OPTICAL DESIGN FOR BIPM IMAGING SYSTEM

The light imaging system for the Beam Ionization Profile Monitor (BIPM) was designed to allow simultaneous operation of a fast Multi Anode Photo Multiplier and two new types of intensified standard resolution CCD cameras. The main reason for designing the optics was the poor resolution of the preliminary setup limiting seriously the detectors performance and the need of a second optical path for the Multi (32) Anode Photo Multiplier (MAPMT). An increase of the optical luminosity was also necessary for low intensity beams. Optimization of the optical system was done in the ZEMAX program. The imaging error was checked by comparing the ionization profile monitor continuous measurements with wire scanner measurements.