A triple-GEM telescope for the TOTEM experiment

The Totem Experiment at the Lhc

In order to fulfil its physics programme the TOTEM experiment1 has to cope with the challenge of triggering and recording events in the very forward region with a good acceptance for particles produced at very small angles with respect to the beam. The evaluation of the total cross section with an error down to 1÷2% will in particular require the simultaneous measurement of the elastic scatteri...

The GEM-Discs for the PANDA experiment

In order to optimize the acceptance, these GEMTrackers have to be of large diameters Ø0.9m (2x), 1.12m and 1.48m and will be placed 0.81m, 1.17m, 1.53m and 1.89m downstream of the target, respectively. The current design assumes up to four double planes with two projections per plane. With the envisaged position resolution of 0.1mm the system promises sufficient momentum resolution and a double...

Development and performance of large scale triple GEM for CMS

Test and characterization of a new Triple-GEM detector

In my thesis project, I provide a description of the entire process of materials preparation, assembly, testing, and characterization of several triple-GEM (Gas-Electron Multiplier) prototype detectors. GEM detectors represent one of the latest developments in a new style of gaseous particle detectors. They have become well-known and widely used. Improvements in foil production are important fo...

A TPC with Triple-GEM Gas Amplification and TimePix Readout

We present measurements with a GEM based TPC prototypes and the TimePix CMOS ASIC as charge collecting anode. Tests with a small prototype were performed in a 5GeV electron beam at DESY. It is shown that the point resolution for short drift distances is better than 20 μm. The achieved time resolution is better than 10 ns at 100MHz clock frequency. Furthermore, experimental studies with an enlar...