Difference between revisions of "SVT Results at UNH"

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<gallery>
 
<gallery>
 
Image:Y_x.jpg|y vs x global coordinate position of hits in the SVT detector.  
 
Image:Y_x.jpg|y vs x global coordinate position of hits in the SVT detector.  
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Image:X_y_x_wierd.jpg|Part of the detector sticking out?
+
Image:X_y_z_weird.jpg|Part of the detector sticking out?
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Image:y_vs_x3.jpg|y vs x global coordinate position of hits in the SVT detector. 3 out of 4 SL required.
+
Image:Svt_gaps.jpg|Gaps between SVT sectors. (1mm according to Maurizio)
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Image:Theta_correct.jpg|Theta distributions. black: all generated events. All other colors: require hits in increasing number of layers
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Image:Theta_correct.jpg|Theta distributions. The lower right is an overlay of all the others.
 
Image:Pion_pro.jpg|Edep vs P for protons and pions. Left: both, Center: protons, Right: pions
 
Image:Pion_pro.jpg|Edep vs P for protons and pions. Left: both, Center: protons, Right: pions
 
Image:Edep_vs_strip.jpg|Energy deposited versus strip number
 
Image:Edep_vs_strip.jpg|Energy deposited versus strip number
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Image:nhits.jpg|Number of hits. Black: any hits. Red:
+
Image:Nbsthit.jpg|Number of hits. Our binning is very small. (100)
 
Image:theta_vs_z_1hitperlayer.jpg|Theta vs generated vertex for hits in all the SVT layers
 
Image:theta_vs_z_1hitperlayer.jpg|Theta vs generated vertex for hits in all the SVT layers
 
Image:Edep.jpg|Edep
 
Image:Edep.jpg|Edep

Latest revision as of 18:55, 28 July 2008

First SVT results

This page shows our versions of the analysis results Maurizio posted at http://clasweb.jlab.org/wiki/index.php/First_SVT_results complete with ROOT source. I am shamelessly stealing his wiki code, too.

Details:

  • Except for the proton and pion graph, we are using protons generated with momentum range 0.2 to 3.8 GeV, covering all angles uniformly
  • The evio output is converted to ROOT output with evio2root
  • The gemc commands to generate the two used data sets are:
$GEMC/gemc -GT=BST -PRINT_EVENT=10000 -BEAM_P="proton, 2.0*GeV, 0*deg, 0*deg" \
-SPREAD_P="1.9999*GeV, 180*deg, 360*deg" -SPREAD_V="(0.1, 0.1, 2.5)cm" \
-OUTPUT="evio, proton_500000.ev" -N=500000 -LUMI_P="e-, 11*GeV, 0, 0" \
-LUMI_V="(0, 0, -5)cm" -LUMI_EVENT="100, 124*ns, 2*ns" -USE_PHYSICSL=QGSP \
-HALL_MATERIAL=Vacuum -USE_QT=0

and 

$GEMC/gemc -GT=BST -PRINT_EVENT=10000 -BEAM_P="pi+, 2.0*GeV, 0*deg, 0*deg" \
-SPREAD_P="1.9999*GeV, 180*deg, 360*deg" -SPREAD_V="(0.1, 0.1, 2.5)cm" \
-OUTPUT="evio, pion_500000.ev" -N=500000 -LUMI_P="e-, 11*GeV, 0, 0" \
-LUMI_V="(0, 0, -5)cm" -LUMI_EVENT="100, 124*ns, 2*ns" -USE_PHYSICSL=QGSP \
-HALL_MATERIAL=Vacuum -USE_QT=0

  • y vs x global coordinate position of hits in the SVT detector.

  • Part of the detector sticking out?

  • Gaps between SVT sectors. (1mm according to Maurizio)

  • Theta distributions. The lower right is an overlay of all the others.

  • Edep vs P for protons and pions. Left: both, Center: protons, Right: pions

  • Energy deposited versus strip number

  • Number of hits. Our binning is very small. (100)

  • Theta vs z 1hitperlayer.jpg

    Theta vs generated vertex for hits in all the SVT layers

  • Edep

  • phi versus z for hits in all the SVT layers

  • p versus phi for hits in all the SVT layers

  • P vs theta 1hitperlayer.jpg

    p versus theta for hits in all the SVT layers

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