Optical Filter Transmittance Measurements by a Double-Beam Spectrophotometer for Calibration of Fluorescence Detector AUGER Filter Samples
نویسندگان
چکیده
An experimental setup and procedure for accurate transmittance measurements of candidate filters for the Auger Fluorescence Detector is presented. For this check, we used the Hitachi U-2000 double-beam spectrophotometer (Sph) of the Chemical Department of the University of Athens (UoA). After the calibration of the Sph, we are able to observe transmittance deviations over the area of the filter under study within a sensitivity better than 0.2%. A set of candidate filters is measured to identify their spectral transmittance in response to different angles of incidence. Also, the use of the Sph for few layers developmental multilayer can be studied for their spectral transmittance.
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