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The WaveDAQ System for the MEG II Upgrade

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Presentation on theme: "The WaveDAQ System for the MEG II Upgrade"— Presentation transcript:

1 The WaveDAQ System for the MEG II Upgrade
Stefan Ritt, Paul Scherrer Institute, Switzerland Luca Galli, Fabio Morsani, Donato Nicolò, INFN Pisa, Italy The WaveDAQ System for the MEG II Upgrade 28 May 2015 13th Pisa Meeting on Advanced Detectors

2 The WaveDAQ System for the MEG II Upgrade
Stefan Ritt, Paul Scherrer Institute, Switzerland Luca Galli, Fabio Morsani, Donato Nicolò, INFN Pisa, Italy The WaveDAQ System for the MEG II Upgrade 28 May 2015 13th Pisa Meeting on Advanced Detectors

3 13th Pisa Meeting on Advanced Detectors
DRS4 Chip 0.2-2 ns Inverter “Domino” ring chain IN Storage capacitors Out FADC 33 MHz Clock Shift Register Switched Capacitor Array (Analog Memory) developed at PSI 5 GSPS / 11.5 bits SNR, 9 channels on 5 mm x 5 mm chip, 40 mW / chn. Used at ~200 locations worldwide 2012: “Gigahertz Waveform Sampling: An Overview and Outlook” Pile-up rejection O(~10 ns) Time measurement O(10 ps) Charge measurement O(0.1%) 28 May 2015 13th Pisa Meeting on Advanced Detectors

4 13th Pisa Meeting on Advanced Detectors
MEG & MEG II MEG Experiment Separated DAQ & Trigger 3000 Channels DRS4 (0.8 GSPS / 1.6 GSPS) 1000 Channels Trigger (100 MSPS) 5 Racks Power Trigger Clock distribution Active Splitter PMT Trigger Bus DRS DAQ HV S2: M. de Gerone: An extreme high resolution Timing Counter for the MEG II Experiment S2P: M. Simonetta: Test and characterization of SiPMs intended as detector for the MEG timing counter S5P: D. Nicolò: An FPGA-based trigger for the MEG II Experiment S5P: A. Pepino: A high performance Front End Electronics for Drift Chamber readout in the MEG II Experiment S7P: M. Grassi: A new cylindrical drift chamber for the MEG II Experiment S7P: G. Rutar: A Dedicated Calibration Tool for the MEG and MEG II Positron Spectrometer S7P: L. Galli: MEG II drift chamber prototype characterization with the silicon based cosmic ray tracker at INFN Pisa S7P: M. Venturini: Ageing tests for the MEG II drift chamber S9P: D. Nicolò: A liquid hydrogen target for the calibration of the MEG and MEG II liquid xenon calorimeter S9P: K. Ieki: Upgrade of the MEG liquid xenon calorimeter with VUV-light sensitive large area SiPMs SiPM TDAQ MEG II Experiment 2014- 9000 Channels Same rack space Combine DAQ & Trigger 28 May 2015 13th Pisa Meeting on Advanced Detectors

5 13th Pisa Meeting on Advanced Detectors
Crate Options Feature VME ATCA ??? Transfer speed O(100 MB/s) ✔ Dual-Star Topology with Gbit links ✗ Shelf management Fast trigger distribution Low-jitter precision clock O(ps) 200 V SiPM biasing < 2000 EUR per crate including power 28 May 2015 13th Pisa Meeting on Advanced Detectors

6 WaveDAQ System Fans blow from back to front Crate Management Board
Power supply 24V / 300W Fan / Temp. control Power cycle each slot FPGA Firmware upload Ethernet remote control Data Concentrator Board Trigger Concentrator Board 16 WaveDREAM boards (256 channels) 28 May 2015 13th Pisa Meeting on Advanced Detectors

7 13th Pisa Meeting on Advanced Detectors
WaveDREAM Board (WDB) Spartan 6 Drs4 based REAdout Module 28 May 2015 13th Pisa Meeting on Advanced Detectors

8 Preamp Gain BW3db (MHz) Noise (mV) 1 940 0.37 10 880 0.40 100 300 1.2
500 1.7 800 3.3 Different compensations LTC6409 LMH6629 LMH6629 3.3 mV at output = 33 mV at input PE4215 ADC904 PE4215 28 May 2015 13th Pisa Meeting on Advanced Detectors

