Speaker
Mr
Timofei Maltsev
(Budker Institute of Nuclear Physics)
Description
Coordinate detectors based on Gas Electron Multipliers (GEM) are used in
experiments at many high energy physics centers and at Budker Institute of Nuclear Physics
particularly. Spatial resolution of these detectors is known to be in tens microns scale. Also
the detectors possess a rate capability up to $10^{7} cm^{−2} s^{−1}$. Consequently, the precise study of
best possible coordinate resolution, achieved with GEM-detectors, is a significant task. The
experimental data, collected by the moment, provides the possibility to compare it with the
results of the simulation. The simulation of the detector performance includes transport of
electrons through the detector medium, tracking of an avalanche evolution inside the working
volume, as well as registering of the signal distribution on the readout strips. The simulation of
individual detector shows that its spatial resolution is considerably better than the experimental
results with the difference about two standard deviations. In order to find out possible reasons
of the contradiction between measurements and the simulation of the individual detector, the
simulation of complete experimental set-up (including tracking detectors) is performed. The
results of complete set-up and individual detector simulations are determined to coincide in
general.
Primary authors
Mr
Lev Shekhtman
(Budker Institute of Nuclear Physics)
Mr
Timofei Maltsev
(Budker Institute of Nuclear Physics)
Mr
Vasily Kudryavtsev
(BINP, NSU)
