Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 29: TPC und Micromegas

T 29.2: Talk

Monday, March 9, 2015, 17:00–17:15, I.12.02 (HS 31)

Investigations of the long-term stability of a GEM-TPC — •Oleksiy Fedorchuk for the LCTPC-Deutschland collaboration — DESY, Hamburg

For the International Large Detector (ILD) at the planned International Linear Collider (ILC), a Time Projection Chamber (TPC) is foreseen as the main tracking detector. The gas amplification will be done by Micro Pattern Gaseous Detectors (MPGD). One option is to use Gas Electron Multipliers (GEM). While the applicability of GEMs for the gas amplification in a TPC readout has been shown, the focus of the current research is to improve the stability and reliability of the readout modules. This is a crucial requirement for the operation in the final ILD TPC. This presentation shows results from precise discharge current measurements and parallel optical investigations. Ways to improve the long-term stability of the amplification system have been studied.