Prescaled Trigger: What Does It Mean?

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SUMMARY

The discussion clarifies the concept of prescaled triggers in event sampling, particularly in the context of managing data rates for low-energetic events. Prescaled triggers allow for the selective evaluation of triggers, where only a fraction of events (1 out of x) are stored, effectively reducing the overall trigger rate. This method is crucial for optimizing data collection while ensuring that significant low-energy events are still captured. The need for clear documentation of trigger publications in experiments is emphasized to enhance understanding and reproducibility.

PREREQUISITES
  • Understanding of event sampling techniques
  • Familiarity with trigger systems in data acquisition
  • Knowledge of low-energetic event characteristics
  • Experience with data rate management strategies
NEXT STEPS
  • Research the implementation of prescaled triggers in data acquisition systems
  • Explore techniques for optimizing trigger rates in high-energy physics experiments
  • Study the documentation standards for trigger publications in experimental setups
  • Learn about the impact of event selection on data quality and analysis
USEFUL FOR

Data scientists, experimental physicists, and engineers involved in data acquisition and event sampling who need to optimize data collection strategies while ensuring critical events are not missed.

ChrisVer
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Another question...
What does [un]prescaled trigger refer to? what is being scaled [and pre- to what]?
 
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All trigger publications of all the experiments should describe that.

You can't take everything at the full rate, but you still want some samples for e. g. low-energetic events, so you evaluate some triggers only for 1 out of x events, reducing the trigger rate (the rate of events that get stored based on this trigger) to a reasonable rate.
 

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