A Reticule Size CMOS Pixel Sensor (ULTIMATE) Dedicated to the STAR HFT Upgrade Thanh Hung PHAM on behalf of the IPHC (Strasbourg) PICSEL group Outline STAR HFT Upgrade: PXL detector CMOS Pixel Sensor requirements Sensors optimization Recent ULTIMATE test results Lab test and Beam test Summary + Perspectives
A Reticule Size CMOS Pixel Sensor (ULTIMATE) Dedicated to the STAR HFT Upgrade Thanh Hung PHAM on behalf of the IPHC (Strasbourg) PICSEL group. Outline STAR HFT Upgrade: PXL detector CMOS Pixel Sensor requirements Sensors optimization Recent ULTIMATE test results Lab test and Beam test - PowerPoint PPT Presentation
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A Reticule Size CMOS Pixel Sensor (ULTIMATE) Dedicated to the STAR HFT Upgrade
Physical Goals : Identification of mid rapidity Charm and Beauty mesons and baryons through direct reconstruction and measurement of the displaced vertex with excellent pointing resolution
2cm of row controls signal Row sequencer logic : Uniformly distributed with dispersion < 500ps
Optimization of zero suppression to cope with STAR environment Up to 9 states /row Segmented by 15 groups of 64 columns -> Symmetrical distributions of digital controls over ~2cm (at
50MHz) High density & High speed readout :~0.9 Mpix & < 200µs frame readout
2 memories of 2048x32 bits 2 outputs of 160MHz Increase frequency up to 160MHz
Layout constraint : 2261µmx19872µm The output of SRAM is serialized at 160MHz250µm
ULTIMATE sensors for the PXL detector of STAR HFT experiment has been designed and tested in 2011
The lab test and beam test showed : Robust regarding temperature variations Operational with analog power supply down to 3V High detection efficiency ( > 99%) with very low fake event of beam test High yield : > 90%
12 sensors fully functional 4 with 1% of death pixels
The Ultimate sensor fulfils all STAR HFT specifications
Engineering run of ULTIMATE sensor (12 wafers) is being submitted in September for equipping the engineering prototype detector
Start of run at RHIC in FY 2012
The ULTIMATE sensor development allows to accumulate expertises for future sensor designs (ALICE, AIDA, CBM, EIC, …)