (no difference seen from 0V to 20V) • RTPS turn huge fluctuations to be decent • Data mode • RTPS on + 20V and RTPS off + no bias  looks ok • RTPS off + no bias and RTPS on +20V  looks bad • Correlation • Pedestal fluctuations of bonded chips are totally correlated • It reduces substantially with RPTS • No mayor changes with bias (20V) Gustavo Otero y Garzon- UIC

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