Overview Displays


Last updated 19 March 1999
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The overview displays are not really kumacs, but text displays. They can be found on the monitor to the left of the the LHM (left hand metheus). Included below are examples of the overview displays for the 2.75 and 10.5 degree spectrometers. I have embedded comments in the 10.5 degree overview display to suggest ways to use the information. The comments are preceeded by ****. In general, large changes in the overview quantities suggest changes in the electronics or beam conditions that should pursued in detail using the other diagnostics.
OverviewRem      2.75-deg Spectrometer  Run 2263 Spill      40058                                                                   
  GENERAL OVERVIEW FOR SPECTROMETER 2.75                                                                                            
                                                                                                                                    
 Number of analyzed spills :      2584                                                                                              
 Average charge this run :   1.89e+10                                          
**** This should be e+9 (Steve is going to fix this)  
                                                                                                                                    
 SHOWER COUNTER :                                                                                                                   
 Mean number of blocks above 0.2 GeV hit per spill 29.78                                                                            
 Mean number of shower clusters per spill   :   7.71                           **** If this number suddenly changes, we may have bad beam conditions,
     bad electronics, etc.--this is your warning to check the other
     diagnostics.                                                     

 Mean number of electron clusters per spill (shower id) :   2.56               
**** If the above number gets much larger than about 3, we will
     probably have trouble reconstructing the showers.  Check the
     beam current, timing histograms, etc.

                                                     
 Mean number of pion clusters per spill (shower id) :   5.14                                                                        
 Mean number of pile up in shower counter per spill :   5.63                                                                        
                                                                                                                                    
 HODOSCOPES : Number of hits per plane per spill                                                                                    
Plane n  1 :   58.77 +-    0.30                                                                                                     
Plane n  2 :   47.42 +-    0.28                                                                                                     
Plane n  3 :   37.65 +-    0.26                                                                                                     
Plane n  4 :   37.51 +-    0.27                                                                                                     
Plane n  5 :   33.82 +-    0.24                                                                                                     
Plane n  6 :   44.79 +-    0.27                                                                                                     
Plane n  7 :  118.70 +-    0.50                                                                                                     
Plane n  8 :   93.85 +-    0.52                                                                                                     
Plane n  9 :  106.54 +-    0.49                                                                                                     
Plane n 10 :   82.74 +-    0.41                                                **** If you see factor of 2ish changes in any of these (or zero!), 
something has probably gone wrong with a TDC or discriminator. 
                                                                                                                                    
 CERENKOV : Number of pulses per tank per spill                                                                                     
 Tank 1 :   6.53                                                                                                                    
 Tank 2 :   6.06                                                                                                                    
 Coinc  :   3.11                                                               
                                                     
                                                                                                                                    
 COINCIDENCES BETWEEN CERENKOV TANKS AND SHOWER COUNTERS                                                                            
 Mean # of coincidences between C1 C2 Shower: 2.637 ; per PE:   0.14E+06                                                            
 Mean # of coincidences between C1H C2H Shower H 1.911 ; per PE:   0.10E+06                                                         
 Mean # of coincidences between C1H C2H Shower neur. net. 1.869 ; per PE:   0.99E+05                                                
                                                                                                                                    
 TRACKING:                                                                                                                          
 Mean # tracks: 3.049 ; per PE:   0.16E+06                                                                                          
 Mean # electron tracks: 1.564 ; per PE:   0.83E+05                            
**** The number above should be used for the the run sheets...

