GSI Forum: Tracking » Problem with secondary tracks

Home » PANDA » PandaRoot » Tracking » Problem with secondary tracks

Show: Today's Messages :: Polls :: Message Navigator

Re: Problem with secondary tracks [message #12377 is a reply to message #12375]

Thu, 28 July 2011 18:29

Mohammad Al-Turany
Messages: 518
Registered: April 2004
Location: GSI, Germany

first-grade participant

From: 46.248.220*

Hi,

There is a filter on secondary particles, by default, this filter will skip secondary particles that:
1. do not hit any detector
and
2. do not have any daughter that hit any detector

such particles can never be detected and we simply delete the and reindex the whole mother-doughter relations in the TClonesArrays and the MCTrack
(all what goes to the Tree is consistence)

Now if you have classes that do not inherits from the MCpoint classes in framework or you do your own things (you save the particle Id your self in the simulation in some privet classes), then I can imagine that you get some discrepancies!

Anyway, this filter can be easily switched off in the g4/3Config.C macro:

/// create the Specific stack
   PndStack *stack = new PndStack(1000); 
   stack->StoreSecondaries(kTRUE);
   stack->SetMinPoints(1);

if you set the min points to zero, i.e:

/// create the Specific stack
   PndStack *stack = new PndStack(1000); 
   stack->StoreSecondaries(kTRUE);
   stack->SetMinPoints(0);

Then all particles will be saved to the output without any filtering. But this could increase the file sizes dramatically.

I hope this will help you.

regards from the sunny Jordan with 40 degrees in shadow.

Mohammad

Report message to a moderator

[Message index]

		Problem with secondary tracks By: Felix Boehmer on Thu, 28 July 2011 18:10
		Re: Problem with secondary tracks By: Mohammad Al-Turany on Thu, 28 July 2011 18:29
		Re: Problem with secondary tracks By: Felix Boehmer on Thu, 28 July 2011 21:12
		Re: Problem with secondary tracks By: Mohammad Al-Turany on Thu, 28 July 2011 23:24
		Re: Problem with secondary tracks By: Johannes Rauch on Fri, 29 July 2011 16:48

Previous Topic:	bug in PidCorrelator
Next Topic:	Update on eta_c reconstruction with STT and TPC

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sun Mar 15 04:08:46 CET 2026

Total time taken to generate the page: 0.00813 seconds