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Steps & Results

Learn how to login to the daq01 farm, open files in the TOA GUI, and analyze histogram data. Explore the mean and sigma values from different databases for Q, TOF, and T-TOF measurements.

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Steps & Results

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  1. Steps & Results LIU Qian

  2. Login to the daq01 farm. • Input: “../i686-slc3-gcc323-opt/toa” (Hint: you don’t have to type the full path name, you can only type: ../i and then press “Tab”, the full path name will automatically show up.

  3. The TOA GUI is shown, choose any one from the history list or open a new one.

  4. Try to open “Q --- Reference --- Ref_1”, you can see there are 4 histograms below it. They are history data histograms/graphs.

  5. Choose the ‘mean & ..’, you can see the “Mean of Q history Data Graph”

  6. Results: From the Q-Ref-DB_2.ps , we can see the sigma of Ref are almost the same, and the mean increase. From the Q-TOF-DB_3.ps, the sigma of TOF counter and the mean increase. The sigma/mean is about 5% at 7.0 intensity. From the T-TOF-DB_4.ps, the sigma decreases as the pulse height increases.

  7. Hints: after you run the program and open one file to analysis, you can found these histogram in the tables, they are automatically generated.

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