Project

General

Profile

Actions

Feature #2370

open

Shift of TRD digi time distribution: TB vs EbE

Added by Oleg Golosov 6 months ago. Updated 3 months ago.

Status:
New
Priority:
Normal
Target version:
Start date:
12/09/2021
Due date:
% Done:

0%

Estimated time:

Description

I discovered that TRD digi time distribution is shifted left by ~55 ns in time-based simulation compared to the event-by-event mode (see attached).
Is it an expected feature? Which value is the right one?

The two distributions were produced using the same transport file, sis100_electron setup, CbmRoot 15c78e78, FairRoot 18.2.1, FairSoft jun19p2.

As far as I understand this should not affect the performance in the EbE case but the proper value is needed for tuning the time-based reconstruction.


Files

trd_digi_time.png (63.1 KB) trd_digi_time.png Oleg Golosov, 12/09/2021 02:11 PM
Actions #1

Updated by Volker Friese 6 months ago

What is your time reference in the time-based mode? Is it the time of the MC event?

Actions #2

Updated by Oleg Golosov 6 months ago

Yes, it's the time of the matched MC event from the branch "MCEventList".
Using this time reference for all the other detectors (except MUCH which I have not looked at) produces distributions almost identical to those from EbE simulations.

Actions #3

Updated by Florian Uhlig 3 months ago

  • Assignee changed from Pascal Raisig to Alexandru Bercuci

Alexandru Bercuci,

could you please take care or assign the issue to the appropriate person. The issue was still assigned to Pascal.

Actions #4

Updated by Florian Uhlig 3 months ago

Is there any progress?

Actions

Also available in: Atom PDF