Delphes meets AFTER & LHCb

Salle des conseils (IPN Orsay)

Salle des conseils

IPN Orsay

Jean-Philippe Lansberg (IPNO - Paris-Sud U. - CNRS/IN2P3)
Delphes seminar at 10 am by P. Denim & M. Selvaggi (Delphes collab, CP3, UCLouvain). Hands-on and discussion on a DELPHES set-up for LHCb and for AFTER@LHC in the afternoon.

AFTER@LHC is a proposed fixed-target experiment using the LHC beams. For its design studies, modern simulations tools are needed.

"Delphes is a C++ framework, performing a fast multipurpose detector response simulation. The simulation includes a tracking system, embedded into a magnetic field, calorimeters and a muon system. The framework is interfaced to standard file formats (e.g. Les Houches Event File or HepMC) and outputs observables such as isolated leptons, missing transverse energy and collection of jets which can be used for dedicated analyses. The simulation of the detector response takes into account the effect of magnetic field, the granularity of the calorimeters and subdetector resolutions. Visualisation of the final state particles is also built-in using the corresponding ROOT library. " (see )
    • 10:00 11:00
      Delphes seminar: DELPHES 3, A modular framework for fast simulation of a generic collider experiment 1h
      DELPHES 3, A modular framework for fast simulation of a generic collider experiment The version 3.0 of the DELPHES fast-simulation is presented. The goal of DELPHES is to allow the simulation of a multipurpose detector for phenomenological studies. The simulation includes a track propagation system embedded in a magnetic field, electromagnetic and hadron calorimeters, and a muon identification system. Physics objects that can be used for data analysis are then reconstructed from the simulated detector response. These include tracks and calorimeter deposits and high level objects such as isolated electrons, jets, taus, and missing energy. The new modular approach allows for greater flexibility in the design of the simulation and reconstruction sequence. New features such as the particle-flow reconstruction approach, crucial in the first years of the LHC, and pile-up simulation and mitigation, which is needed for the simulation of the LHC detectors in the near future, have also been implemented. The DELPHES framework is not meant to be used for advanced detector studies, for which more accurate tools are needed. Although some aspects of DELPHES are hadron collider specific, it is flexible enough to be adapted to the needs of electron-positron collider experiments.
      Speaker: Pavel Demin (CP3, UCLouvain)
    • 11:00 12:00
    • 12:00 13:30
      Lunch 1h 30m
    • 13:30 15:00
      Delphes Hands-on 1h 30m
    • 15:00 15:30
      Coffee 30m
    • 15:30 17:30
      Discussion on a Delphes set-up for LHCb and for AFTER@LHC 2h