developing the timepix telescope
DESCRIPTION
Developing the Timepix Telescope. Planning a Future Timepix Telescope Richard Plackett – VELO Testbeam Meeting CERN, 7th October 09. Overview. Strengths and Weaknesses of Current Telescope New Telescope Concept New Readout Systems Relaxed (PAN) Relaxed (NIKHEF) RUIN (Prague) - PowerPoint PPT PresentationTRANSCRIPT
Developing the Timepix Telescope
Planning a Future Timepix Telescope
Richard Plackett – VELO Testbeam MeetingCERN, 7th October 09
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Overview
Strengths and Weaknesses of Current Telescope
New Telescope Concept
New Readout SystemsRelaxed (PAN)Relaxed (NIKHEF)RUIN (Prague)MAXIPIX (ESRF)
New PCBSoftware
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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
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Future Timepix Telescope
New Readout
Timing Unit
DUT+ readout
New Readout
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
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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
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New Readouts - RUIN~kHz readout over USB2 (ethernet coming later)
~150MHz for multiple chips
Full prototype boards awaiting delivery
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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
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New Readouts - Summary
Rate Available InterfaceRELAXD (NIKHEF)
150Hz quad1kHz single
~1 month Gb Ethernet
RELAXD (PANalytical)
150Hz quad1kHz single
~1 month Gb Ethernet
RUIN (CTU) 150Hz quad1kHz single
USB 2
MAXIPIX (ESRF)
5 chips 1kHz 6 months from order
Optical?
MARS (Canterbury )
100Hz 10 chips ~12 months Custom IO
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
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LHCb Telescope Proposal
New Readout
Timing Unit
New Readout
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
TELL1
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New ‘Single’ PCBsData 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
Sutter Output – An easy connector for monitoring and measuring the actual shutter signal
On board voltage regulators to ensure stable operation
Mounting Holes to accurately position chipboard
Cutout behind chip to reduce scattering
Chip positioning guides to ensure accurate mounting
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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
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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…
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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