Semi-transparent silicon strip sensors for the precision alignment of tracking detectors

Novel semi-transparent optical position sensors ('ALMY sensors') have been developed for the alignment monitoring systems of modern large-area tracking detectors. More than 10 sensors can be aligned along one laser beam. The thin-film amorphous silicon strip sensors provide up to 90% transmittance for red laser light combined with minimum beam distortion and a typical position resolution of 1 #mu#m over a sensitive area of several square centimeters. (orig.)Available from TIB Hannover: RA 2316(2000-12) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman