Difference: CloudDAQ (14 vs. 15)

Revision 152006-10-19 - AndreDavid

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META TOPICPARENT name="AndreDavid"

DAQ strategy for CLOUD prototype beamtest

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  Our conclusion is that for the beam test of CLOUD, the coaxial link may be appropriate, but if the experiment finds NTP to be a good overall solution for their DAQ, then provisions should be made to upgrade that link.
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Practical guide

To properly embbed your detector properly into the CLOUD DAQ, please take note of the following points:

  • NTP configuration

  • It is not acceptable that timestamps are saved in local time! There are two simple alternatives:
    • Save the number of seconds since a certain point in time
    • Save the timestamp in UTC

  • For every measurement save two timestamps:
    • after the data was taken
    • and, if you only measure seldomly (not continuously) also before you start the measurement

  • Do not forget to calibrate the time it takes for a measurement to reflect what happened in the chamber at a given instant for your detector. This means you must take into account:
    • the speed (flow) of the gas
    • the distance at which the detector sits from the chamber
    • etc (please think about these)

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