Event-of-the-Day

Tue 13 May 2003

Photo of the event-of-the-day for Tue 13 May, 2003.

Today's event of the day is a MC event in which a beam positron hit something hard enough to stop in the detector. Attached is a photo of the event (run2event17882_0.gif). The green clusters are a beam positron that passes through the detector, the yellow clusters are the muon, the pink+cyan clusters are the beam positron that stops in the detector, and the dark blue clusters are the decay positron. The fact that the beam positron stopped in the detector confused my event classification. Again I think this is rare enough that I don't need to worry about it -- but I should put in a counter for this.

The MCTR info for this event is:
 ------ run:   2   event:   17882  geant seeds:   130495697  6  ------
 Have   10  MonteCarlo tracks
MCTR: itrack=  1 pid= 65 istop= 0 V=   -0.9006    0.0355 -300.0000 P=0.153    -0.098    29.422 Q= 1 T=   -27.3 pmag=  29.423 cost=0.999981
MCTR: itrack=  1 pid= 65 istop= 1 V=    0.7245   -1.3832    0.0200 P=0.000     0.000     0.000 Q= 1 T=    13.2 pmag=   0.000 cost=    -NaN
MCTR: itrack=  2 pid=  2 istop= 0 V=    0.8237   -1.1082 -300.0000 P=0.005    -0.211    29.649 Q= 1 T= -3270.7 pmag=  29.650 cost=0.999975
MCTR: itrack=  2 pid=  2 istop=98 V=    0.0878   -2.0868  151.4220 P=-1.329    -1.540    29.024 Q= 1 T= -3255.5 pmag=  29.095 cost=0.997553
MCTR: itrack=  3 pid=  2 istop= 0 V=    3.4520   -1.3010 -300.0000 P=-0.076    -0.258    29.607 Q= 1 T=  2600.9 pmag=  29.609 cost=0.999959
MCTR: itrack=  3 pid=  2 istop= 1 V=   -0.4601   -1.9936   34.7942 P=-7.043     2.453    28.322 Q= 1 T=  2612.2 pmag=  29.287 cost=0.967034
MCTR: itrack=  4 pid=  2 istop= 0 V=    0.7245   -1.3832    0.0200 P=7.034   -16.834   -24.534 Q= 1 T=  3694.6 pmag=  30.574 cost=-.802439
MCTR: itrack=  4 pid=  2 istop= 5 V=    0.8147   -3.8596  -80.8610 P=-2.667   -13.777   -24.014 Q= 1 T=  3698.0 pmag=  27.813 cost=-.863397
MCTR: itrack=  8 pid=  1 istop= 0 V=   -0.4601   -1.9936   34.7942 P=-7.462     2.425    28.316 Q= 0 T=  2612.2 pmag=  29.383 cost=0.963694
MCTR: itrack=  8 pid=  1 istop= 5 V=  -13.0006    2.0815   82.3849 P=-7.462     2.425    28.316 Q= 0 T=  2613.9 pmag=  29.383 cost=0.963694


The event classification with the help of MCTR and MCSP information is:
 nMCWindows:   9
 MCWindow=  1  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0 Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  2  T0= -3260.50  nMu,nDK,nBeame,nDeltas  0  0  1  0 Min,MaxPl=  1  56  Type=  4  (Beam Positron)
 MCWindow=  3  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0 Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  4  T0=  4.50000  nMu,nDK,nBeame,nDeltas  1  0  0  0 Min,MaxPl=  1  29  Type=  1  (Muon)
 MCWindow=  5  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0 Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  6  T0=  2611.50  nMu,nDK,nBeame,nDeltas  0  0  1  0 Min,MaxPl=  1  41  Type=  4  (Beam Positron)
 MCWindow=  7  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0 Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  8  T0=  3699.00  nMu,nDK,nBeame,nDeltas  0  1  0  0 Min,MaxPl=  1  29  Type=  2  (UpStream Decay)
 MCWindow=  9  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0 Min,MaxPl=  0  0  Type=  5  (Empty)
 OVERALL MC EVENT TYPE=  2

The event classification using only tdc information is:
EventType:   27  (Other)
 Windows:   9
  window  1, T0= -10000., DC window= -10000.  -3311., hits PC,DC=   0 0, Min,MaxZ=   99.0  -99.0, type=   5 (Empty)
  window  2, T0=  -3260., DC window=  -3311.  -1760., hits PC,DC=  15 45, Min,MaxZ=  -59.8   59.8, type=   4 (Beam Positron)
  window  3, T0=  -1760., DC window=  -1760.    -45., hits PC,DC=   0 1, Min,MaxZ=  -34.6  -34.6, type=   5 (Empty)
  window  4, T0=      5., DC window=    -45.   1504., hits PC,DC=   7 22, Min,MaxZ=  -59.8   -0.2, type=   1 (Muon)
  window  5, T0=   1504., DC window=   1504.   2562., hits PC,DC=   6 29, Min,MaxZ=  -59.8   -0.6, type=   5 (Empty)
  window  6, T0=   2611., DC window=   2562.   3649., hits PC,DC=   3 13, Min,MaxZ=   -0.2   34.6, type=  10 (Downstream Decay (Scatter back upstream))
  window  7, T0=   3649., DC window=   3649.   3649., hits PC,DC=   0 0, Min,MaxZ=   99.0  -99.0, type=   5 (Empty)
  window  8, T0=   3699., DC window=   3649.   5199., hits PC,DC=  11 35, Min,MaxZ=  -59.8   -0.2, type=  20 (Dont know)
  window  9, T0=   5199., DC window=   5199.  20000., hits PC,DC=   0 6, Min,MaxZ=  -48.2   -5.0, type=   5 (Empty)


-Blair

Last modified by Blair Jamieson.