Abstract
Experimental study of beam profile dynamics at circular accelerator was carried out due to creation of the sources of synchrotron radiation and colliders, at which the beam consists of several tens or hundreds of bunches distributed over the separatrices. Dynamics of a longitudinal profile of separate bunches was studied by means of streak cameras, however, they are not applied for regular, permanent diagnostics unlike beam position monitors or CCD cameras Streak cameras are very good for study of single processes, not for routine accelerator performance. BINP SB RAS has developed the optical analyzer on the basis of LI-602 dissector which was used for studying the beam dynamics at VEPP-2, VEPP-3, VEPP-4, electron-positron colliders and other electron circular accelerators: Siberia-2, ESRF, etc The dissector provides permanent measurements of the longitudinal beam profile. Nevertheless, the ultimate temporal resolution of the device is about 20 picoseconds Now it is not enough for application at modern accelerators. In this paper we describe the first experimental results obtained with the dissector of the next generation. The measured technical resolution of this device is about 2 picoseconds, but we believe that this value can be improved.
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