Trigger study of ALPs

[tvami]

Issue description

Tasks

• Generate ALPs with different masses and lifetimes
• we have this class
  https://github.com/LDMX-Software/ldmx-sw/blob/e5dbf6964d16eded2af3e2319f95f7f0cdc8cefa/Recon/python/simple_trigger.py#L28-L53 you see in default it does

        self.start_layer = 0
        self.end_layer = 20

Now what I'd like you to do is to run a second version of this simple_trigger where the start is at 20 and the end is at 32.

• And then run the trigger DQM package like this
  https://github.com/LDMX-Software/ldmx-sw/blob/e5dbf6964d16eded2af3e2319f95f7f0cdc8cefa/DQM/python/dqm.py#L1032 this will give you these histograms in the histo.root file
  https://github.com/LDMX-Software/ldmx-sw/blob/e5dbf6964d16eded2af3e2319f95f7f0cdc8cefa/DQM/src/DQM/Trigger.cxx#L48-L54

so the project is to generate all kinda masses and lifetime ALPs and check how this modified trigger would behave, we'd like something to have high trigger eff for the signal. When that's done you'll run the same trigger on the bkg and hopefully see a small fraction of events passing

Existing material to start off

• https://github.com/IncandelaLab/LDMX-scripts/tree/master/PhotophobicALPs#readme