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added non-ionizing energy from edep-sim, subtracted from total for ch… #155

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added non-ionizing energy from edep-sim, subtracted from total for ch… #155

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3 changes: 3 additions & 0 deletions cli/dumpTree.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
("dx", "f4"), ("long_diff", "f4"),
("pixel_plane", "i4"), ("t_end", "f4"),
("dEdx", "f4"), ("dE", "f4"), ("t", "f4"),
("dEdx_nonIonizing", "f4"), ("dE_nonIonizing", "f4"),
("y", "f4"), ("x", "f4"), ("z", "f4"),
("n_photons","f4")], align=True)

Expand Down Expand Up @@ -302,6 +303,7 @@ def dump(input_file, output_file):
segment[iHit]["t0_end"] = hitSegment.GetStop().T() * edep2us
segment[iHit]["t_end"] = 0
segment[iHit]["dE"] = hitSegment.GetEnergyDeposit()
segment[iHit]["dE_nonIonizing"] = hitSegment.GetSecondaryDeposit()
xd = segment[iHit]["x_end"] - segment[iHit]["x_start"]
yd = segment[iHit]["y_end"] - segment[iHit]["y_start"]
zd = segment[iHit]["z_end"] - segment[iHit]["z_start"]
Expand All @@ -313,6 +315,7 @@ def dump(input_file, output_file):
segment[iHit]["t0"] = (segment[iHit]["t0_start"] + segment[iHit]["t0_end"]) / 2.
segment[iHit]["t"] = 0
segment[iHit]["dEdx"] = hitSegment.GetEnergyDeposit() / dx if dx > 0 else 0
segment[iHit]["dEdx_nonIonizing"] = hitSegment.GetSecondaryDeposit() / dx if dx > 0 else 0
segment[iHit]["pdgId"] = trajectories[hitSegment.Contrib[0]]["pdgId"]
segment[iHit]["n_electrons"] = 0
segment[iHit]["long_diff"] = 0
Expand Down
12 changes: 9 additions & 3 deletions larndsim/quenching.py
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Expand Up @@ -26,19 +26,25 @@ def quench(tracks, mode):
dEdx = tracks[itrk]["dEdx"]
dE = tracks[itrk]["dE"]

dEdx_nonIonizing = tracks[itrk]["dEdx_secondary"]
dE_nonIonizing = tracks[itrk]["dE_secondary"]

dEdx_ionizing = dEdx - dEdx_nonIonizing
dE_ionizing = dE - dE_nonIonizing

recomb = 0
if mode == physics.BOX:
# Baller, 2013 JINST 8 P08005
csi = physics.BOX_BETA * dEdx / (detector.E_FIELD * detector.LAR_DENSITY)
csi = physics.BOX_BETA * dEdx_ionizing / (detector.E_FIELD * detector.LAR_DENSITY)
recomb = max(0, log(physics.BOX_ALPHA + csi)/csi)
elif mode == physics.BIRKS:
# Amoruso, et al NIM A 523 (2004) 275
recomb = physics.BIRKS_Ab / (1 + physics.BIRKS_kb * dEdx / (detector.E_FIELD * detector.LAR_DENSITY))
recomb = physics.BIRKS_Ab / (1 + physics.BIRKS_kb * dEdx_ionizing / (detector.E_FIELD * detector.LAR_DENSITY))
else:
raise ValueError("Invalid recombination mode: must be 'physics.BOX' or 'physics.BIRKS'")

if isnan(recomb):
raise RuntimeError("Invalid recombination value")

tracks[itrk]["n_electrons"] = recomb * dE / physics.W_ION
tracks[itrk]["n_electrons"] = recomb * dE_ionizing / physics.W_ION
tracks[itrk]["n_photons"] = (dE/light.W_PH - tracks[itrk]["n_electrons"]) * light.SCINT_PRESCALE