The technique of z-coordinate determination using a time-difference measurement for the zeus central tracking detector

  • Harnew N
  • Nash J
  • Salmon G
 et al. 
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A method to determine the z-coordinate of a track using a time-difference measurement has been developed for the ZEUS Central Tracking Detector. It has been demonstrated that a spatial resolution of 50 mm can be obtained under normal chamber operating conditions. This corresponds to a time-difference resolution of 330 ps. A method of minimizing nonlinearities in the time-to-distance response is described. This uses an inductor to form a matching network to achieve resistive termination of the chamber. Test beam measurements from a prototype chamber are presented, demonstrating the effects of the chamber surface field and beam incidence angle on the time-difference resolution. © 1989.

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  • N. Harnew

  • J. Nash

  • G. L. Salmon

  • P. D. Shield

  • M. D. Jeffs

  • A. G. Parham

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