Download presentation
Presentation is loading. Please wait.
1
MDC Simulation & Digitization
Yuan Ye BesIII Software Meeting
2
Construction Layer Cell Equal Division Wire Straight Wire
Sensitive Area Sensitive Area Straight Wire Ideal Position
3
Hit Record every hit LayerNo CellNo Edeposit Ddift
Ttof (Global time from event begin) global local
4
Digitization Loop over all hits, combine hits from same
cell to one Digi Edigi=Edeposit Ddigi Energy cut Now Emin=0, needed T Do X-T conversion, T =Ttof + Tdrift Ddrift of minimum T
5
Digitization(Cont.) Smear Get Spatial Resolution from Cal.
x=(f 12+(1-f) 22)1/2 Sample between 1 2 use f Possible correction: Edigi Electronic correction 20m: 2= 1,22- electronic2 Sample use Ddigi=Ddigi+ Dsmear If Ddigi<0, do again
6
Digitization(Cont.) X-T conversion Ddigi Tdrift Create Tdigi T to TDC
Tdigi = Tdrift + Ttof + Ttransfer Possible Correct : Edigi & threshold T to TDC
7
Multiple Scatter vs Step Limit
@1GeV StepLimit cm pt Mev Now we set default is 2cm
8
Background Two methods: Mix background from data with MC
Add in digitization use some model (done) Digi mix (future) Mix background from data with MC
9
Thanks!
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.