Refactoring WireCell Electron Drift Simulation for proto DUNESP

Refactoring Wire-Cell Electron Drift Simulation for proto. DUNESP Wenqiang Gu Brookhaven National Lab

Proto. DUNE-SP simulation task force • Aim at two major updates • Refactored larg 4 simulation (David Rivera, UPenn) • Wire. Cell electron drift simulation (Wenqiang Gu, BNL) • Other subsystems • Optical detector simulation (Wei Mu, FNAL) • CRT simulation (Richie Diurba, U Minnesota) LAr. Soft Coordination Meeting, Oct 8 Wenqiang Gu 2

Refactored framework (Hanz et al. ) Refactored (larg 4) Current (larsim/LAr. G 4) Electron drift module More readings about refactored simulation larg 4: [Hanz Wenzel] https: //indico. fnal. gov/event/18681/session/6/contribution/61/material/slides/0. pdf [David Rivera] https: //indico. fnal. gov/event/21037/contribution/2/material/slides/0. pdf LAr. Soft Coordination Meeting, Oct 8 Wenqiang Gu 3

Wire. Cell Electron Drift Simulation • Long-range induction effect field response (2 D effect: time, wire) Wire pitch direction • Diffusion, lifetime, etc. Drift direction Ionization electrons Charge deposit G U V W DUNE collaboration meeting, May 2019 LAr. Soft Coordination Meeting, Oct 8 Induced current Long-range induction Wenqiang Gu 4

larwirecell v 08_06_0 Refactoring larwirecell • Geometry from gdml LAr. Soft Coordination Meeting, Oct 8 Wenqiang Gu 5

MC backtracking: Sim. Channel 140 Decon. charge Ticks Ch#140 Ticks Channel • Sim. Channel: energy depo. from all G 4 tracks saved separately in time - per channel • Time alignment: decon. vs Sim. Channel • Charge width: extra smearing from signal processing (expected) LAr. Soft Coordination Meeting, Oct 8 Wenqiang Gu 6

Next step • Add extra smearing in “Sim. Channel” (optional) • Validate field response: data vs. MC • Improve agreement in d. E/dx: data vs. MC (old version) LAr. Soft Coordination Meeting, Oct 8 Bipolar response avg. over channels in a cosmic dataset (Wenqianget Gual. ) Stopping muon (Ajib et al. ) 7

Fhicl’s • Base version: larsoft v 08_31_01 • Feature branches dunetpc lardataobj larsim larg 4 larwirecell @ feature/wgu_refact @ feature/muve_pdsim_refactor @ feature/wgu_refact • Usage: • • lar -c gen_proto. Dune_muon_1 Ge. V_mono. fcl -n 1 -o gen. root lar -c proto. DUNE_refactored_g 4. fcl -n 1 gen. root -o g 4. root lar -c wcls-sim-drift-simchannel. fcl -n 1 g 4. root -o detsim. root lar -c proto. DUNE_refactored_reco. fcl -n 1 detsim. root -o reco. root LAr. Soft Coordination Meeting, Oct 8 Wenqiang Gu larg 4 Ion. And. Scint PDFast. Si m Shift. EDep. SC E Wire. Cell Elec Drift 8

Summary • Generalized wirecell module to perform electron drift simulation • Sim. Channel’s time offset is perfectly matched with the deconvolved charge • Need some improvement in field response and d. E/dx LAr. Soft Coordination Meeting, Oct 8 Wenqiang Gu 9