Presentation is loading. Please wait.

Presentation is loading. Please wait.

R3 for ABCN Discussion. 2 17 Feb 2011R3 for ABCN Discussion Regional Readout Level-1 Muon/Calo system identifies a Region of Interest (RoI)Level-1 Muon/Calo.

Published byLeona O’Neal’ Modified over 8 years ago

Similar presentations

Presentation on theme: "R3 for ABCN Discussion. 2 17 Feb 2011R3 for ABCN Discussion Regional Readout Level-1 Muon/Calo system identifies a Region of Interest (RoI)Level-1 Muon/Calo."— Presentation transcript:

1 R3 for ABCN Discussion

2 2 17 Feb 2011R3 for ABCN Discussion Regional Readout Level-1 Muon/Calo system identifies a Region of Interest (RoI)Level-1 Muon/Calo system identifies a Region of Interest (RoI) RoI mapped to set of front-end modulesRoI mapped to set of front-end modules Regional Readout Request (R3) signal is sent ONLY to modules in RoIRegional Readout Request (R3) signal is sent ONLY to modules in RoI Modules readout Regional Data (RD) in a similar manner to normal dataModules readout Regional Data (RD) in a similar manner to normal data Regional data in intercepted on the ROD, forwarded to the track finderRegional data in intercepted on the ROD, forwarded to the track finder Track finder contributes to Level-1 Trigger decisionTrack finder contributes to Level-1 Trigger decision ROD Crate x20 RODs RoI Mapper L1 Muon/Calo Staves RoIs Track Finder L1

3 3 17 Feb 2011R3 for ABCN Discussion USA15 ROD-Crate RoI/R3 to Stave Flow 1.Muon and/or Calo triggers 2.RoI Mapper - sync/align (Unclear on RoI data format and rate from L1)- sync/align (Unclear on RoI data format and rate from L1) RoI Mapper fanoutRoI Mapper fanout 3.GBT to ROD Crate timing interface (TIM) Unclear GBT data latencyUnclear GBT data latency 4.ROD-crate TIM to ROD, with possible decoding (sent over backplane)(50ns)TIM to ROD, with possible decoding (sent over backplane)(50ns) ROD decode, map, routes to each channel(25ns)ROD decode, map, routes to each channel(25ns) 5.GBT to SMC Unclear GBT fast command and data latencyUnclear GBT fast command and data latency 100m fibre to FE100m fibre to FE Muon Trigger RoI Mapper ROD Calo Trigger SM Stave SM Stave ROD SMC 1700ns150ns 100ns 75ns600ns GroupFanout TIM GBT

4 4 Working parameters Although large buffers provide for long latencies, it is beneficial to be efficient: More time for trigger decisionMore time for trigger decision Smaller FE buffersSmaller FE buffers Less R3 induced dead-timeLess R3 induced dead-time Latency can be reduced by: Fast R3 distribution (as is reasonable)Fast R3 distribution (as is reasonable) Compress R3-Data to reduce packet countCompress R3-Data to reduce packet count Prioritised R3-Data packet handlingPrioritised R3-Data packet handling 17 Feb 2011R3 for ABCN Discussion

5 5 R3-Data details Leaves chip ASAPLeaves chip ASAP –Queue jump Data reductionData reduction –E.g. 3 clusters, no width –Cut on cluster width (>3 = discarded) –Total nit/cluster count in packet –1 packet only (or 2, only) Easily identifiable packetEasily identifiable packet –Quick routing on ROD 17 Feb 2011R3 for ABCN Discussion

6 6 Pipeline L0 Buffer L0 R3 R3 Data Format L1 (L0ID) L1 Data Format Strips Readout Synchronous R3 L1 Derandomise + minimal processing on the ABCN + simple test environment + low latency -Off-detector R3 distribution needs to be fast - Deadtime -More bandwidth for R3 on the stave (more lines, faster) 17 Feb 2011R3 for ABCN Discussion

