Novosibirsk Free Electron Laser (NovoFEL) is based on rather complicated accelerator system. Complex uses three separate FELs installed on various Energy Recovery Linacs (ERLs). ERLs operate with high average beam current (about 5 mA). The severe restrictions on the electron bunch parameters for the lasing require the beam diagnostic system. The transverse beam profile measurement system uses an electron beam synchrotron radiation (SR) from the bending magnet and the optical transition radiation (OTR) from the aluminum foil. This allows adjusting the beam parameters before the undulator and measuring them after lasing. This year, the diagnostic complex has been improved by the installation of additional SR monitor at the place with a large dispersion function and spectrometer for studying the undulator radiation. The recent results of the beam dynamics measurements and calculations are presented.
This work was supported by grant 18-72-00123 of Russian Science Foundation.