Lossless compression of raw data for the ATLAS experiment at CERN


ATLAS is one of the particle physics experiments at the Large Hadron Collider (LHC) at CERN. With the planned upgrade of the LHC (the so called High Luminosity phase), allowing for even more detailed exploration of fundamental particles and forces of nature, it is expected that recorded data rate will be even ten times greater than today. Therefore, the storage requirements of the experiment will be much higher, crossing the threshold of one exabyte of tape storage (already compressed). One of the methods of addressing this challenge is to improve the compression methods, as even a small enhancement of the compression ratio may have a significant impact.

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