pisa slist sien sturn init sturn on teta 20 15 25 1 phi 20 170 190 trig lscan 2000 sien xpThe plot is empty, and the requested binning (20×20) seems to be ignored. LSCAN doesn't seem to work in the Pisa/Geant-3 environment, but see added notes below on the equivalent Root procedure. |
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(Added 31 Oct 2008:)
From Zhengyun You, using the root GeoManager:
root -l fvtxgeom.root (see these instructions)
PHENIX->GetVolume("SIEN")->LegoPlot()
or for more control:
PHENIX->GetVolume("SIEN")->LegoPlot(20,0.,180., 60.,0.,360., 0.,100.,"")
ranges: theta phi r
To get it in a plain 2D plot, as shown here:
TH2F *h2 = PHENIX->GetVolume("SIEN")->LegoPlot....
h2->Draw("lego")
Volume SIEN is the overall VTX/FVTX enclosure.
This plot shows the barrel between θ=65-120°. This is slightly asymmetric, so you can see the barrel φ structure, with gaps top (90°) and bottom (180°). Also visible is a small 1/cos(θ) dependence, and at θ=120° some more material kicks in. |
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From Maki Kurosawa, VTX software meeting 31 oct 2008 ppt, this plot (in black):
I added in blue the θ-range shown in the lego plot. Thickness is 9-10%. If I take a slice from the lego plot between 124°-214°, and lay it over this graph (red) I come out a few percent higher (probably beam pipe, outer enclosure?). A good match. | 
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