Speaker
Jan Timmermans
(NIKHEF Amsterdam)
Description
In recent years the detection of minimum ionising particles in a gaseous
detector by means of a CMOS pixel readout circuit as direct anode, has been
demonstrated. Sofar the used pixel circuitry provided only a 2-dimensional
projection of the position of the primary ionisation clusters. In the newly
developed TimePix chip, based on the earlier used Medipix2 chip, each pixel
also has the capability to record the arrival time of the detected single
electrons. We present initial 3-dimensional reconstruction results from a
small drift chamber, equipped with the TimePix chip as active anode. The
readout chip is covered by a Micromegas foil to form a parallel-plate
amplification gap.
Author
Jan Timmermans
(NIKHEF Amsterdam)
