Experiments expectations, plans and constraints

The paper discusses the input from the experiments that is relevant to define the program for 2012. It covers the target for integrated luminosity, for both p-p and Heavy Ion physics, the configuration for the Heavy Ion period (p-Pb, Pb-Pb or both) and the requests for special runs (high beta, VdM scan with un-squeezed beam, high or low pile-up runs ...). The impact of LHC parameters and conditions on the experiments is also discussed, including the effect of pile-up (would experiment performance be limited next year with 50 ns?), beam energy, bunch length, vacuum and background, etc.. Proposals for optimizations will also be discussed, including the use of satellite-main collision to provide luminosity for ALICE and suggestions for reducing the overhead of ALICE and LHCb polarity reversals.