So the reaction force over the curved part of the accelerator will be equivalent to 26 tonnes of force.
And the most incredible is that this force is created in interaction with 6·1014 protons with a rest mass of only 1 ng (one nanogram!).
An other more impresive force acts over the bam pipe because the superconductive currents. which is explained in Section Magnetism II.
The designers have taken these forcee into account because very high precision is required.