DF Definitions of Tracking Elements

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Hits

Hits are representations of the locations where a particle flying through the drift chamber layers induces a voltage pulse in a nearby wire. In the image below they are represented by the red hexagons.

DF DC Hits.png

Below is an example of how Hits are stored in a Hipo file.

 SHOWING BANK
------------------------+---------------------------+
>>>> GROUP (group= 20621) (name=HitBasedTrkg::HBHits):
------------------------+---------------------------+
          id (   SHORT) :        114       129       125       103        56        54        55        52        53        50        72        73        74        76        90        85        86        83        84        94        92       130       132       133        81        87       134        88       113       122       112       120       111       110       109       108       106       105        98       124       100       101       115       116         1         2         3         4         5         6         7         8         9        10        11        12        13        14        15        16        18        17        20        19        21        23        24        25        26        27        32        34        33        36        35        39        38        41        40
      status (   SHORT) :          0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0         0
      sector (    BYTE) :          1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         1         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3         3
  superlayer (    BYTE) :          2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         2         1         1         1         1         1         1         2         2         2         2         2         2         3         3         3         3         3         3         3         3         4         4         4         4         4         4         5         5         5         5         5         5         5         5         5
       layer (    BYTE) :          1         2         3         5         3         4         4         5         5         6         1         2         2         3         4         5         5         6         6         1         2         2         3         4         5         5         6         6         1         1         2         2         3         3         4         4         5         5         1         2         3         4         4         5         1         2         3         4         5         6         1         2         3         4         5         6         1         2         3         4         5         5         6         6         1         2         3         4         5         6         2         3         3         4         4         5         5         6         6
        wire (   SHORT) :         40        43        42        40        12        11        12         9        10         9        26        27        28        29        29        28        29        27        28        31        31        32        32        32        31        32        32        33        35        38        36        38        35        36        36        37        37        38        41        42        41        41        42        41        61        61        61        61        61        61        60        61        60        61        60        61        48        48        47        47        46        47        46        47        44        44        43        43        42        42         8         6         7         5         6         3         4         3         4
         TDC (     INT) :         75        27        36        25        13        47        89        28       120       129        78       126        11        28       160        72        17        93        71       154        32       169       114        34        44        99        89         6        76       108        66       119       155       146       122       121        10        89        16        38        13         7        21        21        25       103        65        65       112        20       147        44        94        89        41       144        44        24        92       145       204       274       277       210       149       112        99        78        64        72       147       267       242       418        95       567        11        92       414
     trkDoca (   FLOAT) :    -1.0000   -1.0000   -1.0000   -1.0000    0.0731    0.2925    0.5119    0.5119    0.2925    0.0731    1.4833    1.0587    0.3088    2.1009    1.1580    0.2151    1.5826    2.0954    0.7279    0.0055    0.9282    0.4420    0.8785    0.0552    0.9890    0.3812    0.5525    0.8177    1.5174    2.6210    1.0346    1.7244    1.9313    0.5518    1.4485    0.0690    0.4138    1.7933    0.2795    0.4945    0.1290    0.7525    0.6450    0.0215    0.1909    0.4199    0.3054    0.3054    0.4199    0.1909    0.1998    0.4395    0.3197    0.3197    0.4395    0.1998    0.2469    0.0000    0.2469    0.4938    0.7407    1.2345    0.9876    0.9876    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0199    0.5494    1.3383    1.1486    0.7392    1.6781    0.2096    0.3895    1.4983
   docaError (   FLOAT) :     0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.1941    0.1941    0.1941    0.1941    0.1941    0.1941    0.2032    0.2032    0.2032    0.2032    0.2032    0.2032    0.3127    0.3127    0.3127    0.3127    0.3127    0.3127    0.3127    0.3127    0.3311    0.3311    0.3311    0.3311    0.3311    0.3311    0.4701    0.4701    0.4701    0.4701    0.4701    0.4701    0.4701    0.4701    0.4701
