Advanced European Infrastructures for Detectors at Accelerators Conference Contribution Fractal dimension analysis in a highly granular calorimeter
نویسنده
چکیده
The concept of “particle flow” has been developed to optimise the jet energy resolution by distinguishing the different jet components. A highly granular calorimeter designed for the particle flow algorithm provides an unprecedented level of detail for the reconstruction of calorimeter showers and enables new approaches to shower analysis. In this paper the measurement and use of the fractal dimension of showers is described. The fractal dimension is a characteristic number that measures the global compactness of the shower. It is highly dependent on the primary particle type and energy. Its application in identifying particles and estimating their energy is described in the context of a calorimeter designed for the International Linear Collider.
منابع مشابه
Advanced European Infrastructures for Detectors at Accelerators Conference Contribution Shower fractal dimension analysis in a highly-granular calorimeter
We report on an investigation of the self-similar structure of particle showers recorded at a highly-granular calorimeter. On both simulated and experimental data, a strong correlation between the number of hits and the spatial scale of the readout channels is observed, from which we define the shower fractal dimension. The measured fractal dimension turns out to be strongly dependent on partic...
متن کاملFractal dimension of particle showers measured in a highly granular calorimeter.
We explore the fractal nature of particle showers using Monte Carlo simulation. We define the fractal dimension of showers measured in a high granularity calorimeter designed for a future lepton collider. The shower fractal dimension reveals detailed information of the spatial configuration of the shower. It is found to be characteristic of the type of interaction and highly sensitive to the na...
متن کاملAdvanced European Infrastructures for Detectors at Accelerators Conference Contribution Prototypes for components of a control system for the ATLAS pixel detector at the HL-LHC
In the years around 2020 an upgrade of the LHC to the HL-LHC is scheduled, which will increase the accelerators luminosity by a factor of 10. In the context of this upgrade, the inner detector of the ATLAS experiment will be replaced entirely including the pixel detector. This new pixel detector requires a specific control system which complies with the strict requirements in terms of radiation...
متن کاملAdvanced European Infrastructures for Detectors at Accelerators Conference Contribution Radiationhard components for the control system of a future ATLAS pixel detector
The upgrade of the ATLAS experiment for the High Luminosity LHC (HL-LHC) will include a new pixel detector. A completely new detector control system (DCS) for this pixel detector will be required in order to cope with the substantial increase in radiation at the HL-LHC. The DCS has to have a very high reliability and all components installed within the detector volume have to be radiationhard. ...
متن کاملAIDA Advanced European Infrastructures for Detectors at Accelerators Conference Contribution A neural network z - vertex trigger for Belle II
We present the concept of a track trigger for the Belle II experiment, based on a neural network approach, that is able to reconstruct the z (longitudinal) position of the event vertex within the latency of the first level trigger. The trigger will thus be able to suppress a large fraction of the dominating background from events outside of the interaction region. The trigger uses the drift tim...
متن کامل