Abstract
In future experiments at CERN using the SPS (Super Proton Synchroton), pictures will be obtained from the big bubble chambers, BEBC and Gargamelle. Until now only a few thousands BEBC pictures have been taken in experiments with the existing PS accelerator. BEBC pictures are much more difficult to be analysed by means of automatic devices than the ones from 2 m bubble chamber. Therefore it is necessary to sophisticate the automatic measuring system using an HPD (a mechanical Flying Spot Digitizer) or to develop new systems like, for instance, Erasme recently built at CERN. Through a sophistication of the HPD device, the use of a home-made processor to get track segments and the development of a new program chain, which allows to follow spiralizing tracks, and the use of an interactive refreshing display for help, a new system has been developed and it allows the automatic processing of BEBC pictures.
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