At the Large Hadron Collider at CERN in Geneva, Switzerland, atomic nuclei are collided at ultra-relativistic energies. Many final-state particles are produced in each collision and their properties are measured by the ALICE detector. The detector signals induced by the produced particles are digitized leading to data rates that are in excess of 48 GB/s. The ALICE High Level Trigger (HLT) system pioneered the use of FPGA- and GPU-based algorithms to reconstruct charged-particle trajectories and reduce the data size in real time. The results of the reconstruction of the collision events, available online, are used for high level data quality and detector-performance monitoring and real-time time-dependent detector calibration. The online data compression techniques developed and used in the ALICE HLT have more than quadrupled the amount of data that can be stored for offline event processing.

Real-time data processing in the ALICE High Level Trigger at the LHC / Acharya, S; Adamova, D.; Adolfson, J; Aggarwal, M.; Rinella, G.; Agnello, M.; Agrawal, N; Bufalino, S.; Catalano, F.; Concas, M.; Grosa, F.; Fecchio, P.; Ravasenga, I. - In: COMPUTER PHYSICS COMMUNICATIONS. - ISSN 0010-4655. - STAMPA. - 242:(2019), pp. 25-48. [10.1016/j.cpc.2019.04.011]

Real-time data processing in the ALICE High Level Trigger at the LHC

Agnello, M.;Bufalino, S.;Catalano, F.;Concas, M.;Grosa, F.;Fecchio, P.;Ravasenga, I
2019

Abstract

At the Large Hadron Collider at CERN in Geneva, Switzerland, atomic nuclei are collided at ultra-relativistic energies. Many final-state particles are produced in each collision and their properties are measured by the ALICE detector. The detector signals induced by the produced particles are digitized leading to data rates that are in excess of 48 GB/s. The ALICE High Level Trigger (HLT) system pioneered the use of FPGA- and GPU-based algorithms to reconstruct charged-particle trajectories and reduce the data size in real time. The results of the reconstruction of the collision events, available online, are used for high level data quality and detector-performance monitoring and real-time time-dependent detector calibration. The online data compression techniques developed and used in the ALICE HLT have more than quadrupled the amount of data that can be stored for offline event processing.
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0010465519301250-main.pdf

non disponibili

Descrizione: Real-time data processing in the ALICE High Level Trigger at the LHC
Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 2.54 MB
Formato Adobe PDF
2.54 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
1812.08036.pdf

accesso aperto

Descrizione: Real-time data processing in the ALICE High Level Trigger at the LHC - arxiv
Tipologia: 1. Preprint / submitted version [pre- review]
Licenza: Creative commons
Dimensione 8.54 MB
Formato Adobe PDF
8.54 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2848045