Meshkov, O.I. Anchugov, O. Dorokhov, V.L. Gornostaev, P.B. Kurkin, G.Y. Petrozhitskii, A.V. Schelev, M.Ya. Shashkov, E.V. Shvedov, D.A. Smirnov, A. V. Zarovskii, A.I. Zinin, E.I. JACoW Geneva, Switzerland 978-3-95450-177-9 10.18429/JACoW-IBIC2016-MOPG60 English 206-209 MOPG60 electron laser operation radiation synchrotron Contribution to a conference proceedings 2017 2017-02 http://dx.doi.org/10.18429/JACoW-IBIC2016-MOPG60 http://jacow.org/ibic2016/papers/mopg60.pdf A dissector is an electron-optical device designed for measurement of periodic light pulses of subnanosecond and picosecond duration. LI-602 dissector developed at BINP SB RAS is widely used for routine measurements of a longitudinal profile of electron and positron beams at BINP electron-positron colliders and other similar installations. LI-602 dissector is a part of many optical diagnostic systems and provides temporal resolution of about 20 ps. Recently a new generation of picosecond dissectors were created on the basis of the PIF-01/S1 picosecond streak-image tube designed and manufactured at the GPI Photoelectronics Department. The results of the measurements of instrument function of the new dissector based on PIF-01/S1, which were carried out in the static mode, showed that temporal resolution of the dissector can be better than 3-4 ps (FWHM). The results of temporal resolution calibration of the new-generation picosecond dissector, carried out at the specialized set-up based on a femtosecond Ti:sapphire laser, and recent results of longitudinal beam profile measurements at BINP accelerators are given in this work.