 Mean # of tracks of: Class 1  Class 2  Class 3  Class 4                                                                            
                        2.239    0.810    0.000    0.000                                                                            
 EFFECIENCIES                                                                                                                       
  Track     E/P       C1        C2        SH                                                                                        
     0.827     0.821     0.953     0.920     0.926                                                                                  
  C1*C2                                                                                                                             
     0.868     0.000     0.000     0.000     0.000                                                                                  
                                                                                                                                    
 HITS/SPILL IN EACH TDC MODULE                                                                                                      
  modul #/spil  modul #/spil  modul #/spil  modul #/spil                                                                            
       1  67.2       2  56.3       3  64.9       4  39.1                                                                            
       5  42.6       6  34.6       7  47.7       8  20.0                                                                            
       9  64.3      10  40.9      11  31.9      12  42.1                                                                            
      13  16.2      14  16.8      15  25.1      16  20.3                                                                            
      17  43.6      18  37.5      19  16.2      20  13.2                                                                            
      21  24.7      22  18.3      23  41.0      24  20.7                                                                            
      25  31.4      26   3.2      27   5.0      28   0.7                                                                            
      29   1.0      30   3.7      31   0.2      32   2.9                                                                            
      33   2.2      34   3.5                                                                                                        
 total tdc hits/spill= 899.1                                                                                                        
                                                                                                                                    
 HITS/SPILL ADC =  20.4                                                                                                             
OverviewRem      10.5-deg Spectrometer  Run 2263 Spill      40589                                                                   
  GENERAL OVERVIEW FOR SPECTROMETER 10.5                                                                                            
                                                                                                                                    
 Number of analyzed spills :      4597                                                                                              
 Average charge this run :   1.89e+10                                                                                               
                                                                                                                                    
 SHOWER COUNTER :                                                                                                                   
 Mean number of blocks above 0.2 GeV hit per spill  2.63                                                                            
 Mean number of shower clusters per spill   :   2.10                                                                                
 Mean number of electron clusters per spill (shower id) :   0.06                                                                    
 Mean number of pion clusters per spill (shower id) :   2.04                                                                        
 Mean number of pile up in shower counter per spill :   0.55                                                                        
                                                                                                                                    
 HODOSCOPES : Number of hits per plane per spill                                                                                    
Plane n  1 :   75.34 +-    0.26                                                                                                     
Plane n  2 :   79.58 +-    0.23                                                                                                     
Plane n  3 :   73.48 +-    0.22                                                                                                     
Plane n  4 :   54.86 +-    0.22                                                                                                     
Plane n  5 :   42.86 +-    0.19                                                                                                     
                                                                                                                                    
 CERENKOV : Number of pulses per tank per spill                                                                                     
 Tank 1 :   2.58                                                                                                                    
 Coinc  :   0.00                                                                                                                    
                                                                                                                                    
 COINCIDENCES BETWEEN CERENKOV TANKS AND SHOWER COUNTERS                                                                            
 Mean # of coincidences between C1 C2 Shower: 0.000 ; per PE:   0.00E+00                                                            
 Mean # of coincidences between C1H C2H Shower H 0.000 ; per PE:   0.00E+00                                                         
 Mean # of coincidences between C1H C2H Shower neur. net. 0.000 ; per PE:   0.00E+00                                                
                                                                                                                                    
 TRACKING:                                                                                                                          
 Mean # tracks: 0.161 ; per PE:   0.86E+04                                                                                          
 Mean # electron tracks: 0.027 ; per PE:   0.14E+04                                                                                 
 Mean # of tracks of: Class 1  Class 2  Class 3  Class 4                                                                            
                        0.032    0.130    0.000    0.000                                                                            
 EFFECIENCIES                                                                                                                       
  Track     E/P       C1        PR        SH                                                                                        
     0.477     0.777     0.931     0.922     1.000                                                                                  
  C1*PR                                                                                                                             
     0.867     0.000     0.000     0.000     0.000                                                                                  
                                                                                                                                    
 HITS/SPILL IN EACH TDC MODULE                                                                                                      
  modul #/spil  modul #/spil  modul #/spil  modul #/spil                                                                            
       1 155.3       2  10.9       3   3.4       4  56.6                                                                            
       5 126.5       6  66.4                                                                                                        
 total tdc hits/spill= 419.1                                                                                                        
                                                                                                                                    


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{Updated by Lee Sorrell}