The TICL reconstruction at the CMS Phase-2 High Granularity Calorimeter Endcap

Journal of Physics Conference Series, vol. 3206, pp. 012116

Abstract

Abstract To sustain the harsher conditions of the high-luminosity LHC [1], the CMS Collaboration [2] is designing a novel endcap calorimeter. The new calorimeter will predominantly use silicon sensors to achieve sufficient radiation tolerance and will maintain highly granular information in the readout to help mitigate the effects of the pileup. In regions characterized by lower radiation levels, small scintillator tiles with individual SiPM on-tile readout are employed. A unique reconstruction framework (TICL: The Iterative CLustering) is being developed within the CMS Software CMSSW to fully exploit the granularity and other significant detector features and precision timing, with a view to mitigating pile up in the very dense environment of HL-LHC. The TICL framework was specifically designed with heterogeneous computing in mind, with algorithms and data structures optimized for execution on GPUs. Additionally, the framework includes geometry-agnostic data structures that enable efficient navigation and searching. The framework is composed of several key components, including seeding capabilities that leverage information from other detectors, dynamic cluster masking, energy calibration, and particle identification. To maximize flexibility, TICL allows for the iterative chaining of different combinations of modules.

Authors 10

1. Florian Beaudette

   Laboratoire Leprince-Ringuet

   Affiliation as printed

   Leprince Ringuet Laboratory, Paris,

2. Shamik Ghosh

   Laboratoire Leprince-Ringuet

   Affiliation as printed

   Leprince Ringuet Laboratory, Paris,

3. Benedikt Mayer

   European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin,

4. Abhirikshma Nandi Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University

5. Felice Pantaleo

   European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin,

6. W. Redjeb corresponding Aachen

   RWTH Aachen University · European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin,

   RWTH Aachen University

7. Marco Rovere

   European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin,

8. Alice Savona

   École Polytechnique Fédérale de Lausanne

   Affiliation as printed

   École Polytechnique Fédérale de Lausanne, Lausanne,

9. Alexander Schmidt Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University

10. Alessandro Tarabini

    Laboratoire Leprince-Ringuet

    Affiliation as printed

    Leprince Ringuet Laboratory, Paris,