FLC - Forschung mit Lepton Collidern / Research with Lepton Colliders

Research & Developement for a linear collider detector

Welcome to the pages of the group FLC.
Our main subject of study is the physics of electron-positron collisions at high energies.
We are involved in the ILC project.

Figure 1: Illustration of the ILD proposed for a future linear collider

The International Linear Collider ILC is a planned electron-positron linear collider, which will operate at energies from 91 GeV up to about 500 GeV range (with the possibility to upgrade to 1 TeV). This machine will allow us to explore a new frontier of high energies in electron-positron collisions, complementary to what is planned at the LHC at CERN. The main physics motivation of this machine is the detailed investigation of the mechanism, by which the electroweak symmetry breaking is realised in nature. The as yet undiscovered Higgs particle, the top quark and the electroweak gauge bosons and their interactions play a central role in this. The detector and the physics at the ILC machines are studied by an international workshop chartered by ECFA to study the physics potential of a 500 - 1000 GeV linear accelerator. Within Germany there is the Strategic Helmholtz Alliance Physics at the Terascale, to which we contribute.
More generally understandable information on the ILC machine, physics and detector can be found at Welt der Physik (only in german).

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topics we are currently working on

• Hardware:
  • Developement of a Time Projection Chamber TPC as main tracker for the ILC.
  • Developement of a polarimeter to measure the beam polarisation at the ILC.
  • Developement of an hadronic calorimeter HCAL for the ILC.
  • Testing new silicon-based photodetectors SiPM for HEP detectors
• Software:
  • Developement of track reconstruction for the ILC
  • Developement of calorimeter software for testbeam analysis and simulations
  • Simulations of the ILC detector, using GEANT4
• ILD optimization:
  • Optimizing the detector for the ILC
  • ILC database of simulated files

Students who got curious, and are looking for a diploma or a PhD thesis, or just perform a taster week are always welcome.

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Work of our colleagues at Zeuthen:

• Linear Collider group at Zeuthen
• Polarisation group at Zeuthen
• Forward calorimetry group at Zeuthen

Work of our colleagues from LHC:

• ATLAS group at DESY
• CMS group at DESY

Former work of our group:

• at the OPAL experiment in collaboration with the Institut für Experimentalphysik, Universität Hamburg
• and on CVD diamond properties for the TESLA project

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