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FF150613 TOF » History » Version 1

Rajaram, Durga, 16 June 2013 22:32

1 1 Rajaram, Durga
h1. FF150613 TOF
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In Step I data, Ed sees that the e+ TOF(0->1) is 26ns instead of 25.6 (as predicted by post-Step I survey geometry)
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Possible reasons are:
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1) TOF z's used in Step I calibration do not match survey
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2) the TDC->time conversion, which is known to be wrong by ~2 %
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Solution:
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Re-run calibration of Step I data (DR)
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To do this we need to know 1) the calibration runs, and 2) the TOF positions in Step I
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(Have asked Yordan and Mark which data-sets were used for the Step I calibration)
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The calibration has to be re-run for the latest data, in any case.
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The new calibrations should be uploaded to CDB (DR)
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Implement getting calibrations by RUN (DR)
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Implement getting a different calibration for the same RUN/time-range by looking at "id" (DR)