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Geometry overlaps!!!!! [message #8289]

Fri, 24 April 2009 09:36

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

first-grade participant

From: *gsi.de

Hallo Detector experts,

It seems that there is a lot of problems in the Panda geometry which couse the simulation to crash specially when using new packages of ROOT and VMC (ROOT 5.23.2, Geant4.9.2.p1, etc). I attached to this mail 2 root files with:

overlaps.root: obtained using the FullSolenoid.root file for the Soleniod and the macro run_sim1.C. in this file you will see 447 overlaps! mostly between MDT and Soleniod
V833_overlaps.root: the same as before with the PandaSolenoidV833.root as geometry file for the Soleniod. THis has also 538 overlaps!

With this geometry as it is now it is almost impossible to run any simulation! I will try to investigate if this has anything to do with the new packages but please take a look also to the overlaps and check your detectors if the geometry is really correct!

To see the overlaps, simply open the attached root file, then open the root browser and double klick the FAIRGeom object (TGeo) the you will see a folder Illegal overlaps:

index.php?t=getfile&id=5283&private=0

inside this folder you can see the overlaps:

index.php?t=getfile&id=5285&private=0

if you double klick any of these overlaps you will get some info (names and so on) in the terminal and it will be drawn on a canvas:

index.php?t=getfile&id=5286&private=0

Please check this, most of them are small overlaps which could be avoided by using better precision!

regards

Mohammad

Attachment: snapshot2.png
(Size: 26.11KB, Downloaded 1044 times)
Attachment: snapshot3.png
(Size: 8.54KB, Downloaded 959 times)
Attachment: snapshot1.png
(Size: 19.31KB, Downloaded 700 times)
Attachment: V833_overlaps.root
(Size: 1.66MB, Downloaded 445 times)
Attachment: overlaps.root
(Size: 1.64MB, Downloaded 439 times)

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[Message index]

		Geometry overlaps!!!!! By: Mohammad Al-Turany on Fri, 24 April 2009 09:36
		Re: Geometry overlaps!!!!! By: StefanoSpataro on Fri, 24 April 2009 09:41
		Re: Geometry overlaps!!!!! By: Tobias Stockmanns on Fri, 24 April 2009 10:00
		Re: Geometry overlaps!!!!! By: Mohammad Al-Turany on Fri, 24 April 2009 12:10
		Re: Geometry overlaps!!!!! By: Aleksandra Wronska on Thu, 30 April 2009 14:41
		Re: Geometry overlaps!!!!! By: Mohammad Al-Turany on Thu, 30 April 2009 23:33

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