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Rui Gao, University of Oxford, U.K. on behalf of the TORCH Collaboration (University of Oxford, University of Bristol and CERN) DEVELOPMENT OF SCALABLE.

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Presentation on theme: "Rui Gao, University of Oxford, U.K. on behalf of the TORCH Collaboration (University of Oxford, University of Bristol and CERN) DEVELOPMENT OF SCALABLE."— Presentation transcript:

1 Rui Gao, University of Oxford, U.K. on behalf of the TORCH Collaboration (University of Oxford, University of Bristol and CERN) DEVELOPMENT OF SCALABLE ELECTRONICS FOR TORCH TIME-OF-FLIGHT DETECTOR

2 Outline TORCH design and principles Photon detection Development of electronics Future work 24th September 2014TWEPP 2014, Aix En Provence, France 2

3 The basics of the TORCH design Low-momentum particle identification up to 10GeV/c through Time-Of-Flight measurement Utilises Cherenkov light for fast signal production Needs an overall 70ps time resolution for single photons in the detector 5m 6m Time Of internally Reflected Cherenkov 24th September 2014TWEPP 2014, Aix En Provence, France 3 TORCH design and principles

4 pp 10 – 300 mrad Candidate location for TORCH in LHCb [1] 4 TORCH in LHCb TORCH design and principles 24th September 2014TWEPP 2014, Aix En Provence, France

5 Required granularity of the final TORCH MCP. Uses Micro Channel Plate as photon detector Final device requires: Stable gain performance up to at least 5C/cm 2 Granularity equivalent to 8x128 pixels 53x53mm 2 active area, 60mm pitch Development of MCP-PMTs underway by Photek, UK Photon Detection 24th September 2014TWEPP 2014, Aix En Provence, France 5 Photon detection

6 Development in Electronics: Background 24th September 2014TWEPP 2014, Aix En Provence, France 6 Test setup and results at CERN, currently instrumented with a Photonis 8x8 MCP and 16-ch electronics [3]. Development of electronics No corrections for time-walk nor for INL. Previous system [2] 16-ch board Development-board -based readout

7 Development in Electronics: Goals Time-of-flight measurement of 8x64 channels per MCP, charge sharing technique applied to achieve the 8x128 equivalent granularity Fit within the 60mm dimension of a photon detector Overall timing resolution requirement is 70ps per single photon, electronics and MCP need to provide 50ps per channel [2] Scalable design to suit different iterations of MCPs through stages of their development Flexible readout to be compatible with an experiment readout framework, e.g. LHCb 24th September 2014TWEPP 2014, Aix En Provence, France 7 Development of electronics

8 Main Data Flow NINO HPTDC NINO HPTDC FPGA READOUTCARD MCP DAQPC Amplifier & Timeover ThresholdFast TimingMeasurementFormattingandControl Front EndBoard Readout4xFEboards Storage,Monitoring& Control 24th September 2014TWEPP 2014, Aix En Provence, France 8 Development of electronics NINO HPTDC NINO HPTDC FPGA READOUTCARD MCP DAQPC Amplifier & Timeover Threshold Readout4xFEboards Storage,Monitoring& Control Fast TimingMeasurementFormattingandControl

9 MCP NINOHPTDC Readout Readout adaptor MCP Mother Board Modularity One MCP attached to mother board Up to 8 NINO and HPTDC boards (64-ch per board) One readout adaptor One or more readout board Powered by a single 5v supply 2.5kV HV to MCP. TWEPP 2014, Aix En Provence, France 9 MCP 24th September 2014 Development of electronics Side view Front View Top View

10 Assembly 24th September 2014TWEPP 2014, Aix En Provence, France 10 MCP MCP mother board NINO board HPTDC board Readout board Readout adaptor Development of electronics 3D model produced by C. Frei, CERN MCP

11 Analogue Front End – NINO 2 x NINO - Time Over Threshold Measurement [3], 64-ch board DAC – Setting threshold Input – negative phase only Potentiometer – threshold quick settings LVDS output, DAC control and power 24th September 2014TWEPP 2014, Aix En Provence, France 11 Development of electronics

12 NINO32 Performance Generator NINO32 Scope Trigger Test Setup 50ps / div T1 - T2 10k events Sigma = 38ps T1 T2 24th September 2014TWEPP 2014, Aix En Provence, France 12 Development of electronics 10pf

13 HPTDC Board – Time to Digital Conversion 2x HPTDC[4] ASICs, 64-ch board LVDS input from NINO Spartan3AN HPTDC configuration and control Data formatting and buffering Power Input: clock, trigger, serial slow control, fast control Output: TDC data, all signals in LVDS 24th September 2014TWEPP 2014, Aix En Provence, France 13

