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TRD occupancy monitor status report from 29.01.2013

TRD occupancy monitor status report from 29.01.2013. N.Nikonov. Problem’s signatures. 3 types of signatures: Gap in tracked hits distribution along the bad straw (Shape in bad straw is different from shape of others )

timothy-davidson
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TRD occupancy monitor status report from 29.01.2013

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  1. TRD occupancy monitor status report from 29.01.2013 N.Nikonov

  2. Problem’s signatures • 3 types of signatures: • Gap in tracked hits distribution along the bad straw (Shape in bad straw is different from shape of others ) • Number of tracked hits in bad straw is less than average of hits number in module (Shape in bad straw is the same)

  3. Problem’s signatures • 3 types of signatures: • Number of missed hits in bad straw is much bigger than in others for a given module

  4. Outline • For now it’s known 9 bad staws: 324, 1438, 1439, 2145, 2575, 3296, 3297, 4800, 4831 • The task is: develop online procedure to identify new BAD straws • First 2 signatures can be found use K-S tests of longitudinal straw hits distribution, compare to the • Longitudinal straw hits distribution for the rest of this module • Longitudinal straw hits distribution of the same straw in the beginning of the flight • The third signature requires alignment correction (disp ~ 1mm). The last data point for various allingments: • TrdKCalib 14 Dec 2012 • TrdSCalib 17 May 2012 • TrdQt 9 Sep 2012 • TrdMTrack 9 Sep 2012 No alignment available for ONLINE checks

  5. Event selection rate* for 1-min ROOT-files Rate [events/(straw * hour)] Straw ID * Evaluated use time of data acquisition (not live time). The goal is to estimate real time required to accumulate reasonable statistics per tube

  6. Event selection rate* for 1-min ROOT-filesSpatial distribution && bad straws TRD Layer Straw position X/Y * Evaluated use time of data acquisition (not live time). The goal is to estimate real time required to accumulate reasonable statistics per tube

  7. Kolmogorov-Smirnov tests resultsStraw vs. 15 straws average hits profile comparisonOnly shape TRD Layer Straw position X/Y

  8. Kolmogorov-Smirnov tests resultsStraw vs. 15 straws average hits profile comparisonOnly shape Straws number K-S probability

  9. Kolmogorov-Smirnov tests resultsStraw vs. 15 straws average hits profile comparisonShape + normalization TRD Layer Straw position X/Y

  10. Kolmogorov-Smirnov tests resultsStraw vs. 15 straws average hits profile comparisonShape + normalization Straws number K-S probability

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