Event-of-the-Day

Thu 1 May 2003

Photo of the event-of-the-day for Thu 1 May, 2003.

Just the window with 2 muons -- photo of the event-of-the-day for Thu 1 May, 2003.

Today's event is a MC event. It is one that required me to fix the MC classification of events. To try to compare MC to data, I classify a MC event the usual way, and a second way by using the MCTR, and MCSP bank information. I have window types called TooEarly (t0<-5800.ns), and TooLate (t0>9800.ns). In today's event, two muons came: one before the "Too Late" time, and the other slightly after. My classification using MCTR info screwed up, because it ignored the second muon. That has now been fixed.


The MCTR info for this event is:
MCTR: itrack=  1 pid= 65 istop= 0 V=   -2.9776    0.9766 -300.0000
       P=     0.271     0.073    29.643 Q= 1 T=   -27.1 pmag=  29.644 cost=0.999955
MCTR: itrack=  1 pid= 65 istop= 1 V=   -0.4664    0.8876    0.0223 
       P=     0.000     0.000     0.000 Q= 1 T=    12.9 pmag=   0.000 cost=    -NaN
MCTR: itrack=  2 pid= 65 istop= 0 V=   -0.0966    0.3014 -300.0000 
       P=     0.006     0.032    29.552 Q= 1 T=  9720.8 pmag=  29.552 cost=0.999999
MCTR: itrack=  2 pid= 65 istop= 1 V=   -0.0902   -0.6405    0.0200 
       P=     0.000     0.000     0.000 Q= 1 T=  9761.1 pmag=   0.000 cost=    -NaN
MCTR: itrack=  3 pid= 65 istop= 0 V=    0.6013   -1.5595 -300.0000 
       P=    -0.017     0.283    29.620 Q= 1 T=  9803.2 pmag=  29.621 cost=0.999954
MCTR: itrack=  3 pid= 65 istop= 1 V=    0.2398    0.0783    0.0185 
       P=     0.000     0.000     0.000 Q= 1 T=  9843.7 pmag=   0.000 cost=    -NaN
MCTR: itrack=  4 pid=  2 istop= 0 V=   -0.4664    0.8876    0.0223 
       P=   -37.395   -13.016   -23.329 Q= 1 T=  1826.5 pmag=  45.957 cost=-.507622
MCTR: itrack=  4 pid=  2 istop= 5 V=   -9.5667    9.8556  -80.8612 
       P=     8.448    34.345   -21.711 Q= 1 T=  1831.9 pmag=  41.501 cost=-.523151
MCTR: itrack=  6 pid=  3 istop= 0 V=   -0.4723    0.8856    0.0185 
       P=    -0.162     0.294    -0.582 Q=-1 T=  1826.5 pmag=   0.672 cost=-.866583
MCTR: itrack=  6 pid=  3 istop= 2 V=   -0.4611    0.8667  -41.9930 
       P=     0.000     0.000     0.000 Q=-1 T=  1830.0 pmag=   0.000 cost=    -NaN

The two event classifications for the event with this bug fix are:

Using MCTR and MCSP bank info
 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  1  0  0  0  Min,MaxPl=  1  29  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=  1830.50  nMu,nDK,nBeame,nDeltas  0  1  0  1  Min,MaxPl=  1  29  Type=  2  (UpDecay)
 MCWindow=  5  T0=  0.000000  nMu,nDK,nBeame,nDeltas  0  0  0  0  Min,MaxPl=  0  0  Type=  5  (Empty)
 MCWindow=  6  T0=  9752.50  nMu,nDK,nBeame,nDeltas  2  0  0  0  Min,MaxPl=  1  29  Type=  6 (Overlap)
 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 (PC Overlap)

Using Usual Event Classification:
 EventType:   5  (PC Overlap)
 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.   1504., hits PC,DC=   8  26, Min,MaxZ=  -59.7   -0.2, type=   1
(Muon)
  window  3, T0=   1504., DC window=   1504.   1780., hits PC,DC=   0   0, Min,MaxZ=   99.0  -99.0, type=   5
(Empty)
  window  4, T0=   1831., DC window=   1780.   3330., hits PC,DC=  14  62, Min,MaxZ=  -59.7   -0.2, type=   2
(UpStream Decay)
  window  5, T0=   3330., DC window=   3330.   9703., hits PC,DC=   0   8, Min,MaxZ=  -48.2   -5.0, type=   5
(Empty)
  window  6, T0=   9752., DC window=   9703.  11252., hits PC,DC=  13  32, Min,MaxZ=  -59.7   -0.2, type=   6
(Overlap involved)
  window  7, T0=  11252., DC window=  11252.  20000., hits PC,DC=   0   0, Min,MaxZ=   99.0  -99.0, type=   5
(Empty)


Attached are two views of the event.  The first is the all window, all views shot (run1event30471_0.ps). 
Notice that the decay positron has a nice delta on it.  The other view, shows the UZ projection of the overlap
window with two muons (run1event30471_1.ps).

Last modified by Blair Jamieson.