14 HPTDC board – Additional Features On-board HPTDC readout control Local HPTDC configuration and start up Buffering with FPGA Decoding slow control command from Readout board Offline INL corrections for HPTDC 24th September 2014TWEPP 2014, Aix En Provence, France 14

15 Readout Board LVDS I/O Fan out 4 x clocks, 4 x triggers and 52 pairs of LVDS I/Os Standalone JTAG for TDC board 2.5v and 3.3v @ 3A max Gigabit Ethernet PHY HDMI Connector External clock and 3 bi-directional LVDS pairs, pinout compatible with Timepix3 Telescope TLU. Standard LEMO/ SMA interface are available through adaptor. Single 5V power supply Spartan6 LX45T 1Gbit DDR3 RAM 200MHz OSC 24th September 2014TWEPP 2014, Aix En Provence, France 15

16 Readout Scheme Existing scheme: fixed size, block-based readout Readout a fixed number of 32-bit words from one TDC board, then move to the next board Padding is used when buffer under-run Event-based readout is under development Readout board will keep track of event numbers Associate data from all TDC boards with an event number and sent as one group 24th September 2014TWEPP 2014, Aix En Provence, France 16 Development of electronics

17 Photek MCP Mother Board For a Photek MCP prototype, circular tube, 32x32 pixel 8 pads are grouped together in the coarse (horizontal) direction, equivalent to 4x32 Connection to MCP provided by Anisotropic Conductive Film (ACF) SMAs to inject calibration signal and a start time signal 24th September 2014TWEPP 2014, Aix En Provence, France 17 Development of electronics Photek MCP mother board

18 Photonis MCP Mother Board Mother board under development for Photonis 32x32 MCPs 4 pads are grouped together in the coarse direction, providing equivalent to 8x32 channels Connection to MCP provided by conductive glue SMAs to inject calibration signal and a start time signal Provide AC coupling between MCP and NINO A Mechanical drawing of Photonis 32x32 MCP mother board 24th September 2014TWEPP 2014, Aix En Provence, France 18 Development of electronics

19 Readout Adaptor 24th September 2014TWEPP 2014, Aix En Provence, France 19 A mechanical design that is compatible with both Photek prototype and Photonis 32x32 MCP, PCB layout to follow up. Connectors for 4 HPTDC boards, pitch and position match mother boards Connectors for 2 readout boards

20 DAQ Labview-based DAQ with online monitoring, control (bottom) and configuration (right). All analysis, correction and calibration systems are offline 24th September 2014TWEPP 2014, Aix En Provence, France 20 Development of electronics

21 Future work Test beam SPS at CERN in October- November 2014 and PS at December 2014 Radiator plate (1x12x35cm³) has been ordered Focusing prism - Fused Silica Test commercial Photonis MCP as well as costume Photek prototype 4 NINO + 4 HPTDC + 1 Readout board, 256 channels Final square 8x64 MCP to be delivered in 2 years time. 24th September 2014TWEPP 2014, Aix En Provence, France 21 Future work

22 The End, Thanks! 24th September 2014TWEPP 2014, Aix En Provence, France 22

23 References [1] A. Papanestis, et. al., The RICH detector of the LHCb experiment, in Proceedings of TIPP 2014. [2] Gao et al., Development of Precision Time-of-Flight Electronics for LHCb TORCH, Journal of Instrumentation 9 (2014) C02025. [3] L. Castillo García, et al., iming performance of a MCP photon detector read out with multi-channel electronics for the TORCH system, in proceedings of 14th ICATPP Conference. [4] E. Cowie, et. al., TORCH – a Cherenkov based Time-of-Flight Detector, in Proceedings of TIPP 2014. [5] F. Anghinolfi, P. Jarron, A.N. Martemiyanov et al., NINO: an ultra-fast and low-power front-end amplifier/discriminator ASIC designed for the multigap resistive plate chamber, Nucl. Instr. and Meth. A 533 (2004) 183 [6] M. Mota, J. Christiansen, S. Débieux et al., A flexible multi-channel high-resolution Time-to-Digital Converter ASIC, IEEE Nucl. Sci. Symp. Conf. Rec. 2 (2000) 155. 24th September 2014TWEPP 2014, Aix En Provence, France 23

24 Backup Slides 24th September 2014TWEPP 2014, Aix En Provence, France 24

25 Powering Scheme 5~9V HV 2.5KV 5V 2.5V Readout Board Adaptor Board DC-DC 9A per voltage 3.3V HPTDC Board Local regs 2.5V @1.5A 3.3V@1A 3.3V NINO32 Board Local regs @700mA MCP x4 24th September 2014TWEPP 2014, Aix En Provence, France 25 Development of electronics Local DC-DC and LDO regs

26 NINO32 Performance Backup Generator NINO32 Scope Trigger Test Setup 200ps / div Tt – T1 10k events Sigma = 55ps Tt T1 T2 24th September 2014TWEPP 2014, Aix En Provence, France 26

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