Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 27: Halbleiterdetektoren II

T 27.4: Talk

Tuesday, March 26, 2019, 16:45–17:00, H03

Measurement Results on Monolithic LFoundry HVCMOS Sensors — •Rudolf Schimassek and Ivan Perić — Karlsruher Institut für Technologie (KIT), Karlsruhe, Deutschland

HVCMOS pixel sensors are depleted active pixel sensors produced in commercial standard CMOS processes. Fast signal generation as well as radiation hardness make them an option for particle physics. Monolithic HVCMOS sensors also have a low material budget.

Typically, time resolution is limited by the power consumption of the pixel amplifiers. To overcome this limitation, signal to noise ratio has to be increased or innovative compensation means have to be implemented.

In LFoundry LF15A (150nm) HVCMOS process, two sensors were produced for process evaluation and development of features for future detectors. One evaluation feature is pixel trimming equalising the pixel characteristics enabling lower thresholds. Features for future detectors are parallel pixel to buffer (PPtB) readout for high rate environments and in-pixel sampling of the signal for improved time resolution.

In this contribution, test results of the detector chips will be presented.