| Getting Hits by detectors registered in the output root file [message #13418] |
Thu, 26 April 2012 22:47  |
Raghav Kunnawalkam
Messages: 63
Registered: February 2012
Location: Stony Brook, New York
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continuous participant |
From: *physics.sunysb.edu
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Hi All
As a lot of you know by now, i am working towards getting a working model of the EIC detector. I have the geometry all constructed properly and i am also seeing (in the event display) showers and collisions and every thing else.
But the one thing i am not seeing is anything inside my root files, specifically my branch FairFgtDetPoint has no data inside the leaves. Let me explain clearly.
For simplicity i will just take one detector from my EIC and work on it, FGT (Forward Gem Tracker).
If i build it fully here is the number of nodes and the volume.
Info in <TGeoManager::Voxelize>: Voxelizing...
Info in <TGeoManager::CloseGeometry>: Building cache...
Info in <TGeoManager::CloseGeometry>: 28 nodes/ 9 volume UID's in FAIR geometry
Info in <TGeoManager::CloseGeometry>: ----------------modeler ready----------------
and this is what it looks like
Now i will show you how the root file looks like
You can see that there is nothing inside my leaves in the root file.
For this particular FGT here is part of the geometry file:
//*************************************************
fgt01FGGD#1
cave
TUBE
air
0.000000 0.000000 -7.500000
301.000000 810.000000
0.000000 0.000000 7.500000
0.000000 0.000000 1415.000000
1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000
//*************************************************
fgt01FGGD#2
cave
0.000000 0.000000 1515.000000
1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000
//*************************************************
fgt01FGGD#3
cave
0.000000 0.000000 1615.000000
1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000
//changed FGT_FR4 to FGT_kapton
fgt01FGGF#1
fgt01FGGD#1
TUBE
FGT_kapton
0.000000 0.000000 -0.125000
301.000000 810.000000
0.000000 0.000000 0.125000
0.000000 0.000000 -7.375000
1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000
....
In order to get something in my root file, i tried to make it even simpler and built just one disc.
I find that if first volume (fgt01FGGD#1) is made of air, then no matter how many nodes of other volumes i add to my fgt detector, i am not getting anything in my root file.
But if i make it with silicon for example, then i am seeing data in the output file.
This is very puzziling to me.
Another place in my EMLF detector, i have more than 9900 nodes and they all look the same except different positions in space. So i have them defined as
emlf01box#1
cave
BOX
PWO
15.000000 -15.000000 -400.000000
15.000000 15.000000 -400.000000
-15.000000 15.000000 -400.000000
-15.000000 -15.000000 -400.000000
15.000000 -15.000000 400.000000
15.000000 15.000000 400.000000
-15.000000 15.000000 400.000000
-15.000000 -15.000000 400.000000
-1485.000000 -1485.000000 3601.000000
1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000
//*************************************************
emlf01box#2
cave
-1485.000000 -1455.000000 3601.000000
1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000
//*************************************************
emlf01box#3
cave
-1485.000000 -1425.000000 3601.000000
1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000
....
Here also i am facing the same problem. I am not able to register any hits in the root file, but i can see the shower that particles create on striking the detector.
Any help will be much appreciated
Cheers
Raghav
[Updated on: Thu, 26 April 2012 22:49] Report message to a moderator |
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