Speaker
Description
The possibility to realize a second detector at the IP8 position of Electron Ion Collider (EIC) is of great importance. It is aimed to provide complementarity and reference for the physics measurements of the future ePIC detector at the EIC with the possibility of extended physics measurements.
Time Projection Chamber (TPC) with GridPix readout is one of the most attractive options as it provides particle identification and high resolution tracking for the IP8 detector. The GridPIX technology is based on micromegas-style gain amplification. It is coupled with pixelated high-granular readout located below an etched aluminum mesh. providing amplification. This grid yields sufficient gain to provide good signal to noise ratio with more than 90% efficiency. Below the grid is an array of 55 by 55 μm pixels, providing high resolution measurement.
Using typical Argon-based mixtures, diffusion is most often sufficient and each electron from a cluster lands in a different hole. In this way, the GridPix detector technology promises a final realization of the long sought dream of cluster counting. Additionally, when coupled to a low diffusion gas, the GridPix technology will act as a high resolution tracker competitive with all-silicon systems.
I will present the concept and latest results on the GridPix TPC R&D for the EIC second detector.
