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Feb 15 – 19, 2016
Vienna University of Technology
Europe/Vienna timezone

The NA62 GigaTracker

Feb 18, 2016, 10:15 AM
EI7 (Vienna University of Technology)


Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Talk Semiconductor Detectors Semiconductor Detectors


Mathieu Perrin-Terrin (CERN)


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 $K^+ \to \pi^+ \nu \bar{\nu}$ at the CERN SPS. The detector has to track particles in a beam with a flux reaching 1.3 MHz/mm$^2$ and provide single-hit timing with 200ps RMS resolution for a total material budget of less than 1.5$X_0$. The tracker comprises three 60.8mm$\times$27mm stations installed in vacuum ($\sim10^{-6}$mbar) and cooled with liquid C$_6$F$_{14}$ circulating through micro-channels etched inside few hundred of microns thick silicon plates. Each station is composed of a 200$\mu$m thick silicon sensor readout by 2$\times$5 custom 100$\mu$m thick ASIC, called TDCPix. Each chip contains 40$\times$45 asynchronous pixels, each 300$\mu$m$\times$300$\mu$m and is instrumented with 720 time-to-digital converters with 100ps bin. In order to cope with the high rate, the TDCPix is equipped with four 3.2Gb/s serialisers sending out the data. We will describe the detector and the results from the 2015 NA62 run.

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