GAAS SOLID-STATE DETECTORS FOR PHYSICS AT THE LHC

Progress with Schottky diode and p i n diode GaAs detectors for minimu m ionizing particles is reported here. The radiation hardness and pote ntial speed of simple diodes is shown to be more than competitive with silicon detectors. A discussion is given of the present understanding of the charge transport mechanism in the detectors as it influences t heir charge collection efficiency. Early results from micro-strip dete ctors are also described, (which are relevant for high radiation regio ns of LHC detectors near the beam pipe and in the forward region).