Forward Track Detectors

Next: The ZEUS Global Trigger Up: New Instrumentation and Trigger Previous: The H1 Forward Silicon Contents

Forward Track Detectors

Two new modules of Straw Tube Trackers have been implemented in the forward region of the ZEUS detector which are interleaved with the existing three sets of planar drift chamber modules. Each of the modules consists of four superlayers of straws as shown in fig.55.

**Figure 55:** The two new ZEUS Straw Tube Tracker modules with four superlayers each.
$\begin{figure}\unitlength1cm \begin{picture}(10.,7.5) \put(4.,0.){\epsfig{figure=figs/stt.eps,height=7.5cm}} \end{picture} \end{figure}$

In the case of H1 five new planar drift chambers were installed each with eight wires strung perpendicular to the beam axis. Including the existing planar drift chambers up to 76 hits can be obtained for tracks going in the forward direction.

Andreas Meyer 2006-02-13