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Oxana Smirnova

Oxana Smirnova

Senior Lecturer, Deputy Head of division

Oxana Smirnova

Double-hit separation and dE/dx resolution of a time projection chamber with GEM readout


  • Y. Aoki
  • L. Jönsson
  • B. Lundberg
  • U. Mjörnmark
  • A. Oskarsson
  • L. Österman
  • O. Smirnova
  • F. Zhang

Summary, in English

A time projection chamber (TPC) with micropattern gaseous detector (MPGD) readout is investigated as main tracking device of the International Large Detector (ILD) concept at the planned International Linear Collider (ILC). A prototype TPC equipped with a triple gas electron multiplier (GEM) readout has been built and operated in an electron test beam. The TPC was placed in a 1 T solenoidal field at the DESY II Test Beam Facility, which provides an electron beam up to 6 GeV/c. The performance of the readout modules, in particular the spatial point resolution, is determined and compared to earlier tests. New studies are presented with first results on the separation of close-by tracks and the capability of the system to measure the specific energy loss dE/dx. This is complemented by a simulation study on the optimization of the readout granularity to improve particle identification by dE/dx. © 2022 The Author(s)


  • Particle and nuclear physics

Publishing year





Journal of Instrumentation





Document type

Journal article


IOP Publishing


  • Accelerator Physics and Instrumentation


  • dE/dx detectors
  • Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)
  • Particle identification methods
  • Particle tracking detectors (Gaseous detectors)
  • Time projection chambers
  • Electron multipliers
  • Gas detectors
  • Gases
  • Germanium alloys
  • De/dx detector
  • Gas electron multipliers
  • Gaseous detectors
  • Micro pattern
  • Micromegas
  • Micropattern gaseous detector (MSGC, gas electron multiplier, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, ingrid, etc)
  • Particle Identification Method
  • Particle tracking
  • Particle tracking detector (gaseous detector)
  • Tracking detectors
  • Energy dissipation




  • ISSN: 1748-0221