Benchmarks and implementation of the ALICE high level trigger

التفاصيل البيبلوغرافية
العنوان: Benchmarks and implementation of the ALICE high level trigger
المؤلفون: Jean Willy Andre Cleymans, Arne Wiebalck, G. vrebekk, Bernhard Skaali, F. Staley, Matthias Richter, T. Vik, Z. Vilakazi, Artur Krzysztof Szostak, A. Vestbo, H. Tilsner, H. Appelshäuser, T. Alt, Constantin Loizides, S. Bablok, Kjetil Ullaland, Bruce Becker, Haavard Helstrup, R. W. Fearick, Dieter Røhrich, G. de Vaux, Volker Lindenstruth, C. Cicalo, Cvetan Valeriev Cheshkov, T.M. Steinbeck, Sukalyan Chattopadhyay
المصدر: IEEE Transactions on Nuclear Science. 53:854-858
بيانات النشر: Institute of Electrical and Electronics Engineers (IEEE), 2006.
سنة النشر: 2006
مصطلحات موضوعية: Nuclear and High Energy Physics, Computer science, business.industry, Event (computing), Hardware description language, Data flow diagram, Data acquisition, Software, Nuclear Energy and Engineering, Scalability, VHDL, Detectors and Experimental Techniques, Electrical and Electronic Engineering, Field-programmable gate array, business, computer, Computer hardware, computer.programming_language
الوصف: The ALICE High Level Trigger combines and processes the full information from all 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.
تدمد: 0018-9499
DOI: 10.1109/tns.2006.873770
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6531fabd67328c0df379f59ade2ba99f
https://doi.org/10.1109/tns.2006.873770
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....6531fabd67328c0df379f59ade2ba99f
قاعدة البيانات: OpenAIRE
الوصف
تدمد:00189499
DOI:10.1109/tns.2006.873770