Developing the Timepix Telescope

1. Developing the Timepix Telescope Planning a Future Timepix Telescope Richard Plackett – VELO Testbeam Meeting CERN, 7thOctober 09

2. Overview Strengths and Weaknesses of Current Telescope New Telescope Concept New Readout Systems Relaxed (PAN) Relaxed (NIKHEF) RUIN (Prague) MAXIPIX (ESRF) New PCB Software

3. Current Telescope Strengths • High resolution • Adaptability • Ease of use – Currently borrowed by SPS collimator group Weaknesses • Small number of Timepix assemblies available • Scattering from PCB mount • Low readout rate (1Hz) • Large jitter on timing (500ns) • Low rate for ToA measurements

4. Future Timepix Telescope DUT+ readout New Readout New Readout Timing Unit Timing Signals collected by a timing unit provide flexible software synchronisation Telescope arms and timing unit read back to PC via Ethernet or USB 2.0

5. New Readouts - RELAXD • high REsolution Large Area X-ray Detector • Designed to tile large areas, currently PAN and NIKHEF flavors due to parallel FPGA development ~kHz readout over ethernet 150MHz for multiple chips Prototype (PAN) presented last week at Medipix collaboration meeting

6. New Readouts - RUIN ~kHz readout over USB2 (ethernet coming later) ~150MHz for multiple chips Full prototype boards awaiting delivery

7. New Readouts - Maxipix • Developed by ESRF • Available six months after firm order • ~1kHz readout, although Timepix slower • Readout by optical link • Comes with PC as complete system • Can read multiple chips in parallel mode, but may need to do some work to make this fit with the telescope

8. New Readouts - Summary In summer testbeams we ran with 5 to 10ms shutter times to get ~200 tracks per frame With 1ms readout time from 10MHz clock and 150Hz readout we get 15% active time With 1ms readout time from 10MHz clock and 1kHz readout we get ~50% active time With 250us readout time from 40MHz clock and 1kHz readout we get 25% active time

9. LHCb Telescope Proposal New Readout New Readout Timing Unit Timing Signals collected by a timing unit provide flexible software synchronisation TELL1 Telescope arms and timing unit read back to PC via Ethernet or USB 2.0

10. New ‘Single’ PCBs Data IO – Backward compatibility with current chipboards Serial IO – connecting boards as a ‘quad’ to be read out together Sensor Bias – moved to a more convenient place On board voltage regulators to ensure stable operation Sutter Output – An easy connector for monitoring and measuring the actual shutter signal Cutout behind chip to reduce scattering Mounting Holes to accurately position chipboard Chip positioning guides to ensure accurate mounting

11. Software… • Timing unit programming and file output • Control numerous output files – one file per spill? (hardware?) • More convenient control panel (not 8 individual panels) • Keep it compatible with Pixelman (as a plugin??) • Keep fast display of frames (not so trivial) • Add TELL1 & LHCb functionality • Add automatic track finding • Need to be careful not to make it too hard to use the data

12. To Do • Choose a flavour of new readout RUIN, RELAXD, MaxiPix • Choose or develop timing unit • Develop new ‘quad’ PCBs with cutouts • Design mechanics (although can test in current system) • Integrate TELL1 and LHCb DAQ • Software…

13. Conclusions • Telescope has been successful and already borrowed by SPS collimator group • Would like to up frame rate and add accurate timing • Improve control and readout software • Work to do on a new PCB • A number of options for new readout • Need to integrate TELL1 for LHCb use