Upgrade of the LHCb VELO detector: VELOPIX minimum pixel size extremely high illumination: up to 290 Mhits/cm2/s continuous data readout sparse data (zero suppression) charge measurement high time resolution: ~ 1ns wide dynamic range : ~ 100μs high sensitivity : threshold ≈ 350e- Micro-pattern gas avalanche detectors: GOSSIP, TPC etc. Timepix3 is an approved project of the Medipix3 collaboration with an assigned budget (2-engineering runs in 2012, 130nm CMOS) wide range of non-HEP applications: X-ray imaging Dosimetry Compton camera, gamma polarization camera, fast neutron camera, nuclear fission, astrophysics … time-resolved imaging hit (photon) → ToA & ToT continuous & sparse readout minimum dead time suitable for HEP applications Vertex V.Gromov 24/06/11 5Ħ Required readout chips for the HEP applications TPC / micro-pattern gas detectors applications measures hit arrival time OR energy deposit on each pixel 2007: Timepix (CERN) external clock : 100 MHz full frame readout : serial port (10ms/frame) Limitations any event readout requires full frame no zero suppression dead time (no continuous readout) time resolution is only 10ns (bin size) slow front-end (time-walk ~120ns) Vertex V.Gromov 24/06/11 4ĥ Timepix3 project: design goals and current status Imaging / medical applications 1997: Medipix1 (CERN) - technology: 1μm CMOS array: 64 x 64 pixel: 170 um x 170 um : Medipix2 (CERN) - technology: 0.25μm CMOS, 6-metal array: 256 x 256 pixel: 55 um x 55 um energy resolved photon counting 2009: Medipix3 (CERN) - technology: 0.13μm CMOS, 8-metal charge summing mode improved energy resolution Vertex V.Gromov 24/06/11 3 Outline Medipix / Timepix family of pixel detectors Timepix3 : functionality and features Design and performance of some basic circuits Summary Vertex V.Gromov 24/06/11 2ģ Medipix detectors Photon (X-ray) counting hybrid pixel detector June 24, 2011Ģ Medipix / Timepix family of pixel detectors Vladimir Gromov2 Christoph Brezina3, Martin van Beuzekom2, Michael Campbell 1, Klaus Desch3, Vladimir Gromov2, Xiaochao Fang3, Ruud Kluit 2, Andre Kruth3, Tuomas Poikela1,4, Xavi Llopart 1, Francesco Zappon2 ,Vladimir Zivkovic2 1 CERN, Geneve, Switzerland, 2 National Institute for Subatomic Physics (Nikhef), Amsterdam, the Netherlands 3 Institute of Physics, Bonn University, Germany 4 University of Turku, Finland Vertex2011, Rust, Austria. 1 Development and Applications of the Timepix3 chip
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