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Run2b Silicon Electronics

This document presents a comprehensive overview of the latest measurements and analysis of Run2b Silicon electronics, focusing on spreadsheet features, laser measurements, pedestal distributions, and data correlations between chips. Key advancements highlighted include new flags for SASeq versions, DMC control for laser table movement, and enhanced export capabilities for visual data. Future work will include automatic scans of strip responses, depletion voltage measurements, and leakage current analysis. The findings emphasize the need to reduce noise and assess correlation in pedestal fluctuations across bonded chips.

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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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