Gigatracker is in the core of one of the spectrometers used in NA62. It's composed of three planes of silicon pixels detectors assembled in a traditional way: readout electronics bump bonded on silicon sensors. Each plane is composed by 18000 pixels 300 um x 300 um arranged in 45 columns and readout by 10 chips. The particularity of this sensor is that its timing resolution should be better than 200 ps in order to cope with high expected rate (800 MHz). Another particularity is its operation in vacuum.
CP3 is involved in several aspects in the production and operation of this detector.
1) Production of 25 GTK stations that will be used during the NA62 run
2) Operation of GTK during data taking: time and spatial calibration, efficiency studies, effects of radiation, ....
3) Track candidates reconstruction, simulation.
4) Signal development of the signal in the sensor. We use both commercial programs (i.e. TCAD by Synopsys) as well as software developed by us to study the expected signal in this sensor.