Letter of Intent: Development of Pileup Mitigation Tools within the Context of a Dual Readout Calorimeter (DRC) for CMS

The general motivation for the proposed work is given in a longer document [1]. • Our primary focus will be to address issues related to the severe pileup conditions expected for HL-LHC. • In addition, we will address questions regarding suitability of DRC to HL-LHC, such as radiation hardness of components and the placement of photosensors in a CMS FCAL design. We expect to work closely with our collaborators on one [2] or both concurrent DRC related proposals, dividing responsibility according to our primary goals.