          LR (    BYTE) :          0         0         0         0         1         1        -1         1        -1        -1         1         1        -1        -1        -1        -1        -1         1         1        -1         1        -1        -1         1         1        -1         1        -1         1        -1         1        -1         1         1         1         1        -1        -1         1        -1         1         1        -1        -1        -1         1        -1         1        -1         1         1        -1         1        -1         1        -1        -1         1         1         1         1        -1         1        -1        -1        -1        -1        -1        -1        -1         1         1        -1         1        -1         1        -1         1        -1
        LocX (   FLOAT) :     1.0000    2.0000    3.0000    5.0000    3.0000    4.0000    4.0000    5.0000    5.0000    6.0000    1.0000    2.0000    2.0000    3.0000    4.0000    5.0000    5.0000    6.0000    6.0000    1.0000    2.0000    2.0000    3.0000    4.0000    5.0000    5.0000    6.0000    6.0000    1.0000    1.0000    2.0000    2.0000    3.0000    3.0000    4.0000    4.0000    5.0000    5.0000    1.0000    2.0000    3.0000    4.0000    4.0000    5.0000    1.0000    2.0000    3.0000    4.0000    5.0000    6.0000    1.0000    2.0000    3.0000    4.0000    5.0000    6.0000    1.0000    2.0000    3.0000    4.0000    5.0000    5.0000    6.0000    6.0000    1.0000    2.0000    3.0000    4.0000    5.0000    6.0000    2.0000    3.0000    3.0000    4.0000    4.0000    5.0000    5.0000    6.0000    6.0000
        LocY (   FLOAT) :    46.7654   49.6521   49.0748   46.7654   14.4338   12.7017   13.8564   10.9697   12.1244   10.3923   30.5996   31.1769   32.3316   34.0637   33.4863   32.9090   34.0637   31.1769   32.3316   36.3731   35.7957   36.9504   37.5278   36.9504   36.3731   37.5278   36.9504   38.1051   40.9919   44.4560   41.5692   43.8786   40.9919   42.1466   41.5692   42.7239   43.3013   44.4560   47.9201   48.4974   47.9201   47.3427   48.4974   47.9201   71.0141   70.4367   71.0141   70.4367   71.0141   70.4367   69.8594   70.4367   69.8594   70.4367   69.8594   70.4367   56.0030   55.4256   54.8483   54.2709   53.6936   54.8483   53.1162   54.2709   51.3842   50.8068   50.2295   49.6521   49.0748   48.4974    9.2376    7.5056    8.6603    5.7735    6.9282    4.0415    5.1962    3.4641    4.6188
           X (   FLOAT) :     0.0000    0.0000    0.0000    0.0000  -71.6639  -73.7759  -72.3679  -75.8878  -74.4799  -76.5918  -51.9523  -51.2483  -49.8404  -47.7284  -48.4324  -49.1364  -47.7284  -51.2483  -49.8404  -44.9125  -45.6164  -44.2085  -43.5045  -44.2085  -44.9125  -43.5045  -44.2085  -42.8005  -39.2806  -35.0567  -38.5766  -35.7606  -39.2806  -37.8726  -38.5766  -37.1686  -36.4646  -35.0567  -30.8327  -30.1287  -30.8327  -31.5367  -30.1287  -30.8327   -1.6736   -2.3461   -1.6736   -2.3461   -1.6736   -2.3461   -4.0813   -3.3773   -4.0813   -3.3773   -4.0813   -3.3773  -24.1981  -25.2812  -26.3643  -27.4474  -28.5305  -26.3643  -29.6136  -27.4474  -34.9155  -36.0625  -37.2095  -38.3565  -39.5035  -40.6506 -158.4696 -163.2955 -160.0383 -168.2414 -164.9842 -173.0673 -169.8101 -174.7560 -171.4987
           Z (   FLOAT) :     0.0000    0.0000    0.0000    0.0000  242.3253  243.5380  243.5380  244.7507  244.7507  245.9633  239.9000  241.1127  241.1127  242.3253  243.5380  244.7507  244.7507  245.9633  245.9633  239.9000  241.1127  241.1127  242.3253  243.5380  244.7507  244.7507  245.9633  245.9633  239.9000  239.9000  241.1127  241.1127  242.3253  242.3253  243.5380  243.5380  244.7507  244.7507  239.9000  241.1127  242.3253  243.5380  243.5380  244.7507  229.2365  230.3950  231.5534  232.7119  233.8704  235.0289  239.9000  241.1127  242.3253  243.5380  244.7507  245.9633  353.4097  355.2754  357.1411  359.0069  360.8726  360.8726  362.7383  362.7383  373.7406  375.7163  377.6921  379.6679  381.6437  383.6195  494.7098  497.5153  497.5153  500.3207  500.3207  503.1261  503.1261  505.9315  505.9315
           B (   FLOAT) :     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000
       TProp (   FLOAT) :     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000
     TFlight (   FLOAT) :     0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000    0.0000
   clusterID (   SHORT) :         -1        -1        -1        -1         1         1         1         1         1         1         2         2         2         2         2         2         2         2         2         3         3         3         3         3         3         3         3         3         4         4         4         4         4         4         4         4         4         4         5         5         5         5         5         5         6         6         6         6         6         6         7         7         7         7         7         7         8         8         8         8         8         8         8         8         9         9         9         9         9         9        10        10        10        10        10        10        10        10        10
       trkID (    BYTE) :         -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1        -1
------------------------+---------------------------+


Clusters

Segments

Crosses

Tracks

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