7 7 Yes/No R3 + Asynchronous + Simple of buffer management - higher bandwidth than Yes only option 17 Feb 2011R3 for ABCN Discussion L0 Buffer L0 R3 Y L1 (L0ID) L1 Data Format Strips Readout L1 Derandomise R3 Derandomise R3 Data Format Pipeline R3 N RD FIFO

8 8 Yes only (with L0ID) R3 See Mitch’s diagram.... + very flexible - longest latency 17 Feb 2011R3 for ABCN Discussion

9 9 Boundaries Useful to setup some working limits (even if they get changed in AUW) L0 rate - 500kHzL0 rate - 500kHz L1 rate - 50kHzL1 rate - 50kHz R3 data volume (simple latency)R3 data volume (simple latency) –1 packet per R3 per ABCN R3 overall latency (queuing time etc)R3 overall latency (queuing time etc) –Max readout time – 50us? R3 Data compression strategies/parametersR3 Data compression strategies/parameters –Report number of hits (or clusters?) - up to 32? Or maybe a course hitmap (1 bit/8)Or maybe a course hitmap (1 bit/8) –Only process clusters <4 strips wide –Only report first 3 clusters 17 Feb 2011R3 for ABCN Discussion

10 10 Some More Thoughts... Packet inspection?Packet inspection? –May improve intra-chip prioritising R3 deadtime?R3 deadtime? –Dropped packets affects trigger efficiency –Track finder forces L1 for missing R3-Data events –rate reduction Slow chip – 40MHz - only do 80MHz at outputSlow chip – 40MHz - only do 80MHz at output –DDR? –Timing issues? 17 Feb 2011R3 for ABCN Discussion

Download ppt "R3 for ABCN Discussion. 2 17 Feb 2011R3 for ABCN Discussion Regional Readout Level-1 Muon/Calo system identifies a Region of Interest (RoI)Level-1 Muon/Calo."

Similar presentations

1 8 Feb 2012Low Latency R3-Data Lower Latency R3-Data: Summary Muons suggest 15us latency is possible with current hardware R3 into ABC → R3-data out HCC.

1 8 Feb 2012Low Latency R3-Data Lower Latency R3-Data: Summary Muons suggest 15us latency is possible with current hardware R3 into ABC → R3-data out HCC.
1 ACES Workshop, March 2011 Mark Raymond, Imperial College. Two-in-one module PT logic already have a prototype readout chip for short strips in hand CBC.

1 ACES Workshop, March 2011 Mark Raymond, Imperial College. Two-in-one module PT logic already have a prototype readout chip for short strips in hand CBC.
Muon Electronic Upgrade Data Format. 32 bits nODE Architecture: remarks Six 32 input channels nSYNC for each nODE Three nSYNC per GBT LLT implemented.

Muon Electronic Upgrade Data Format. 32 bits nODE Architecture: remarks Six 32 input channels nSYNC for each nODE Three nSYNC per GBT LLT implemented.
Http://wwwhephy.oeaw.ac.at/p3w/cms/trigger.

MICE Fiber Tracker Electronics AFEII for MICE (Front end readout board) Recall: AFEs mount on ether side of the VLPC cass, with fibers going to the VLPCs.

MICE Fiber Tracker Electronics AFEII for MICE (Front end readout board) Recall: AFEs mount on ether side of the VLPC cass, with fibers going to the VLPCs.
1 (Gerard Visser – US Belle II Electronics Meeting 7/15/2011) Belle-II bKLM Readout System Concepts, &c. W. Jacobs, G. Visser, A. Vossen Indiana University.

1 (Gerard Visser – US Belle II Electronics Meeting 7/15/2011) Belle-II bKLM Readout System Concepts, &c. W. Jacobs, G. Visser, A. Vossen Indiana University.
Requirements for the NSW VMM3 readout ASIC and the NSW Readout Controller ASIC NSW Readout Working Group NSW Electronics Design Reviews, February 2015.

Requirements for the NSW VMM3 readout ASIC and the NSW Readout Controller ASIC NSW Readout Working Group NSW Electronics Design Reviews, February 2015.
20 Feb 2002Readout electronics1 Status of the readout design Paul Dauncey Imperial College Outline: Basic concept Features of proposal VFE interface issues.

