This work package will evaluate the inherent constraints on beampipe design for various options for the high luminosity insertions at HL-LHC. It will take into account physics requirements at the interaction point and in the forward region along with LHC machine constraints. In close collaboration with the experiments and other High Luminosity work packages, mechanical, electromagnetic and vacuum calculations will be performed to verify the viability of various design options.
In collaboration with HSE-RP it will evaluate via simulations the fluence, dose rate, integrated dose and activation to be expected in the forward shielding region of the experimental caverns, for the principal HL-LHC design options being considered and for various shielding configurations. The backgrounds and particle fluences induced in triggering, monitoring and physics detectors for various modes of HL-LHC operation will also be evaluated, taking into account both routine operation and various pathological conditions.
WP8 covers the study of possible shielding configurations compatible with HL-LHC operation based upon radiation calculations, taking into account the radiation tolerance of equipment and the calculated magnetic fields and forces.
In collaboration with BE-BI, instrumentation suitable for the monitoring of beam conditions in the experiments at HL-LHC, including instantaneous backgrounds, fluences, dose-rates and luminosity, along with integrated doses and integrated luminosity will be designed and prototyped.
The work package will be in charge of the deinstallation of the TAS and TAN absorbers, the design, manufacturing and installation of the Secondary and Neutral absorbers in the LHC machine, and the optimization of the machine-interface regions. This includes the integration studies performed together with other work packages, teams from vacuum groups, experiments and the machine, and the reporting to the correspondent HL-LHC and machine working groups.