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Timepix2 as a prototype for VELOpix

Timepix2 as a prototype for VELOpix. X. Llopart 5 May 2010. Limitations of the Timepix chip. Chip architecture originally designed for imaging is used for single (or sparse multiple) event readout Non triggerable Full frame readout only Serial readout (100 MHz): ~100 fps

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Timepix2 as a prototype for VELOpix

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  1. Timepix2 as a prototype for VELOpix X. Llopart 5 May 2010

  2. Limitations of the Timepixchip • Chip architecture originally designed for imaging is used for single (or sparse multiple) event readout • Non triggerable • Full frame readout only • Serial readout (100 MHz): ~100 fps • Parallel readout (100 MHz): ~3000 fps • Either arrival time OR amplitude information • Timewalk > 50ns • Large periphery -> Non active area (~2000 µm)

  3. Timepix2 Scope • Several groups in the Medipix3 collaboration have shown interested in a new version of the Timepix→ Timepix2 • Large range of applications (HEP and non-HEP): • X-ray radiography, X-ray polarimetry, low energy electron microscopy • Radiation and beam monitors, dosimetry • 3D gas detectors,neutrons, fission products • Gas detector, Compton camera, gamma polarization camera, fast neutron camera, ion/MIP telescope, nuclear fission, astrophysics • Imaging in neutron activation analysis, gamma polarization imaging based on Compton effect • Neutrino physics • Reuse many building blocks from Medipix3 chip (2009) • Timepix2 is an approved project by the Medipix3 collaboration with an assigned budget (2-engineering runs)

  4. Timepix2 Main Requirements

  5. Timepix2 Readout requirements 1 External trigger starts the readout of the events which match the on-pixel programmed delay 2 As events come they are readout of the chip using a token pass technique

  6. Timepix2 Pixel Requirements 1 Data-driven readout mode

  7. Timepix 2 Pixel Analog Requirements

  8. Timepix2 vsVELOpix

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