Event-of-the-Day

Tue 20 May 2003

Photo of the event-of-the-day for Tue 20 May, 2003.

Today's event of the day has two muons which end up in the same window near the trigger time. Since my event classification can't distinguish one muon from two muons, when they come too close together in time, this event gets called Type 27 "Other". Above is a photo of the event, where the green clusters are from the two muons, the yellow clusters are from one of the decay positrons, and the cyan clusters are from another decay positron.

The MCTR information for this event is:
 ------ run:   2   event:   2002  geant seeds:   694494940  0  ------
 Have   10  MonteCarlo tracks
MCTR: itrack=  1 pid= 65 istop= 0 V=    0.4216   -1.5251 -300.0000 P=     0.017     0.172    29.550 Q= 1 T=   -27.2 pmag=  29.551 cost=0.999983
MCTR: itrack=  1 pid= 65 istop= 1 V=    0.9204   -0.6834    0.0165 P=     0.000     0.000     0.000 Q= 1 T=    13.0 pmag=   0.000 cost=    -NaN
MCTR: itrack=  2 pid= 65 istop= 0 V=   -0.3259    1.0310 -300.0000 P=    -0.043    -0.291    29.418 Q= 1 T=   -10.4 pmag=  29.420 cost=0.999950
MCTR: itrack=  2 pid= 65 istop= 1 V=   -1.0997   -0.3033    0.0153 P=     0.000     0.000     0.000 Q= 1 T=    30.5 pmag=   0.000 cost=    -NaN
MCTR: itrack=  3 pid=  2 istop= 0 V=    0.9204   -0.6834    0.0165 P=     1.831    24.740   -25.917 Q= 1 T=   633.5 pmag=  35.876 cost=-.722406
MCTR: itrack=  3 pid=  2 istop= 5 V=    1.3594   -1.9595  -80.8848 P=    -3.164    21.124   -26.789 Q= 1 T=   637.3 pmag=  34.262 cost=-.781880
MCTR: itrack=  5 pid=  3 istop= 0 V=    1.5191   -2.6129  -80.0541 P=     0.485     0.289    -0.300 Q=-1 T=   637.2 pmag=   0.639 cost=-.469365
MCTR: itrack=  5 pid=  3 istop= 2 V=    1.5581   -2.5702  -80.0767 P=     0.000     0.000     0.000 Q=-1 T=   637.2 pmag=   0.000 cost=    -NaN
MCTR: itrack=  8 pid=  2 istop= 0 V=   -1.0997   -0.3033    0.0153 P=   -28.163   -30.765    -9.519 Q= 1 T=  1508.3 pmag=  42.781 cost=-.222498
MCTR: itrack=  8 pid=  2 istop= 5 V=  -13.1975    1.6417  -80.8610 P=   -15.182    27.514   -20.308 Q= 1 T=  1519.2 pmag=  37.416 cost=-.542765

The event classification with the help of MC history is:
 nMCWindows:   7
 MCWindow=  1  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  2  T0=  3.50000  nMu,nDK,nBeame,nDeltas  2  0  0  0  Min,MaxPl=  1  29  Type=  6  (Overlap involved)
 MCWindow=  3  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  4  T0=  634.000  nMu,nDK,nBeame,nDeltas  0  1  0  0  Min,MaxPl=  1  29  Type=  2  (UpStream Decay)
 MCWindow=  5  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  6  T0=  1510.00  nMu,nDK,nBeame,nDeltas  0  1  0  0  Min,MaxPl=  1  29  Type=  2  (UpStream Decay)
 MCWindow=  7  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 just TDC information is:
 EventType:   27  (Other)
 Windows:   7
  window  1, T0= -10000., DC window= -10000.    -47., hits PC,DC=   0   0, Min,MaxZ=   99.0  -99.0, type=   5 (Empty)
  window  2, T0=      4., DC window=    -47.    584., hits PC,DC=  13  41, Min,MaxZ=  -59.8   -0.2, type=   1 (Muon)
  window  3, T0=    584., DC window=    584.    584., hits PC,DC=   0   0, Min,MaxZ=   99.0  -99.0, type=   5 (Empty)
  window  4, T0=    634., DC window=    584.   1460., hits PC,DC=  12  37, Min,MaxZ=  -59.8   -0.2, type=   2 (UpStream Decay)
  window  5, T0=   1460., DC window=   1460.   1460., hits PC,DC=   0   0, Min,MaxZ=   99.0  -99.0, type=   5 (Empty)
  window  6, T0=   1510., DC window=   1460.   3010., hits PC,DC=  25  77, Min,MaxZ=  -59.8   -0.2, type=  20 (Dont know)
  window  7, T0=   3010., DC window=   3010.  20000., hits PC,DC=   0  12, Min,MaxZ=  -49.8   -9.8, type=   5 (Empty)

Last modified by Blair Jamieson.