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STT lookup table. [message #8355] Thu, 30 April 2009 13:40 Go to previous message
Lia Lavezzi
Messages: 291
Registered: May 2007
Location: Torino
first-grade participant

From: *pv.infn.it
Hi all,
I am writing the lookup table to be able to retrieve at the digi/reco step the geometry information of the straw tubes without the need of saving them as variables of the PndSttPoint.

I wanted to retrieve them from the parameters root file, but since I have to access the geo information for each point this seems to slow down both the digitization and (more) the reconstruction.
I was wondering (maybe this is a strange question Rolling Eyes ): is this an expected behaviour? I mean, is accessing the geo information from the parameter file a good idea or should I think of something else? Can it be that the switching between the simulation and parameter file slows down things?

If this is the reason, my second hypothesis would be to create an object PndSttTube and fill it with the geometry information, then save an array of all the tubes in the simulation output file (only once, not for each event). Could this speed up things?

I am just making some guess because I am fighting with this map and I can' t find a way out! Sad

Any comment/suggestion is welcome!!!

Thank you very much,
Lia.
 
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