TriggerBypassing

To study trigger efficiencies it is possible to ignore the L1 and L2 trigger algorithms for a configurable proportion of events. Every event will bypass L1 and L2 with an adjustable probability L1BypassProbability. If an event is bypassing L1 it will get the L1 trigger type word TRIGGER_L1_BYPASS defined in na62-farm-lib/structs/Event.h. Events reaching L2 that did not bypass L1 will bypass L2 with the probability defined by the option L2BypassProbability and get the L2 trigger type word TRIGGER_L2_BYPASS defined in na62-farm-lib/structs/Event.h. Events that already bypassed L1 will also get the L2 bypass trigger type word.

The probability parameters can be defined in the trigger configuration file /etc/na62-trigger.conf

L1BypassProbability

Probability for every event to bypass L1 and L2

L2BypassProbability

Probability for every event to bypass L2 if it did not bypass L1