Event-of-the-Day

Thu 10 Jul 2003

Photo of the event-of-the-day for Thu 10 Jul, 2003.

Today's event of the day is a scarry MC event. It is a decay within the fiducial volume, that I don't think we have much chance at reconstructing. The big problem with this event is that it hard scatters in the scintillator, and comes back all the way through the detector. This event got tagged as being too high angle because of the large cluster areas.


The MCTR information for this event is:
 ------ run:   1   event:   56017  geant seeds:   84002851  20  ------
 Have   10  MonteCarlo tracks
MCTR: itrack=  1 pid= 65 istop= 0 V=    0.3258    0.3784 -300.0000 P=     0.103     0.069    29.766 Q= 1 T=   -27.0 pmag=  29.766 cost=0.999991
MCTR: itrack=  1 pid= 65 istop= 1 V=   -0.1005   -0.8114    0.7997 P=     0.000     0.000     0.000 Q= 1 T=    13.3 pmag=   0.000 cost=    -NaN
MCTR: itrack=  2 pid=  2 istop= 0 V=   -0.1005   -0.8114    0.7997 P=   -20.312    23.393   -20.118 Q= 1 T=  1167.0 pmag=  36.940 cost=-.544613
MCTR: itrack=  2 pid=  2 istop= 1 V=    8.9444   -1.3322  116.2753 P=   -18.301   -10.105    19.708 Q= 1 T=  1218.1 pmag=  28.731 cost=0.685947
MCTR: itrack=  4 pid=  1 istop= 0 V=    7.8308   -1.3383   29.9946 P=    -4.133    -3.015     0.587 Q= 0 T=  1204.2 pmag=   5.150 cost=0.113966
MCTR: itrack=  4 pid=  1 istop= 1 V= -363.8877 -272.5090   82.7786 P=    -4.133    -3.015     0.587 Q= 0 T=  1219.7 pmag=   5.150 cost=0.113966
MCTR: itrack=  5 pid=  1 istop= 0 V=    8.9444   -1.3322  116.2753 P=   -12.200    -3.710    12.228 Q= 0 T=  1218.1 pmag=  17.667 cost=0.692149
MCTR: itrack=  5 pid=  1 istop= 1 V= -324.0029 -102.5778  450.0004 P=   -12.200    -3.710    12.228 Q= 0 T=  1234.2 pmag=  17.667 cost=0.692149
MCTR: itrack=  6 pid=  1 istop= 0 V=    8.9444   -1.3322  116.2753 P=    -6.101    -6.396     7.479 Q= 0 T=  1218.1 pmag=  11.579 cost=0.645943
MCTR: itrack=  6 pid=  1 istop= 1 V= -263.2998 -286.7020  450.0004 P=    -6.101    -6.396     7.479 Q= 0 T=  1235.4 pmag=  11.579 cost=0.645943

The classification using MC history is:
 nMCWindows:   5
 MCWindow=  1  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  2  T0=  4.00000  nMu,nDK,nBeame,nDeltas  1  0  0  0  Min,MaxPl=  1  30  Type=  1  (Muon)
 MCWindow=  3  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  4  T0=  1168.00  nMu,nDK,nBeame,nDeltas  0  1  0  0  Min,MaxPl=  30  56  Type=  9  (Upstream Decay (Scatter back downstream))
 MCWindow=  5  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 OVERALL MC EVENT TYPE=  30

The classification of today's event of the day was bang on for window types, but questionable for being too high angle:
 EventType:   30  (SimpleClean too high angle Type 2,7,11,16)
 Windows:   5
  window  1, T0= -10000., DC window= -10000.    -46., hits PC,DC=   0   0 Min,MaxZ=   99.0  -99.0, type=   5 (Empty)
  window  2, T0=      4., DC window=    -46.   1118., hits PC,DC=   8  23 Min,MaxZ=  -59.8    0.6, type=   1 (Muon)
  window  3, T0=   1118., DC window=   1118.   1118., hits PC,DC=  48 232 Min,MaxZ=  -59.4    0.2, type=   5 (Empty)
  window  4, T0=   1168., DC window=   1118.   2668., hits PC,DC=  28 151 Min,MaxZ=    0.6   59.8, type=  10 (Downstream Decay (Scatter back upstream))
  window  5, T0=   2668., DC window=   2668.  20000., hits PC,DC=   0   0 Min,MaxZ=   99.0  -99.0, type=   5 (Empty)

Last modified by Blair Jamieson.