Mu2e Grounding and Shielding Review: Trigger & DAQ R. Rivera - - PowerPoint PPT Presentation

Mu2e Grounding and Shielding Review: Trigger & DAQ

• R. Rivera

Trigger & DAQ L2 Manager 5/10/16

Introduction and Scope

Trigger and Data Acquisition (TDAQ)

• Provides necessary components for the collection of digitized data from

the Tracker, Calorimeter, CRV, Stopping Target Monitor, and Extinction Monitor.

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• Delivers data to online and
• ffline processing for

analysis.

• Is responsible for detector

synchronization, control, monitoring, and operator interfaces.

• Sub-detectors are

responsible for power supplies, front-end electronics, and signal fanout in detector hall.

General Philosophy

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• Optical isolation from DAQ to detector electronics

Detector Front-ends DAQ Room

TDAQ Interfaces

• Front-end bidirectional data links (3.125Gbps multi-mode optical)
• Timing distribution system (50MHz optical)
• Accelerator sync signals (single-mode fiber)
• Slow control networks (100/1000 Ethernet network – See Detector

Controls & Monitoring talk)

• Offline storage and site networking (10G optical network)
• 14 x 208VAC/20A circuits for 7 racks in DAQ room (racks on Safety

Ground)

• Control room operator interfaces (1G Ethernet)

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TDAQ Noise Requirements

• All TDAQ electronics are in DAQ room
• All digital signals
• Optical data transmission to/from each rack (8b/10b)
• FPGA and CPU processing (SEU)

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Encoded System Clock DAQ Servers CRV ROCs

CRV FEBs

CRV Clock Fanouts Accelerator Clock/Sync Cal/Tracker Clock Fanouts Event Building Switch Data Switch Data Logger Access Switch Run Control Host Offline Storage, Remote Control Room

Data, Timing, Slow Control Connections

Management Switch Slow Control (DCS) Host Copper Optical

X 3 X 12 X 20

Accelerator, Cryo, Solenoid Control Servers Ethernet Ethernet

Calorimeter ROCs Tracker ROCs

CANbus*

* Secondary detector DCS connection …primary connection is virtual channel

• n optical data link

Ethernet Switch

Ethernet to CANbus Adapter

5/10/16 DAQ Room Detector Hall Isolation Line Isolation Line

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Management Connections

Slow Control (DCS) Host

* Connections to network management ports, server IPMI ports, rack PDUs

DAQ Servers Event Building Switch Data Switch Data Logger Access Switch Run Control Host Management Switch*

X 3 X 12 X 20

Copper Optical Offline Storage, Remote Control Room Rack PDUs 5/10/16 DAQ Room Detector Hall

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Encoded System Clock DAQ Servers CRV ROCs CRV Clock Fanouts Cal/Tracker Clock Fanouts Event Building Switch Data Switch Data Logger Access Switch Run Control Host DAQ Room Detector Hall

Power & Ground Connections

Management Switch Slow Control (DCS) Host

X 3 X 12 X 20 Tracker & Calorimeter HV

Rack PDUs (14) 208 AC 120 AC Ethernet Switch

Remote DC Power (48 V)

POE DAQ Room Ground Detector Ground

Ethernet to CANbus Adapter

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CRV FEBs Calorimeter ROCs Tracker ROCs

Isolation Line

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Summary

• 1. Does TDAQ address potential noise problems? Will TDAQ

achieve desired performance?

– Electronics are in DAQ room, optically isolated, and all digital.

• 2. Is the design technically sound? Any outstanding issues?

Concerns?

– Optical isolation and commercial electronics are well

• understood. No known outstanding issues.
• 3. Significant risks? Mitigation plans?

– Environment in DAQ room must be reasonable for commercial electronics.

• 4. Safety concerns?

– Standard racks (208 VAC)

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