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Epochs and Timelines for a DUNE Far Detector DAQ Configuration System

Document #:
Document type:
DUNE document
Submitted by:
Brett Viren
Updated by:
Brett Viren
Document Created:
10 Apr 2019, 08:17
Contents Revised:
10 Apr 2019, 08:17
Metadata Revised:
10 Apr 2019, 08:17
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Description of foundational elements for managing DAQ configuration and inherent races between real and data times. The core objects of epochs and timelines are described and how they are connected to configurations. A primary potential race condition the DAQ must face is detailed. The connection to the run/subrun numbering proposal by the DAQ "data model working group" is discussed. Then a few pages of "narrative" are given to describe various scenarios where epochs and timelines may act. Finally, pointers to existing and developing implementation are given.
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