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Open Access item Algorithms for the ROD DSP of the ATLAS hadronic Tile Calorimeter

Authors:Salvachúa, Belén
Abdallah, J.
Castelo, José María
Castillo, Mª Victoria
Cuenca Almenar, Cristóbal
Ferrer, Antonio
Fullana, Esteban
González Millán, Vicente
Higón, Emilio
Munar, Antoni
Poveda, Joaquín
Ruiz Martínez, Arantxa
Sanchis Peris, Enrique
Solans, Carlos
Soret Medel, Jesús
Torres País, José
Valero, Alberto
Valls Ferrer, Juan Antonio
Keywords:Detector 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 Date:12-Feb-2007
Publisher:Institute of Physics Publishing
Citation:Journal of Instrumentation 2: T02001 (2007)
Abstract:In 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.
Description:10 pages, 10 figures.-- ISI Article Identifier: 000253651100003.
Final full-text version available at: http://ific.uv.es/tical/doc/2007_02_12_JINST_2_T02001.pdf
Publisher version (URL):http://dx.doi.org/10.1088/1748-0221/2/02/T02001
Appears in Collections:(IFIC) Artículos

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