Difference: StrawTubeTracker (1 vs. 3)

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20 Apr 2012 - Main.PaolaGianotti
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META TOPICPARENT name="WebHome"
-- PaolaGianotti - 20 Sep 2008
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Physics Requirements

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The requirements for the charged particle tracking of the PANDA detector are derived from physics channels we want to measure. A small set of channels which are regarded as the important for the tracking system of PANDA have been identified and are used as the tracking benchmark channels. The following table is reporting the full list of tracking benchmark channels.

Benchmark channels to evaluate the performance of the Straw Tube Tracker

The main task of the STT is the efficient reconstruction of charged particle trajectories with high resolution and almost full solid angle coverage. In addition to the precise determination of the momenta of charged particles, the capability to reconstruct decay vertices of longer-lived neutral particles, e.g. hyperons, is also required. The identification of different particle species by their specific energy loss is an additional task, to which the STT is expected to contribute for momenta below 1 GeV/c.
 

META FILEATTACHMENT attr="h" comment="General view of Straw Tube Tracker" date="1221898972" name="F.jpg" path="F.jpg" size="2554188" user="PaolaGianotti" version="1.1"
Revision 2
20 Sep 2008 - Main.PaolaGianotti
Line: 1 to 1
 
META TOPICPARENT name="WebHome"
-- PaolaGianotti - 20 Sep 2008
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PANDA Straw Tube Tracker (STT)

 

General Description

* General view of Straw Tube Tracker:
General view of Straw Tube Tracker
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Table 1: Straw Tube Tracker main parameters.

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The first and the last four double-layers are parallel to the beam axis, while the intermidiate ones are arranged with a skew angle of ± 3o. This is necessary to reconstruct the particles z coordinate. Among the tracking devices straw tubes show many advantages:

  • small signal's cross-talk;
  • insensitivity of neighboring straws in case of faults;
  • good mechanical stability in case of close-packed multi-layers;
  • high tracking efficiency;
  • good spatial resolution;
  • high rate capability.

Physics Requirements

 

META FILEATTACHMENT attr="h" comment="General view of Straw Tube Tracker" date="1221898972" name="F.jpg" path="F.jpg" size="2554188" user="PaolaGianotti" version="1.1"
 
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