DAQ activity in UK Presented by: Giles Barr Warwick 26.6.2018 1 - - PowerPoint PPT Presentation

DAQ activity in UK

Presented by: Giles Barr Warwick 26.6.2018

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Brief overview

• ProtoDUNE DAQ
• [Jennifer Haigh talk soon]
• Performance studies
• [Phil Rodrigues talk soon]
• Consortium + Architecture etc.
• [Simon Peeters talk just now]
• Prototyping, preparation for production in UK
• [this talk]

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ProtoDUNE DAQ [See talk by Jennifer Haigh]

Much progress:

• UK provided
• Hardware for timing
• Software for photo-dets,

trigger, timing

• Computers, disk-storage
• Online monitoring

framework and plots

• Was ready for cold-box

testing of APAs

• Stable runs with all

components together

• Triggering and timing

commissioning in progress Looking forward to beam

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Performance studies

[See also Phil R talk next]

Supernova burst detection is a unique challenge for DAQ.

• Required to take all the

data

• Algorithm studies in full

swing

The architecture is well fixed and agreed. There are small

• ptimizations for cost and to

fit the skills of other consortium members still ahead. The part that takes lots of time is filtering noise and hit

• finding. How can this be

done in real-time? [Phil R. talk next]

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5

Detectors’ Electronics Off detector readout systems Data summaries Ring Buffer Trigger Farm Data Processing Farm Zero suppression and compression occurring at different stages of the DAQ, depending on trigger type.

Overall DAQ design

Overall DAQ design

[From Simon's talk just now]

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Overall DAQ design

Front-end DAQ UK hardware FELIX Back-end DAQ FNAL & UK real-time software

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Hardware development

(Front-end DAQ)

• Evolution from

ProtoDUNE DAQ

• UK hardware

development

• Prototype DPM design

progressing well; first prototype nearly ready for submission, precursor to cost-

• ptimized final design.
• Plans for carrier board

prototype.

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Fi Firmwar are development

• 10 second buffer in DRAM
• Collect enough data to decide if SN
• Look back before trigger fires
• Solid-state storage for > 100s of data if SN trigger

To Back-end Data Selection Diagram – Babak Abi

Trigger Com m and

David Cussans | DAQ Firmware meeting, RAL 31st May 18 9

Ma Main hardware deliverable: Front End DAQ

FP FPGA: Compression + Fi Filter & Hit finding + buffering

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m2 nvme PL DDR4 PS DDR4 m2 nvme PL DDR4 PS DDR4 MTP to LC multi- fiber breakout cable

Optical link Samtec 'flyover' Commercial form-factor alternative

Overall DAQ design

Front-end DAQ UK hardware FELIX Back-end DAQ FNAL & UK real-time software

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Software for backend DAQ

The main framework is artDAQ

• The artDAQ group is flexible in what can be added and has

added many features for ProtoDUNE There is plenty to do, some very interesting for software

• experts. E.g.
• Real-time trigger hit delivery mechanism
• Global trigger and data flow orchestrator design
• Error recovery: top-down design/policy
• Subscription run-control/partitioning model

Working effectively with many-core DAQ machines and fast-

• networking. Increasing data collection reliability

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Software design studies (Back-end DAQ)

Main challenges:

• DUNE receives >1TB/s
• Much smaller physics

trigger rate, but high efficiency needed.

• Find hits locally
• Centralize final

decisions

• Ongoing study on

software architecture progressing rapidly

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UK activity

Pre-construction grant:

• ProtoDUNE
• Hardware/Firmware [Big]
• Simulation and triggering
• Architecture
• Test stands

Planning for construction grant

• Front-end DAQ [Big]
• Back-end DAQ [Bigish]
• Timing system
• Testing, facilities & ops
• Simulation and performance

monitoring

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Summary

Many activities ongoing:

• ProtoDUNE has been the major focus so far and is

going well

• UK Prototyping projects have been well placed to

supply the main DAQ for DUNE.

• Custom hardware board (including cool SLAC SSD

idea) and back-end software are main pieces of work going forward.

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Backup

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DAQ – super-brief introduction

• Two caverns (either 1 x APAs, 1 x DP or 2 x APAs) +

photon detectors

• Beam and calibration events at predictable times
• Continuous triggering for cosmic, atmospheric

neutrinos, NDK, SN-relic, etc...

• O(1 drift) readout non-zero suppressed
• Special trigger for a supernova burst. Copy information

for many seconds to local SSD drives (non zero- suppressed)

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