FF150613 TOF » History » Version 1
Rajaram, Durga, 16 June 2013 22:32
1 | 1 | Rajaram, Durga | h1. FF150613 TOF |
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3 | 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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4 | Possible reasons are: |
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5 | 1) TOF z's used in Step I calibration do not match survey |
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6 | 2) the TDC->time conversion, which is known to be wrong by ~2 % |
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8 | Solution: |
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9 | Re-run calibration of Step I data (DR) |
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10 | To do this we need to know 1) the calibration runs, and 2) the TOF positions in Step I |
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11 | (Have asked Yordan and Mark which data-sets were used for the Step I calibration) |
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13 | The calibration has to be re-run for the latest data, in any case. |
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15 | The new calibrations should be uploaded to CDB (DR) |
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17 | Implement getting calibrations by RUN (DR) |
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18 | Implement getting a different calibration for the same RUN/time-range by looking at "id" (DR) |