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ATLAS has developed a topological noise suppression algorithm (similar to techniques used in the D0 and H1 experiments), based on energy thresholds. This technique is very effective in the current ATLAS simulation, but requires a precise knowledge of the noise distribution (mean and shape), cell-by-cell, which will be extremely challenging with the varying detector conditions expected at the LHC. An example of cells left after topological noise suppression is shown in the next figure:
This project consist of the development and implementation of an alternative noise suppression technique based on energy-density rather than absolute energy to select calorimeter cells. This is a novel idea, proposed originally for the D0 experiment, but has never been studied before.