Towards the optimal LHC interaction region: beam-induced energy deposition

The overall machine and detector performances at the LHC are strongly dependent on the interaction region (IR) scheme and details. Beam-induced energy deposition in the components of the complex due to both p-p collisions and beam loss in the IR vicinity is a significant challenge for the design of the high luminosity insertions. It was shown in our previous studies that a set of collimators in the machine and absorbers within the low-beta quadrupoles would reduce both the peak power density and total heat load to tolerable levels with a reasonable safety margin. New optical configurations for the IRs developed in the past year may require changes in the absorber dimensions. In this paper we present studies of the radial and azimuthal distributions of the deposited power density and the dependence of peak power density on absorber thickness. These can be used to guide further studies of the optics and absorber systems