  In 2017, ATLAS has been equipped with a new, dedicated detector system
allowing measurements of forward protons scattered at small angles in
diffractive and electromagnetic processes. These ATLAS Forward Proton detectors
(AFP) can operate during the standard high-luminosity LHC runs and collect
large amounts of integrated luminosity. This gives a possibility to study rare
interactions, in particular, the two-photon processes. The physics programme
includes measurements of photon-photon interactions present in the Standard
Model, as well as using searches for new physics. In this paper, the AFP
detectors and physics goals are briefly presented.
