Mono-energetic simulation

Basically, all simulations in Geant4 are based on single-particle scenario, namely shooting particles one-by-one through the whole geometry. The initial particle is called “primary” particle. The interactions between primary particles are not considered by Geant4, neither the characteristic changes of detectors due to previous incoming particles, such as saturation. The response of detector geometry to one primary particle is called one Geant4 “event”. In principle, every event should be read out independently.

This page lists the simulations of particles with given energies repeatedly shoot through the geometry. The first of these simulations for LUXE ECAL was done in the end of 2020.

Environment variable:

export SinglePositron="/nfs/dust/luxe/group/MCProduction/SinglePositron"

time stamp	geometry commit	energy list	gun position	events per energy	position iden. method	root file path `$SinglePositron = /nfs/dust/luxe/group/MCProduction/SinglePositron`
`Dec 2020`	e-laser `86a1`	`1.5, 1, 2, 5, 8, 10, 12, 15, 16.5 GeV for e+` `1.5, 1, 2, 5, 8, 10, 12, 15, 16.5 GeV for mu-`	`IP ±5 mm (x/y)`	`1000`	Tracker or ECAL front	`$SinglePositron/SinglePositronShotHICS/lx86a1_fullSim`
`Feb 2021`	e-laser unknown g-laser unknown	`1.5, range(1, 15+), 16.5 GeV for e+` `~`	possible `~`	`1000`	`~`	`$SinglePositron/electron_laser` `$SinglePositron/gamma_laser`
`Jul 2021`	e-laser `6cac128`	`range(2, 12) GeV for e+`	`IP`	`10000`	Vac. window	`/nfs/dust/luxe/user/huangsha/simulation/lxsim_positron_mono_postcdr/run_2`
`Nov 2021`	e-laser `7671ee4` g-laser `55ae893`	`range(2.0, 15.0+, 0.5) GeV for e+` `~`	`z = -7.4 m` `IP`	`5000` `~`	Vac. window ~	`$SinglePositron/elaser_positron/mc21.singlePositron_.G4gun.SIM.se0002.root` `$SinglePositron/glaser_positron/mc21.singlePositron_.G4gun.SIM.sg0003.root`
`Aug 2022`	e-laser `6fa91b7`	`range(2.0, 15.0+, 0.5) GeV for e+`	`z = 4.3 m`	`1000`	ECAL centre	`$SinglePositron/elaser_positron/mc21.singlePositron_*_ECALP.G4gun.SIM.se0003.root`
`Feb 2023`	e-laser `cd3dbb1`	`range(2.5, 15.0+, 2.5) GeV for e+`	`z = 4.3 m`	`20,000`	ECAL centre	`$SinglePositron/elaser_positron/mc21.singlePositron_*_ECALP_run2.G4gun.SIM.se0003.root`
`Aug 2022`	e-laser `6fa91b7`	`range(1.8, 2.4, 0.1), range(2.4, 3.2+, 0.2), 3.5, 3.8, 4.2, 4.6, 5.2, 6.0, 7.0, 8.4, 10.6, 14.2 GeV for e+`	`IP`	`1000`	Vac. window	`$SinglePositron/elaser_positron/mc21.singlePositron_*.G4gun.SIM.se0003.root`

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Mono-energetic simulation