SLIDE 1
DUNE timing system
Stoyan Trilov, University of Bristol DUNE UK Meeting 11/12/2019
1
Outline
§ DUNE timing system
–Requirements –Design –Hardware –CCM –Summary
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DUNE timing system Stoyan Trilov, University of Bristol DUNE UK - - PowerPoint PPT Presentation
DUNE timing system Stoyan Trilov, University of Bristol DUNE UK - - PowerPoint PPT Presentation
DUNE timing system Stoyan Trilov, University of Bristol DUNE UK Meeting 11/12/2019 1 Outline DUNE timing system Requirements Design Hardware CCM Summary 11/12/2019 2 DUNE timing requirements Clock alignment within
SLIDE 2
SLIDE 3
DUNE timing requirements
§ Clock alignment within a detector module: 𝑃(1 𝑜𝑡) § Clock alignment between detector modules: 𝑃(1 𝑛𝑡) – Interface between single phase and dual phase timing systems (different) – Enables formation of supernova triggers § Receive beam information from beam timing system: 𝑃(1 𝜈𝑡) – Absolute time alignment § Single phase timing system (SPTS) (this talk) § Dual phase timing system (DPTS) (White Rabbit, not in this talk)
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SLIDE 4
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Optical to RF RF to Optical Single mode fibre GPS Receiver + PTP Grand Master White Rabbit Timing Network (Dual Phase) IEEE1588 1000Base-BX NTP Single mode fibre (calibrate time delay down shaft) Single Phase Timing System NTP IRIG 10MHz Single Phase/ Dual Phase Cross Check Optical to RF RF to Optical Single mode fibre GPS Receiver + PTP Grand Master Single mode fibre (calibrate time delay down shaft) Single Phase Timing System NTP IRIG 10MHz IEEE1588 1000Base-BX Single Phase/Dual Phase Cross Check Passive Splitter/ Combiner Single mode fiber Single mode fiber 1000Base-BX Passive Splitter/ Combiner x 150 Direct Attach (copper) cables Single Phase Readout Components in CUC Surface Single Phase Readout Components
- n Cryostat
Dual Phase Readout Components Timing Endpoint Timing Endpoint
- High availability (redundancy)
- 2 GPS antennas
- 2 GPS disciplined oscillators
- 2 𝜈TCA crates (hot spare)
SLIDE 5
DUNE single phase timing system
§ GPS disciplined oscillator provides a 10 MHz clock and
UTC code
§ Both signals fed into a “master” card hosted in a 𝜈TCA crate § Clock/commands distributed to 12 fan-out cards using the
𝜈TCA crate backplane
§ Each fan-out card hosts 2 timing mezzanine cards (FMC) § Each FMC has four optical connectors § 12×2×4 = 96 optical outputs
– 1:8 optical splitters → 96×8 = 768 fibres
§ Develop prototype for ProtoDUNE run 2 (2021) 11/12/2019 5
IEEE1588 (White Rabbit) to Dual Phase GPS Receiver + IEE1588 Grand Master NTP DAQ & Run Control 10 MHz IRIG-B Master Timing Card MCH AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Direct Attach Cable Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) AMC Timing FMC (4x SFP) Timing FMC (4x SFP) uTCA Crate 12 full-height double width AMC Each AMC with two FMCs Setup/Control/Monitoring ( 1 GBit/s ) Experiment Network Direct attach cable to hot-swap system Crates in CUC 1000Base-BX single mode fibre Fibre to hot-swap system 1000Base-BX 1:2 Passive Optical Splitter/ Combiner 1:8 Passive Optical Splitter/ Combiner To timing endpoints- n Cryostat
SLIDE 6
DUNE SPTS hardware status
§ Necessary prototyping hardware is being ordered – 𝜈TCA crate: Schroff 11890-170 – MCH (crate and daughter card (AMC) control and management: N.A.T. – Two (redundant) crate power supplies: N.A.T. NAT-PM-AC600 – JTAG module: NAT-JSM-FPOSF – AFC module (fan-out card) https://ohwr.org/project/afc – GPS disciplined oscillator – Timing FMCs (ProtoDUNE-like)
Ø (DAQ kits)
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- rdered
being ordered
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SLIDE 7
DUNE timing system and CCM
§ CCM meeting dedicated to timing on 13/11/19:
https://indico.fnal.gov/event/22410/ – Kick off discussion on timing/CCM interface
§ Some of the major discussions:
– Should we view the timing system as infrastructure? – How does timing system redundancy kick in? – What happens to the endpoints during failover period? – How does the timing system deal with malfunctioning endpoints?
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CCM Timing system control software
Hardware/firmware
Debug and development
Commands
Information Debug information/ commands
SLIDE 8
Summary
§ DUNE timing system
– Hardware purchasing in progress – Review of interface documents – Prepare prototype for ProtoDUNE run 2 (2021)
§ ProtoDUNE timing system
– Implementation/testing of foreseen features, auto-delay adjustment
ØTest setup at Bristol
– New batch of timing FMCs
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