High level trigger online calibration framework in ALICE
نویسندگان
چکیده
منابع مشابه
The ALICE High-Level Trigger
The ALICE experiment at the LHC is dedicated to the investigation of reactions between ultra relativistic heavy ions. With an expected event rate of about 200 Hz in Pb-Pb collisions the data rate of the TPC alone is approximately 15 Gbyte/s, in contrast with a maximum affordable rate to the permanent storage system of 1.25 Gbyte/s. Therefore, a high-level trigger is needed which allows for the ...
متن کاملHigh Level Trigger Using ALICE ITS Detector
The high PT trigger capabilities of the ALICE inner tracking system (ITS) as a standalone detector have been investigated. Since the high PT charged particles mostly lead to the linear trajectories within this ITS sector, it is possible to select tracks of PT of the order of 2 GeV and above by confining to a narrow search window in the (θ, φ) space. Also shown that by performing a principal com...
متن کاملImplementation of the ALICE TRD into the High-Level-Trigger
The ALICE High Level Trigger is a high performance computer cluster which provides the possibility of an online analysis of detector data from the ALICE experiment at the CERN LHC. With this online analysis it is possible to distinguish rare and interesting physics scenarios from frequently occurring and well known events. It also enables the various subdetector systems to perform online calibr...
متن کاملALICE High-Level Trigger: Implementation of TRD-specific components
In order to allow on-line data analysis, calibration and monitoring of the ALICE Transition Radiation Detector (TRD) a number of TRD-specific High Level Trigger (HLT) processing components have been designed and implemented. The TRD processing chain for HLT follows the analysis defined by the off-line algorithms developed within the ALICE analysis framework Aliroot [1]. In order to run the very...
متن کاملHigh Level Trigger System for the LHC ALICE Experiment
The central detectors of the ALICE experiment at LHC will produce a data size of up to 75 MB=event at an event rate p200 Hz resulting in a data rate of B15 GB=s: Online processing of the data is necessary in order to select interesting (sub)events (‘‘High Level Trigger’’), or to compress data efficiently by modeling techniques. Processing this data requires a massive parallel computing system (...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2008
ISSN: 1742-6596
DOI: 10.1088/1742-6596/119/2/022007