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

Alice Collaboration

doi:10.1016/j.cpc.2019.04.011

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

Alice Collaboration

Experimental Particle Physics

4 Citations (Scopus)

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.

Original language	English
Journal	Computer Physics Communications
Volume	242
Pages (from-to)	25-48
ISSN	0010-4655
DOIs	https://doi.org/10.1016/j.cpc.2019.04.011
Publication status	Published - Sept 2019

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@article{fe0cd925bfcd4edd92b06d6cb279d97a,

title = "Real-time data processing in the ALICE High Level Trigger at the LHC",

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.",

author = "S. Acharya and F. Torals-Acosta and D. Adamova and S Adhya and A. Adler and J Adolfsson and MM. Aggarwal and G.A. Rinella and A. Agnello and Z. Ahammed and Shafqat Ahmad and S.U. Ahn and S. Aiola and A. Akindinov and M. Al-Turany and SN Alam and DSD Albuquerque and D. Aleksandrov and B Alessandro and H.M. Alfanda and Molina, {Rafael A.} and B. Ali and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and Ian Bearden and Bourjau, {Christian Alexander} and Katarina Gajdosova and Gaardh{\o}je, {Jens J{\o}rgen} and bsm989 bsm989 and You Zhou and Vytautas Vislavicius and Vojtech Pacik and Freja Thoresen and Nielsen, {B{\o}rge Svane} and rtc312 rtc312 and {Alice Collaboration}",

year = "2019",

month = sep,

doi = "10.1016/j.cpc.2019.04.011",

language = "English",

volume = "242",

pages = "25--48",

journal = "Computer Physics Communications",

issn = "0010-4655",

publisher = "Elsevier",

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TY - JOUR

T1 - Real-time data processing in the ALICE High Level Trigger at the LHC

AU - Acharya, S.

AU - Torals-Acosta, F.

AU - Adamova, D.

AU - Adhya, S

AU - Adler, A.

AU - Adolfsson, J

AU - Aggarwal, MM.

AU - Rinella, G.A.

AU - Agnello, A.

AU - Ahammed, Z.

AU - Ahmad, Shafqat

AU - Ahn, S.U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, SN

AU - Albuquerque, DSD

AU - Aleksandrov, D.

AU - Alessandro, B

AU - Alfanda, H.M.

AU - Molina, Rafael A.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Bearden, Ian

AU - Bourjau, Christian Alexander

AU - Gajdosova, Katarina

AU - Gaardhøje, Jens Jørgen

AU - bsm989, bsm989

AU - Zhou, You

AU - Vislavicius, Vytautas

AU - Pacik, Vojtech

AU - Thoresen, Freja

AU - Nielsen, Børge Svane

AU - rtc312, rtc312

AU - Alice Collaboration

PY - 2019/9

Y1 - 2019/9

N2 - 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.

AB - 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.

U2 - 10.1016/j.cpc.2019.04.011

DO - 10.1016/j.cpc.2019.04.011

M3 - Journal article

SN - 0010-4655

VL - 242

SP - 25

EP - 48

JO - Computer Physics Communications

JF - Computer Physics Communications

ER -

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

Abstract

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