Here we study the e-cloud for the "water-bag" distribution for the bunch profile and compare the results with a) realistic bunch profile (current measured profile) 2) HP Analytical 3) Bunches in Double Harmonic RF buckets with V2/V1=-0.5 - bunch lengthening mode for the LHC scenario at 7 TeV. The simulations are carried out using code ECLOUD for an LHC drift section. We find that the heat load is maximum for the currently used bunch profiles and it is about 20% smaller for the water bag distribution or bunches in double harmonic rf buckets.
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