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How do I define a silicon tracker?

Tracker barrel.

No Format

<detector id="1" name="TrackerBarrel" type="MultiLayerTracker" readout="TkrBarrHits">
  <layer id="1" inner_r = "20.000*cm" outer_z = "26.7*cm">
  <slice material = "Silicon" thickness = "0.00048*cm" />
  <!-- N layers can go here -->
</layer>

Tracker endcap.

No Format

<detector id="14" name="TrackerEndcap" type="DiskTracker" reflect="true" readout="TkrEndcapHits">
  <layer id="1" inner_r = "4.0*cm" inner_z = "30.0*cm" outer_r = "25.000*cm">
    <slice material = "Silicon" thickness = "0.03*cm" sensitive = "yes" />
  </layer>
  <!-- N layers can go here -->
</detector>

How do I define a TPC?

How do I define a tracker readout?

Unlike calorimeters, tracker hits are written out "in the raw" without any digitization (or binning), so no segmentation is used at the simulation level.

No Format

<readout name="TkrBarrHits">
  <id>layer:10,system:6,barrel:3</id>
</readout>

How do I define the magnetic field?

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