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Visualization of trajectories from simulation [message #25353]

Thu, 19 November 2020 21:03

Yassid
Messages: 11
Registered: October 2015

occasional visitor

From: 35.9.63*

Hi

I am trying to figure out how to enable the visualization of trajectories using the event display. For the moment, the only way I found is to go to FairEventManager, click on the particle and click on the Refs tab (on the bottom of the GUI) and then click in any of the PathMarks. When I do that, the trajectory appears. However,I do not understand the trajectory itself. In the screenshot I attach, there is a proton coming out of the target and entering into a gaseous volume I included there to debug. The Hits (blue squares) are correctly visualized but they do not correspond to the trajectory of the particle (red line).

Thanks for your help

Yassid

Attachment: Capture_ATTPCROOT_2.JPG
(Size: 69.45KB, Downloaded 715 times)
Attachment: Capture_ATTPCROOT.JPG
(Size: 126.03KB, Downloaded 733 times)

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Re: Visualization of trajectories from simulation [message #25470 is a reply to message #25353]

Fri, 05 March 2021 13:00

Daniel Wielanek
Messages: 14
Registered: October 2012
Location: Warsaw

occasional visitor

From: *dynamic.gprs.plus.pl

Hi,
Are you sure that this is the only particle in simulation? In FairTrajFilter you can try to change the cuts for visualization cuts. Maybe those hits are not from this proton.

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Re: Visualization of trajectories from simulation [message #25476 is a reply to message #25353]

Fri, 05 March 2021 13:58

Tobias Stockmanns
Messages: 489
Registered: May 2007

first-grade participant

From: *nc.de

Hi Yassid,

which task do you use to visualize the tracks? FairGeoTrackDraw or something else?
For PANDA the tracks are plotted directly after one selects on event.

Could it be that your hit points are wrong? It is hard to tell with the plots you uploaded up for me it looks if in the projection along the beam the hits match with the track.

Cheers,

Tobias

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