Beam backgrounds at SuperKEKB

We will review the study and mitigation of beam-induced backgrounds at the SuperKEKB electron-positron collider, which serves the Belle II experiment in Tsukuba, Japan. The experiment seeks New Physics beyond the Standard Model, which requires high beam currents and a luminosity of order 10³⁵ cm^-2s^-1. Currently, the backgrounds are not limiting the beam currents, and the machine has achieved a world record luminosity of about 3.6 x 10³⁴ cm^-2s^-1. This success required a good understanding of the beam loss mechanisms in the machine, comprehensive background monitoring, targeted mitigation, machine tuning and simulation. We will discuss computational and experimental techniques used for studying and mitigating the backgrounds, the current background status in Belle II, and our expectations for the challenges ahead on the road towards even higher luminosities.