TY - JOUR
T1 - Real-time data processing in the ALICE High Level Trigger at the LHC
AU - ALICE Collaboration
AU - Bedda, C.
AU - Caffarri, D.
AU - Christakoglou, P.
AU - Grelli, A.
AU - Jaelani, S.
AU - Khabanova, Z.
AU - Kuijer, P.G.
AU - Lodato, D.F.
AU - Margutti, J.
AU - Mischke, A.
AU - Mohanty, A.P.
AU - Nooren, G.J.L.
AU - Peitzmann, T.
AU - Sas, M.H.P.A.
AU - Simatovic, G.
AU - Snellings, R.J.M.
AU - Trzeciak, B.A.
AU - van der Kolk, N.
AU - van Doremalen, L.V.R.
AU - van Leeuwen, M.
AU - Veen, A.M.
AU - Vermunt, L.A.
AU - Yokoyama, H.
AU - Correia Zanoli, H.J.
PY - 2019/9/1
Y1 - 2019/9/1
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 48GB/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 48GB/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.
KW - FPGA
KW - GPU
UR - http://www.scopus.com/inward/record.url?scp=85065619163&partnerID=8YFLogxK
U2 - 10.1016/j.cpc.2019.04.011
DO - 10.1016/j.cpc.2019.04.011
M3 - Article
AN - SCOPUS:85065619163
SN - 0010-4655
VL - 242
SP - 25
EP - 48
JO - Computer Physics Communications
JF - Computer Physics Communications
ER -