Event-of-the-Day

Wed 21 May 2003

Photo of the event-of-the-day for Wed 21 May, 2003.

Today's event of the decay is a MC event where the first particle seen in the detector is a decay positron. The decay positron is from a muon which comes before our event gate. Above is a photo of the event, where the green clusters are from the early decay positron, the yellow clusters are from a muon and prompt decay in the upstream direction, and the cyan and blue clusters are from two beam positrons. Since the event has a PC overlap window, the event gets called overlap with the event classification with the help of MC history. Using only TDC information, the event classification calls the early decay positron an "unknown" window -- this causes the event to get classified as Event Type 27 (Other).

The MCTR information for this event is:
 ------ run:   2   event:   7508  geant seeds:   565772226  2  ------
 Have   16  MonteCarlo tracks
MCTR: itrack=  1 pid= 65 istop= 0 V=   -0.8570    0.5140 -300.0000 P=     0.054     0.218    29.764 Q= 1 T=   -27.0 pmag=  29.765 cost=0.999972
MCTR: itrack=  1 pid= 65 istop= 1 V=    0.1397   -0.0174    0.0167 P=     0.000     0.000     0.000 Q= 1 T=    13.4 pmag=   0.000 cost=    -NaN
MCTR: itrack=  2 pid= 65 istop= 0 V=   -0.1236    0.2109 -300.0000 P=    -0.075    -0.234    29.730 Q= 1 T=-12178.7 pmag=  29.731 cost=0.999966
MCTR: itrack=  2 pid= 65 istop= 1 V=   -0.6394    0.4597    0.0213 P=     0.000     0.000     0.000 Q= 1 T=-12138.5 pmag=   0.000 cost=    -NaN
MCTR: itrack=  3 pid=  2 istop= 0 V=    0.5033   -0.0708 -300.0000 P=    -0.002    -0.084    29.397 Q= 1 T=  3907.5 pmag=  29.398 cost=0.999996
MCTR: itrack=  3 pid=  2 istop=98 V=    0.1084   -1.1676  151.2458 P=    -0.484     0.099    28.167 Q= 1 T=  3922.5 pmag=  28.171 cost=0.999846
MCTR: itrack=  4 pid=  2 istop= 0 V=    3.9565   -2.5844 -300.0000 P=    -0.088     0.095    29.573 Q= 1 T=  6347.7 pmag=  29.574 cost=0.999990
MCTR: itrack=  4 pid=  2 istop=98 V=    2.8058   -2.8671  150.1253 P=     0.322    -2.012    28.856 Q= 1 T=  6362.8 pmag=  28.928 cost=0.997517
MCTR: itrack=  5 pid=  2 istop= 0 V=    0.1397   -0.0174    0.0167 P=    -9.234    26.102   -32.785 Q= 1 T=   101.2 pmag=  42.912 cost=-.764011
MCTR: itrack=  5 pid=  2 istop= 5 V=    5.6598    6.3292  -80.8610 P=    21.988    -7.899   -28.597 Q= 1 T=   104.8 pmag=  36.928 cost=-.774408
MCTR: itrack=  7 pid=  1 istop= 0 V=    4.9269    6.4938  -79.9472 P=     1.913    -0.185    -2.294 Q= 0 T=   104.7 pmag=   2.992 cost=-.766595
MCTR: itrack=  7 pid=  1 istop= 5 V=    5.6888    6.4199  -80.8610 P=     1.913    -0.185    -2.294 Q= 0 T=   104.8 pmag=   2.992 cost=-.766595
MCTR: itrack= 10 pid=  2 istop= 0 V=   -0.6394    0.4597    0.0213 P=    32.616    -6.637   -15.554 Q= 1 T= -4467.8 pmag=  36.739 cost=-.423353
MCTR: itrack= 10 pid=  2 istop= 5 V=   -3.2934    0.6116  -80.8611 P=    21.023     8.559   -23.828 Q= 1 T= -4461.5 pmag=  32.909 cost=-.724063
MCTR: itrack= 13 pid=  3 istop= 0 V=   -0.3243   -0.2793  -81.2383 P=    -0.308    -0.707     0.673 Q=-1 T=  3914.8 pmag=   1.024 cost=0.657643
MCTR: itrack= 13 pid=  3 istop= 2 V=   -0.1053   -0.1706    0.0179 P=     0.000     0.000     0.000 Q=-1 T=  3918.5 pmag=   0.000 cost=    -NaN
 MC Muon spin:  -0.989113


The event classification with the help of MC history 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= -4462.50  nMu,nDK,nBeame,nDeltas  0  1  0  0  Min,MaxPl=  1  29  Type=  2  (UpStream Decay)
 MCWindow=  3  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  4  T0=  6.50000  nMu,nDK,nBeame,nDeltas  1  1  0  0  Min,MaxPl=  1  29  Type=  6  (Overlap involved)
 MCWindow=  5  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  6  T0=  3916.00  nMu,nDK,nBeame,nDeltas  0  0  1  1  Min,MaxPl=  1  56  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=  6356.50  nMu,nDK,nBeame,nDeltas  0  0  1  0  Min,MaxPl=  1  56  Type=  4  (Beam Positron)
 MCWindow=  9  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 OVERALL MC EVENT TYPE=  5

The event classification using only TDC information is:
 EventType:   27  (Other)
 Windows:   9
  window  1, T0= -10000., DC window= -10000.  -4513., hits PC,DC=   0   0, Min,MaxZ=   99.0  -99.0, type=   5 (Empty)
  window  2, T0=  -4463., DC window=  -4513.  -2962., hits PC,DC=  12  51, Min,MaxZ=  -59.8   -0.2, type=  20 (Dont know)
  window  3, T0=  -2962., DC window=  -2962.    -43., hits PC,DC=   0   1, Min,MaxZ=  -22.6  -22.6, type=   5 (Empty)
  window  4, T0=      7., DC window=    -43.   1506., hits PC,DC=  16  56, Min,MaxZ=  -59.8   -0.2, type=   6 (Overlap involved)
  window  5, T0=   1506., DC window=   1506.   3866., hits PC,DC=   0   1, Min,MaxZ=   -5.0   -5.0, type=   5 (Empty)
  window  6, T0=   3916., DC window=   3866.   5416., hits PC,DC=  20  59, Min,MaxZ=  -59.8   59.8, type=   4 (Beam Positron)
  window  7, T0=   5416., DC window=   5416.   6306., hits PC,DC=   0   1, Min,MaxZ=  -22.6  -22.6, type=   5 (Empty)
  window  8, T0=   6356., DC window=   6306.   7856., hits PC,DC=  15  46, Min,MaxZ=  -59.8   59.8, type=   4 (Beam Positron)
  window  9, T0=   7856., DC window=   7856.  20000., hits PC,DC=   0   0, Min,MaxZ=   99.0  -99.0, type=   5 (Empty)

Last modified by Blair Jamieson.