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After the discovery of the Higgs boson at the LHC, particle physics communityis exploring and proposing next accelerators, to address the remaining openquestions on the underlying mechanisms and constituents of the presentuniverse. One of the studied possibilities is FCC (Future Circular Collider), a100 km long collider at CERN. The feasibility study of this future proposedaccelerator implies the definition of tolerances on magnets imperfections andof the strategies of correction in order to guarantee the target performancesof the High Energy Booster ring. The efficiency of the correction scheme, usedto control the orbit, directly bounds the corrector needs and magnettolerances. Analytic formulae give a first estimation of the average rms valueof the required linear correctors' strengths and of the allowed magnetsmisalignments and field quality along the entire ring. The distribution of thecorrectors along the ring is simulated in order to verify the quality of theresidual orbit after the proposed correction strategy and compared with theanalytical predictions. First specifications of the orbit correctors strengthand tolerances for the alignment of the main elements of the ring arepresented. The limits of the studied correction scheme and method are alsodiscussed.

Definition of tolerances and corrector strengths for the orbit control of the High-Energy Booster ring of the future electro-positron collider