[ROOT] tracks from GEANT3 in ROOT

From: Ilektra A Christidi (christid@grad.physics.sunysb.edu)
Date: Tue Aug 12 2003 - 04:19:09 MEST


Hello
I finally managed to import the whole detector in ROOT and draw it 
properly (thanks! :o) ). I'm trying to do the same with tracks and hits, 
but it doesn't work: I save the JXYZ structure in the same zebra file as 
MATE, VOLU, etc. Then I g2root it, which seems to work ok - here is the 
output:


 ************** Directory ===> //LUN1 <===
                  Created 030811/1848 Modified 030811/1849
 ===> List of objects
     OBJECT VERSION CYCLE DATE/TIME NDATA
       MATE 1 1 030811/1848 109567
       PART 1 1 030811/1848 1745
       ROTM 1 1 030811/1848 365
       RUNG 1 1 030811/1848 47
       SETS 1 1 030811/1848 3403
       TMED 1 1 030811/1848 8542
       VOLU 1 1 030811/1848 130410
       JXYZ 1 1 030811/1849 172486
       JXYZ 2 1 030811/1849 41854
       JXYZ 3 1 030811/1849 436224
       JXYZ 5 1 030811/1849 19991
       JXYZ 9 1 030811/1849 94382
  Number of records = 997 Number of megawords = 1 + 20040 words
  Per cent of directory quota used = 99.700
  Per cent of file used = 99.700
  Blocking factor = 99.813
  In g2rin, iquest(13)= 75
  after rzink, ikey= 1iquest(1)= 0
 trying to read:MATE
  after rzink, ikey= 2iquest(1)= 0
 trying to read:PART
  after rzink, ikey= 3iquest(1)= 0
 trying to read:ROTM
  after rzink, ikey= 4iquest(1)= 0
 trying to read:RUNG
  after rzink, ikey= 5iquest(1)= 0
 trying to read:SETS
  after rzink, ikey= 6iquest(1)= 0
 trying to read:TMED
  after rzink, ikey= 7iquest(1)= 0
 trying to read:VOLU
  after rzink, ikey= 8iquest(1)= 0
 trying to read:JXYZ
  after rzink, ikey= 9iquest(1)= 0
 trying to read:JXYZ
  after rzink, ikey= 10iquest(1)= 0
 trying to read:JXYZ
  after rzink, ikey= 11iquest(1)= 0
 trying to read:JXYZ
  after rzink, ikey= 12iquest(1)= 0
 trying to read:JXYZ
  after rzink, ikey= 13iquest(1)= 1
  nkeys= 12 nwkey= 2
  nvolum= 185 jvolum= 3872631 Division volumePRM1 Division volumeSCY5
Division volumeSCX1 
Division volumeSCU1 
Division volumeSCY1 
Division volumeSCX3 
Division volumeSCU3 
Division volumeSCY3 
Division volumePRM2
Division volumeSCY6 
Division volumeSCX2 
Division volumeSCU2 
Division volumeSCY2 
Division volumeSCX4 
Division volumeSCU4 
Division volumeSCY4
 GEANT file: kopio_mc_19.rz converted to ROOT macro: kopio_mc_19.C   


but when I display my geometry in the TBrowser, the tracks folder is 
empty and when I try to draw them there is no response. What am I doing 
wrong?
I saved the hits separatelly in another zebra file, but this one core 
dumped when I tried to g2root it. Is there any tool in ROOT to handle 
GEANT3 HITS strucures (without the intermediate step of filling an ntuple, 
converting it into a TTree... etc), or not yet?

Thank you

					Ilektra Christidi



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