Time Projection Chamber operating with SAMPA front-end

AbstraktAbstract

The TPC is operated with ArCO2 mixture (70/30), covering an active volume of 10x10x8 cm^3 and can register ionizing particle tracks in 3D. The uniform electric field is achieved by a field cage composed of printed circuit boards with 5 mm parallel strips at regular distances, interconnected by a voltage divider that provides a uniformly increasing potential. The field cage is fixed in the plastic 3D printed gaseous chamber that also holds the copper clad kapton cathode and the high voltage feedthrough. The readout plane is composed of a triple 10x10 cm^2 GEM stack, that can operate at charge gains up to 10 000 and has an intrinsic 2D position resolution around 350 um for this gas mixture, when imaging X-rays. The readout electrode has 10x12 pads (8x10 mm^2) that are read by 4 SAMPA chips using CERN's Scalable Readout System.

The TPC is operated with ArCO2 mixture (70/30), covering an active volume of 10x10x8 cm^3 and can register ionizing particle tracks in 3D. The uniform electric field is achieved by a field cage composed of printed circuit boards with 5 mm parallel strips at regular distances, interconnected by a voltage divider that provides a uniformly increasing potential. The field cage is fixed in the plastic 3D printed gaseous chamber that also holds the copper clad kapton cathode and the high voltage feedthrough. The readout plane is composed of a triple 10x10 cm^2 GEM stack, that can operate at charge gains up to 10 000 and has an intrinsic 2D position resolution around 350 um for this gas mixture, when imaging X-rays. The readout electrode has 10x12 pads (8x10 mm^2) that are read by 4 SAMPA chips using CERN's Scalable Readout System.