9 13th Pisa Meeting on Advanced Detectors
WaveDREAM2 HV Spartan ~ 5 EUR / channel +/- 1mV Ripple < 10 mV 28 May 2015 13th Pisa Meeting on Advanced Detectors

10 Temperature Sensor Extension
accuracy ±0.5∘, 3 EUR / sensor 1-16 sensors per WD2 board with only one coaxial cable Automatic HV adjustments with temperature changes 28 May 2015 13th Pisa Meeting on Advanced Detectors

11 Trigger Concentrator Board (TCB)
Crate local trigger KINTEX 7 Global trigger Receives serial links (SERDES) from WD boards Computes crate local trigger Send trigger via serial links to global trigger in dedicated crate FCI Densishield cables KINTEX 7 28 May 2015 13th Pisa Meeting on Advanced Detectors

12 13th Pisa Meeting on Advanced Detectors
Ancillary system Contains master clock Distribute clock (jitter < 12 ps measured) Distribute trigger 4 diff. pairs for Clock Trigger Busy (Sync) 28 May 2015 13th Pisa Meeting on Advanced Detectors

13 DAQ Concentrator Board (DCB)
Receive Gbit links from WDB Use SERDES instead GTX (lower latency) Waveform preprocessing in Zynq CPU Output via Gbit Ethernet (10 Gbit optional) Board under design Tests with Zed-Board and “Backplane Simulator” 28 May 2015 13th Pisa Meeting on Advanced Detectors

14 13th Pisa Meeting on Advanced Detectors
Half Height Backplane 28 May 2015 13th Pisa Meeting on Advanced Detectors

15 13th Pisa Meeting on Advanced Detectors
SPI configuration 28 May 2015 13th Pisa Meeting on Advanced Detectors

16 Gbit links for DAQ & Trigger
Event Builder PC Global Trigger 28 May 2015 13th Pisa Meeting on Advanced Detectors

17 13th Pisa Meeting on Advanced Detectors
Trigger Bus & HV 28 May 2015 13th Pisa Meeting on Advanced Detectors

18 13th Pisa Meeting on Advanced Detectors
Clock Distribution 28 May 2015 13th Pisa Meeting on Advanced Detectors

19 WaveDAQ Clock Distribution
DCB WD WD WD WD master clock Crate LMK03000 Jitter Cleaner FCI Densishield Cable Goal: < 5 ps clock jitter at system level 28 May 2015 13th Pisa Meeting on Advanced Detectors

20 13th Pisa Meeting on Advanced Detectors
Pin Assignment 28 May 2015 13th Pisa Meeting on Advanced Detectors

21 13th Pisa Meeting on Advanced Detectors
Minimal System Power-over-Ethernet 28 May 2015 13th Pisa Meeting on Advanced Detectors

22 13th Pisa Meeting on Advanced Detectors
One-crate system Up to 256 Channels Detector Gbit Ethernet 220 V 28 May 2015 13th Pisa Meeting on Advanced Detectors

23 13th Pisa Meeting on Advanced Detectors
MEG II System 35 crates x 256 channels = 9000 channels . . . 28 May 2015 13th Pisa Meeting on Advanced Detectors

24 13th Pisa Meeting on Advanced Detectors
WaveDAQ Performance Trigger resolution 10 ns (100 MHz clock) Trigger bandwidth 8 Gbit / s Trigger latency <380 ns *) (9000 channels) DAQ bandwidth 2 Gbit / s DAQ time measurement 10 ps *) DAQ dead time ms / event MEG II: 7 x 107 m/s, DAQ eff. > 30 Hz *) *) projected 28 May 2015 13th Pisa Meeting on Advanced Detectors

25 13th Pisa Meeting on Advanced Detectors
Conclusions WaveDAQ system has been designed to fulfill needs of MEG II experiment System has huge potential for many others (costs: ~130 EUR / channel) Status: Crate fully working, trigger board and WaveDREAM board successfully tested, firmware to be finished, DCB under design First full crate test end of 2015, full system (35 crates) in 2016 DRS5 chip (no dead-time) planned for 2017+ 28 May 2015 13th Pisa Meeting on Advanced Detectors

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