Enjoyed the conversation. Wish you got more technical about ML/filtration though!,(reply>), @Mikhail Franco THANK YOU. will look into your links. Best YouTube comment ever,(reply>), The beam crossings that Harry describes happen at 40 MHz, which means every 25 ns. <br>The speed of light is 1 ft/ns, so the bunches are about 25 ft apart in the ring.<br>That also means when the detectors read out after a collision,<br>the analog/digital converters and pattern recognition firmware/software<br>have just 25 ns to make a decision to store all the data for an 'interesting' event,<br>or just pass and reset all the electronics in time for the next bunch.<br><br>There are about 20 particle interaction events in each bunch crossing,<br>so about 1 billion/sec to be filtered," and a target needle in this haystack<br>of about 1 in 100 billion (for the Higgs) so 1 Higgs every ~1.7 minutes:<br><br><a href=""https://lhc-machine-outreach.web.cern.ch/collisions.htm"">https://lhc-machine-outreach.web.cern.ch/collisions.htm</a><br><br>This subsystem is called the <i>'trigger'.</i><br>The implementation of the trigger is in layers of increasing sophistication",<br>simple fast stuff first, based on simple cuts for energy and angle," <br>then (relatively) slower patterns and particle combinations are evaluated:<br><br><a href=""https://www.lhc-closer.es/taking_a_closer_look_at_lhc/0.lhc_trigger"">https://www.lhc-closer.es/taking_a_closer_look_at_lhc/0.lhc_trigger</a><br><br>You might wonder how such software is tested.<br>There is a software package that simulates Standard Model physics",<br>emulates the detector in exquisite detail, and generates data events for LHC,"<br>using Monte Carlo distributions based on expected interaction rates.<br>The current package used by CERN for the LHC is called Geant4 <i>('Giant').</i><br><br><a href=""https://indico.cern.ch/event/634284/attachments/1476341/2337717/detector_simulation_lecture_2017.pdf"">https://indico.cern.ch/event/634284/attachments/1476341/2337717/detector_simulation_lecture_2017.pdf</a>"