Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
energy
Benchmarks and implementation of the ALICE high level trigger
IEEE Transactions on Nuclear Science, Volume 53, No. 3, Article 1644953, Year 2006
Notification
URL copied to clipboard!
Description
The ALICE High Level Trigger combines and processes the full information from an major detectors in a large computer cluster. Data rate reduction is achieved by reducing the event rate by selecting interesting events (software trigger) and by reducing the event size by selecting sub-events and by advanced data compression. Reconstruction chains for the barrel detectors and the forward muon spectrometer have been benchmarked. The HLT receives a replica of the raw data via the standard ALICE DDL link into a custom PCI receiver card (HLT-RORC). These boards also provide a FPGA co-processor for data-intensive tasks of pattern recognition. Some of the pattern recognition algorithms (cluster finder, Hough transformation) have been re-designed in VHDL to be executed in the Virtex-4 FPGA on the HLT-RORC. HLT prototypes were operated during the beam tests of the TPC and TRD detectors. The input and output interfaces to DAQ and the data flow inside of HLT were successfully tested. A full-scale prototype of the dimuon-HLT achieved the expected data flow performance. This system was finally embedded in a GRID-like system of several distributed clusters demonstrating the scalability and fault-tolerance of the HLT. © 2006 IEEE.
Authors & Co-Authors
Alt, Torsten
Germany, Heidelberg
Universität Heidelberg
Appelshäuser, Harald
Germany, Frankfurt am Main
Goethe-universität Frankfurt am Main
Bablok, Sebastian Robert
Norway, Bergen
Universitetet I Bergen
Becker, Bruce R.
South Africa, Cape Town
University of Cape Town
Chattopadhyay, Sukalyan
India, Kolkata
Saha Institute of Nuclear Physics
Cheshkov, Cvetan V.
Switzerland, Geneva
Organisation Européenne Pour la Recherche Nucléaire
Cicalò, Corrado
Italy, Monserrato
Istituto Nazionale Di Fisica Nucleare, Sezione Di Cagliari
Cleymans, Jean Willy Andre
South Africa, Cape Town
University of Cape Town
Fearick, Roger Worsley
South Africa, Cape Town
University of Cape Town
Helstrup, Haavard
Norway, Bergen
Høgskolen I Bergen
Lindenstruth, Volker
Germany, Heidelberg
Universität Heidelberg
Loizides, Constantinos A.
Germany, Frankfurt am Main
Goethe-universität Frankfurt am Main
Richter, Matthias Rudolph
Norway, Bergen
Universitetet I Bergen
Röhrich, Dieter
Norway, Bergen
Universitetet I Bergen
Skaali, Toralf Bernhard
Norway, Oslo
Universitetet I Oslo
Staley, Florent M.
France, Gif-sur-yvette
Cea Saclay
Steinbeck, Timm Morten
Germany, Heidelberg
Universität Heidelberg
Szostak, Artur Krzysztof
South Africa, Cape Town
University of Cape Town
Tilsner, H.
Germany, Heidelberg
Universität Heidelberg
Ullaland, Kjetil
Norway, Bergen
Universitetet I Bergen
de Vaux, Gareth
South Africa, Cape Town
University of Cape Town
Vestbø, Anders Strand
Norway, Bergen
Universitetet I Bergen
Vik, Torstein
Norway, Oslo
Universitetet I Oslo
Vilakazi, Zabulon Z.
South Africa, Cape Town
University of Cape Town
Wiebalck, Arne
Germany, Heidelberg
Universität Heidelberg
Øvrebekk, Gaute
Norway, Bergen
Universitetet I Bergen
Statistics
Citations: 26
Authors: 26
Affiliations: 10
Identifiers
Doi:
10.1109/TNS.2006.873770
ISSN:
00189499