INFLUENCE OF COOLING WATER FLUX ON THE TEMPERATURE OF THE VACUUM WINDOW COMPONENTS OF NOVOSIBIRSK SYNCHROTRON WIGLER STATIONS

A 3D-modeling of the changes in the temperature field of the most important elements of the wiggler workstation vacuum windows of the Siberian Circular Photon Source SKIF synchrotron was carried out with a decrease in the pressure of cooling water and the window structure water flow rate, up to an emergency stop of the pumping station. It has been established that if the pumps are turned off, the maximum temperature in the diamond foil will rise above 372◦C, which can cause recrystallization of the diamond and rupture of the foil. At the same time, boiling will not occur on the minichannel walls. However, the temperature in the liquid metal will increase by 37◦ . This can significantly increase the diffusion of liquid metal components into the polycrystalline copper flange and diamond foil, which can also lead to rupture of the foil. Recommendations for preventing these accidents are presented.