20 Feb 2002Readout electronics1 Status of the readout design Paul Dauncey Imperial College Outline: Basic concept Features of proposal VFE interface issues.
US Test Beam Results Of Front End Timing T. Ferguson, N. Terentiev* (Carnegie Mellon University) CMS EMU Meeting University of California, Davis Feb 25.

US Test Beam Results Of Front End Timing T. Ferguson, N. Terentiev* (Carnegie Mellon University) CMS EMU Meeting University of California, Davis Feb 25.
Summary Ted Liu, FNAL Feb. 9 th, 2005 L2 Pulsar 2rd IRR Review, ICB-2E, video: 82Pulsar

Summary Ted Liu, FNAL Feb. 9 th, 2005 L2 Pulsar 2rd IRR Review, ICB-2E, video: 82Pulsar
MICE Workshop Sept 2004 AFEII for MICE Recall: AFEs mount on ether side of the VLPC cass, with fibers going to the VLPCs between them. AFE has 8 identical.

MICE Workshop Sept 2004 AFEII for MICE Recall: AFEs mount on ether side of the VLPC cass, with fibers going to the VLPCs between them. AFE has 8 identical.
Samuel Silverstein Stockholm University L1Calo upgrade discussion Overview Issues  Latency  Rates  Schedule Proposed upgrade strategy R&D.

Samuel Silverstein Stockholm University L1Calo upgrade discussion Overview Issues  Latency  Rates  Schedule Proposed upgrade strategy R&D.
Trigger Supervisor (TS) J. William Gu Data Acquisition Group 1.TS position in the system 2.First prototype TS 3.TS functions 4.TS test status.

Trigger Supervisor (TS) J. William Gu Data Acquisition Group 1.TS position in the system 2.First prototype TS 3.TS functions 4.TS test status.
Distributed Multimedia March 19, 2001. 2 Distributed Multimedia What is Distributed Multimedia?  Large quantities of distributed data  Typically streamed.

Distributed Multimedia March 19, Distributed Multimedia What is Distributed Multimedia?  Large quantities of distributed data  Typically streamed.
SVT workshop October 27, 1998 XTF HB AM Stefano Belforte - INFN Pisa1 COMMON RULES ON OPERATION MODES RUN MODE: the board does what is needed to make SVT.

SVT workshop October 27, 1998 XTF HB AM Stefano Belforte - INFN Pisa1 COMMON RULES ON OPERATION MODES RUN MODE: the board does what is needed to make SVT.
High-Level Interconnect Architectures for FPGAs An investigation into network-based interconnect systems for existing and future FPGA architectures Nick.

High-Level Interconnect Architectures for FPGAs An investigation into network-based interconnect systems for existing and future FPGA architectures Nick.
U N C L A S S I F I E D FVTX Detector Readout Concept S. Butsyk For LANL P-25 group.

U N C L A S S I F I E D FVTX Detector Readout Concept S. Butsyk For LANL P-25 group.
High-Level Interconnect Architectures for FPGAs Nick Barrow-Williams.

High-Level Interconnect Architectures for FPGAs Nick Barrow-Williams.
Copyright © 2000 OPNET Technologies, Inc. Title – 1 Distributed Trigger System for the LHC experiments Krzysztof Korcyl ATLAS experiment laboratory H.

Copyright © 2000 OPNET Technologies, Inc. Title – 1 Distributed Trigger System for the LHC experiments Krzysztof Korcyl ATLAS experiment laboratory H.
PicoTDC Features of the picoTDC (operating at 1280 MHz with 64 delay cells) Focus of the unit on very small time bins, 12ps basic, 3ps interpolation Interpolation.

PicoTDC Features of the picoTDC (operating at 1280 MHz with 64 delay cells) Focus of the unit on very small time bins, 12ps basic, 3ps interpolation Interpolation.

Similar presentations

Ads by Google