GaAs Microstrip Testbeam Results

S. Gowdy

GaAs Microstrip Testbeam Results

High Energy Physics - Experiment 2007-05-23 v1

Authors: S. Gowdy

Abstract

A gallium arsenide detector was tested with a beam of 70GeV pions at the {\sf SPS} at CERN. The detector utilises a novel biasing scheme which has been shown to behave as expected. The detector has a pitch of 50 $\mu$ m and therefore an expected resolution of 14.5 $\mu$ m. The measured resolution was approximately 14 $\mu$ m. By using a non-linear charge division algorithm this can be increased to $\approx$ 12 $\mu$ m. Noise was the limiting factor to the resolution. This was 2000e $^-$ as opposed to the expected 360e $^-$ . This noise is also thought to have reduced the detection efficiency of the detector. The source of the excess noise is currently being investigated.

Keywords

gaseous detectors particle detector precision measurements in physics

Cite

@article{arxiv.hep-ex/9509008,
  title  = {GaAs Microstrip Testbeam Results},
  author = {S. Gowdy},
  journal= {arXiv preprint arXiv:hep-ex/9509008},
  year   = {2007}
}

Comments

10 pages. 16 postscript figures + 1 postscript preprint logo + 1 LaTeX file + 2 non-standard style files. Uses epsfig. Files tarred, gzipped and uuencoded into 1 file. Also available at http://ppewww.ph.gla.ac.uk/preprints/95/04

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