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TY - UNPB AU - Piminov, P.A. ED - Kuzin, Maksim ED - Schaa, Volker RW TI - Start VEPP-4M Facility Operation at High Energy J2 - Proc. of RuPAC2018, Protvino, Russia, 1-5 October 2018 C1 - Protvino, Russia T2 - Russian Particle Accelerator Conference T3 - 26 LA - english AB - The electron positron collider VEPP-4M finished low energy luminosity run (up to 1.9 GeV). New experimental stage will be performed with the beam acceleration in VEPP-4M. The experiment of the adron cross section measure in 17 points from 2.5 to 3.5 GeV beam energy was started in December 2017. One of two scans of the experiment (8 points) is made. Next experiments are the collecting data at maximal beam energy for gamma-gamma physics and Y-mesons study. The first luminosity at Y(1S) meson (~4.75 GeV) is obtained. For maximal luminosity at high energy the new electron positron injector is used. To obtain maximal beam energy of 5.2 GeV upgrade of RF system and power supply system of VEPP-4M is performing. The laser polarimeter is used to measure the beam energy with resonance depolarization at high energy of VEPP-4M. Synchrotron radiation experiments in hard X-ray mode are performed at 4.5 GeV with new hybrid 2 T wiggler. PB - JACoW CP - Geneva, Switzerland ER -