Polozov, S.M. Dyubkov, V.S. Panishev, A.S. Shatokhin, V.L. JACoW Publishing Geneva, Switzerland 2673-5539 978-3-95450-240-0 10.18429/JACoW-RuPAC2021-WEPSC08 English 358-360 radiation vacuum storage-ring synchrotron synchrotron-radiation Contribution to a conference proceedings 2021 2021-10 https://doi.org/10.18429/JACoW-RuPAC2021-WEPSC08 https://jacow.org/rupac2021/papers/wepsc08.pdf Analysis of gas loads for the vacuum system chambers of the 6GeV synchrotron radiation (SR) source are carried out. The main source of gas loads is the photostimulated desorption induced by SR. The influence of storage ring lattice, geometric dimensions and beam parameters on the vacuum conditions in SR-source prototype chambers is studied. The geometric model of the storage ring chamber designed for simulation is considered. The simulation of the radiation flux parameters generated by the charged particles passing through the section of the vacuum chamber has been performed. The technique of calculating the parameters of SR and photostimulated desorption by means of Synrad+ and Molflow+ codes is applied.