Speaker
Mathieu Perrin-Terrin
(CERN)
Description
The Gigatracker is an hybrid silicon pixel detector built for the NA62 experiment aiming at measuring the branching fraction of the ultra-rare kaon decay at the CERN SPS. The detector has to track particles in a beam with a flux reaching 1.3 MHz/mm and provide single-hit timing with 200 ps RMS resolution for a total material budget of less than 0.5% per station. The tracker comprises three 63.1 mm 29.3 mm stations installed in mbar vacuum and cooled with liquid C6F14 circulating through microchannels etched inside 130 um thick silicon plates. Each station is composed of a 200 um thick silicon sensor readout by 2 5 custom 100 um thick ASIC, called TDCPix. Each chip contains 40 45 asynchronous pixels, each 300 um 300 um, and is instrumented with 100 ps bin time-to-digital converters. In order to cope with the high rate, the TDCPix is self-triggered and data are sent out through four 3.2 Gb/s serialisers. We will describe the detector and the results from the 2014 NA62 run.
Author
Mathieu Perrin-Terrin
(CERN)