Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)

The ALICE High Level Trigger has to process data online, in order to select interesting (sub)events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber (TPC), we present two pattern recognition methods under investigation: a sequenti...

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Detalles Bibliográficos
Autores principales: Lindenstruth, V., Loizides, C., Rohrich, D., Skaali, B., Steinbeck, T., Stock, R., Tilsner, H., Ullaland, K., Vestbo, A., Vik, T.
Lenguaje:eng
Publicado: 2003
Materias:
Other Fields of Physics
Acceso en línea:https://dx.doi.org/10.1109/TNS.2004.829384
http://cds.cern.ch/record/676448
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author Lindenstruth, V.
Loizides, C.
Rohrich, D.
Skaali, B.
Steinbeck, T.
Stock, R.
Tilsner, H.
Ullaland, K.
Vestbo, A.
Vik, T.
author_facet Lindenstruth, V.
Loizides, C.
Rohrich, D.
Skaali, B.
Steinbeck, T.
Stock, R.
Tilsner, H.
Ullaland, K.
Vestbo, A.
Vik, T.
author_sort Lindenstruth, V.
collection CERN
description The ALICE High Level Trigger has to process data online, in order to select interesting (sub)events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber (TPC), we present two pattern recognition methods under investigation: a sequential approach (cluster finder and track follower) and an iterative approach (track candidate finder and cluster deconvoluter). We show, that the former is suited for pp and low multiplicity PbPb collisions, whereas the latter might be applicable for high multiplicity PbPb collisions of dN/dy>3000. Based on the developed tracking schemes we show that using modeling techniques a compression factor of around 10 might be achievable.
id cern-676448
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
record_format invenio
spelling cern-6764482023-03-14T20:28:15Zdoi:10.1109/TNS.2004.829384http://cds.cern.ch/record/676448engLindenstruth, V.Loizides, C.Rohrich, D.Skaali, B.Steinbeck, T.Stock, R.Tilsner, H.Ullaland, K.Vestbo, A.Vik, T.Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)Other Fields of PhysicsThe ALICE High Level Trigger has to process data online, in order to select interesting (sub)events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber (TPC), we present two pattern recognition methods under investigation: a sequential approach (cluster finder and track follower) and an iterative approach (track candidate finder and cluster deconvoluter). We show, that the former is suited for pp and low multiplicity PbPb collisions, whereas the latter might be applicable for high multiplicity PbPb collisions of dN/dy>3000. Based on the developed tracking schemes we show that using modeling techniques a compression factor of around 10 might be achievable.The ALICE High Level Trigger has to process data online, in order to select interesting (sub)events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber (TPC), we present two pattern recognition methods under investigation: a sequential approach (cluster finder and track follower) and an iterative approach (track candidate finder and cluster deconvoluter). We show, that the former is suited for pp and low multiplicity PbPb collisions, whereas the latter might be applicable for high multiplicity PbPb collisions of dN/dy>3000. Based on the developed tracking schemes we show that using modeling techniques a compression factor of around 10 might be achievable.physics/0310052oai:cds.cern.ch:6764482003-10-13
spellingShingle Other Fields of Physics
Lindenstruth, V.
Loizides, C.
Rohrich, D.
Skaali, B.
Steinbeck, T.
Stock, R.
Tilsner, H.
Ullaland, K.
Vestbo, A.
Vik, T.
Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)
title Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)
title_full Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)
title_fullStr Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)
title_full_unstemmed Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)
title_short Online Pattern Recognition for the ALICE High Level Trigger (tracking and compression techniques)
title_sort online pattern recognition for the alice high level trigger (tracking and compression techniques)
topic Other Fields of Physics
url https://dx.doi.org/10.1109/TNS.2004.829384
http://cds.cern.ch/record/676448
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