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Algorithms for the ROD DSP of the ATLAS hadronic Tile Calorimeter

AuthorsSalvachúa, Belén CSIC; Abdallah, J.; Castelo, José María; Castillo, Mª Victoria CSIC ORCID; Cuenca Almenar, Cristóbal CSIC; Ferrer, Antonio CSIC ORCID; Fullana, Esteban CSIC ORCID; González Millán, Vicente; Higón, Emilio CSIC ORCID; Munar, Antoni; Poveda, Joaquín CSIC ORCID; Ruiz Martínez, Arantxa CSIC ORCID; Sanchís Peris, Enrique; Solans, Carlos CSIC; Soret Medel, Jesús; Torres País, José; Valero, Alberto CSIC ORCID; Valls Ferrer, Juan Antonio CSIC ORCID
KeywordsDetector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases)
Data processing methods
Digital signal processing (DSP)
Analysis and statistical methods
Issue Date12-Feb-2007
PublisherInstitute of Physics Publishing
CitationJournal of Instrumentation 2: T02001 (2007)
AbstractIn this paper we present the performance of two algorithms currently running in the Tile Calorimeter Read-Out Driver boards for the commissioning of ATLAS. The first algorithm presented is the so called Optimal Filtering. It reconstructs the deposited energy in the Tile Calorimeter and the arrival time of the data. The second algorithm is the MTag which tags low transverse momentum muons that may escape the ATLAS muon spectrometer first level trigger.
Comparisons between online (inside the Read-Out Drivers) and offline implementations are done with an agreement around 99% for the reconstruction of the amplitude using the Optimal Filtering algorithm and a coincidende of 93% between the offline and online tagged muons for the MTag algorithm. The processing time is measured for both algorithms running together with a resulting time of 59.2 μs which, although above the 10 μs of the first level trigger, it fulfills the requirements of the commissioning trigger (~ 1 Hz). We expect further optimizations of the algorithms which will reduce their processing time below 10 μs.
Description10 pages, 10 figures.-- ISI Article Identifier: 000253651100003.
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