The Linear and Non-Linear Optics section of the ABP Group is in charge of :

• Optics design and development of CERN's circular hadron colliders and accelerators, present and future, including also machine detector interface aspects. 
• Studies the mechanical aperture and magnetic field imperfections of the machines as installed and their impact on beam dynamics.
• Carries out experimental and theoretical beam physics and design studies aimed at improving the performance of CERN's circular hadron colliders and accelerators, present and future, in particular in terms of beam losses management.
• Defines parameters, strategies, and measurement procedures for initial beam commissioning and regular operation in collaboration with other sections and groups.
• Provides coordination and support during both commissioning and routine operation.
• Hosts the project co-ordination and studies for the LHC collimation system and its upgrade.
• Hosts the co-ordination and studies of present and future operation of the LHC for nuclear collisions.
• Is in charge of, develops, and maintains MAD-X and SixTrack, tools for beam physics, accelerator design, and operation, including also tools for volunteer computing.
• Contributes to European-funded networks and studies.
• Provides expertise in advisory bodies for accelerators at other laboratories. 
• Provides expertise for educational and outreach activities.