SFT

G4HepEm: accelerated electromagnetic shower simulation for the HL–LHC

When the High–Luminosity LHC (HL–LHC) starts delivering data, the volume of simulated events required to control systematic uncertainties will rise sharply. In ATLAS, detailed detector simulation already consumes a large fraction of the computing…

CLUE: A Scalable Clustering Algorithm for the Data Challenges of Tomorrow

The foreseen increase in luminosity and pileup at the High-Luminosity Large Hadron Collider (HL-LHC) [1] will challenge both the detector hardware and the reconstruction software. With higher pile-up, calorimeter energy reconstruction depends even…

RNTuple: The New Columnar Storage for HEP Data

R&D activities are vital for the ROOT project. A few years ago, we started investigating the evolution of TTree, ROOT’s columnar format with which more than two exabytes of data were written at the LHC: experiments write data, lots of it, to…

Unveiling the Power of Software in Science: Inside the EVERSE Network

Researchers across all sciences use different types of tools: benches, centrifuges, lasers, weather balloons, seismographs, telescopes… you name it. At CERN, such a “hardware tool” is the LHC, together with all our other accelerator facilities,…

The Future of HEP Computing Considered

We are well-used to long lead times in particle physics. Detectors that are commissioned often rely on technology that was in an R&D phase decades before and now, as the CERN community, we now plan for new accelerators that will still be…

Update on CernVM-FS

Fig. 1: Map of CVMFS cache instances. The tiered cache model is one of the techniques that helps to efficiently deploy software on /cvmfs to computing sites all over the world. Anyone who has ever used experimental software on CERN's computing…

Distributed Analysis with ROOT RDataFrame

The HL-LHC is foreseen to generate roughly thirty times more data than the LHC has produced so far. Given the available future budget estimations and expected technological evolution [1], software will play a crucial role to cover the performance…

Geant4: a modern and versatile toolkit for detector simulations

Like a good, lifelong friend who is accompanying you through all phases of life, the Geant4 detector simulation toolkit is widely used in particle physics experiments from their conception to their design, during construction and data taking, for…

The FELIX Project

If you are working on one of the ATLAS, DUNE or NA62 experiments you have surely participated to meetings in which people referred to “FELIX”, as if it were a widely-known brand. You probably guessed, after some time, that they were not referring to…

Data handling and processing for the FCC-ee

Data handling and processing for the FCC-ee Introduction The integrated Future Circular Collider study will bring about giant steps forward in many technical and engineering fields. The operation at the Z-pole of the FCC-ee machine will deliver the…

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