Beam diagnostics for linear accelerator of SKIF synchrotron light source

As the injector of the new fourth-generation SKIF synchrotron light source at the BINP SB RAS (Novosibirsk, Russia), the linear accelerator will provide a 200 MeV electron beam. A precise measurement of the beam is very important for the control of the linac and even the entire light source. A set of diagnostic instruments for tuning the linac and measuring the beam parameters starting from the electron RF gun to the output of accelerator has been designed. The instrumentation should cover the dynamic diagnostic range of 0.6 to 200 MeV and a beam duration from the initial 100 ps to 3 ps at the output of the accelerator. The set includes eight fluorescent screens to measure beam transverse size, two Cherenkov probes and RF-cavity sensors to record beam duration, a dipole magnetic spectrometer to measure energy and energy spread, a Faraday cup (FC) and fast current transformers (FCTs) to measure beam charge current, and beam position monitors (BPMs) to check the beam position. This paper aims to give an overview of the beam instrumentation and briefly describes the design and parameters of each diagnostic system. The results of numerical and dynamics simulations of some of the instruments are briefed. Possible scenarios of linac tuning are discussed.