Test results of GaAs strip detectors in high energy particle beams

The first GaAs strip detector constructed in Aachen has been tested at CERN in a high energy particle beam in August and September 1994. The detector had a pitch of 200 μm and was made of a 508 μm thick Freiberger SI-GaAs wafer. Using the low noise Viking preamplifier chip [1] a signal to noise rati...

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Bibliographic Details
Published in:Nuclear physics. Section B, Proceedings supplement Proceedings supplement, 1995, Vol.44 (1), p.386-390
Main Authors: Braunschweig, W., Karpinski, W., Kubicki, Th, Lübelsmeyer, K., Ortmanns, J., Pandoulas, D., Pierschel, G., Rente, C., Siedling, R., Syben, O., Tenbusch, F., Toporowsky, M., Wilms, Th, Wittmer, B., Xiao, W.J.
Format: Article
Language:English
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Summary:The first GaAs strip detector constructed in Aachen has been tested at CERN in a high energy particle beam in August and September 1994. The detector had a pitch of 200 μm and was made of a 508 μm thick Freiberger SI-GaAs wafer. Using the low noise Viking preamplifier chip [1] a signal to noise ratio of 13 was obtained at normal beam incidence for a bias voltage of 450 V. Signal to noise ratios up to 26 were achieved depending on bias voltage and beam angle. Furthermore the spatial resolution of the GaAs detector was measured to be 72 μm without any correction for multiple scattering.
ISSN:0920-5632
1873-3832
DOI:10.1016/S0920-5632(95)80058-1