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Toward a costing model

What next?. Toward a costing model. Technology decision n Schedule n Organization. P. Le Dû CEA DAPNIA Saclay. Relatively long time between bunch trains : 199 ms Rather long time between bunches: 337 ns Rather long bunch trains ( same order as detector read-out time: 1 ms.

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Toward a costing model

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  1. What next? Toward a costing model Technology decision n Schedule n Organization P. Le Dû CEA DAPNIA Saclay

  2. Relatively long time between bunch trains : 199 ms Rather long time between bunches: 337 ns Rather long bunch trains ( same order as detector read-out time: 1 ms Decision LC beam structure 150 Hz 120 Hz Cold Warm 5 Hz 2820 bunches 85 bunches 190 bunches / // / / // / 199 ms 6.6 ms 1ms 238 ns 238 ns • Relatively long time between bunch trains (same order as read-out time): 6.6 ms • Very short time between bunches: 2.8 ns/1.4 ns • Rather short pulses : 238 ns

  3. Data Flow Read-Out Buffer Detector Front End Software trigger concept No hardware trigger Sub-Detector Read-out ( event by event or BT) Signal processing -digitization Perform Zero suppression and/or data compression Local Buffering – dead time free pipeline 1 ms 3000 Hz Switching Network • Data Collection is triggered by every train crossing • Full event building of one bunch train • Software Selection • Sequential selection (equivalent to L1-L2-L3 …) with off line algorithms • Event classification according to • physics, calibration and machine needs • Select bunch of interest Processor Farm 1 MBytes Average event size 200 ms 30Hz On-line processingEvent Filtering ….. Few sec Storage & Analysis Data streams S1 S2 S3 S4 Sn

  4. Detector Channels Tesla Architecture 799 M 300 K 40 M 1.2 M 20 K 32 M 200 K 75 K 40 K 20 K VTX SIT FDT TPC FCH ECAL HCAL MUON LCAL LAT 8 MB 1 MB 2 MB 110 MB 1 MB 90 MB 3 MB 1 MB 1 MB 1 MB Detector Buffering (per bunch train in Mbytes/sec) Gb Links Event manager & Control Event building Network 10 Gbit/sec (LHC CMS 500 Gb/s) Processor farm (one bunch train per processor) P P P P P P P P P P P P P P P P Computing ressources (Storage & analysis farm) 30 Mbytes/sec  300TBytes/year

  5. Schedule of milestones 2005, 2007,2009 First one for next LCWS ( april 2005)  simple and short document! Define a list of technical issues and challenges to be addressed Define ‘ clearly’ the boundaries’ between the various systems T/DAQ Subdetector RO GDN Machine … Study in parallel 2models of detectors (LD & SiD) Estimate number of channels, bandwidth Estimate quantity of hardware (interfaces, processors, links … ), sofware ? and manpower ( is LHC a good model?) Build a wordwide ‘international ‘long term’strong team Europ,North America and Asia  meetings Include long term sociology  NOT reinventing the wheel! Consequencies and tasks

  6. Boundaries  Global MODEL Subdetectors Front End Sdet RO chain FE Buffer interface Calibration monitoring Alignment • GDN • Detector Integration • Running modes • Local stand alone • Test • Global RUN • Remote • slow control • Monitoring Machine Synchronization Detector feedback Beam BT adjustment Uniform interface Global synchronisation Partitionning (physical and logical) OFF line ???? GRID ….. Final storage ??? Analysis, MC ??? Modelling? Which protiotype? T/DAQ Bunch Train Buffer interfaces Links and Event Building Control - supervisor On line Processing (SW trigger & algorithms (calib,monitoring and physics) Local Data logging

  7. FLC ‘today’ Network model Local/global Remote Control On-Detector Front End RO (Silicon On Chip)  Interface: Intelligent PCI ‘mezzanines’ Synchro Run Control Detector Read-Out Node Monitoring Histograms Sub detector farm Local partition Dataflow Manager Event Display Distributed Global NetworK Machine DCS Databases On-Line Processing Mass storage Data logging High Level Trigger Farm Analysis Farm ...

  8. Introduction usha mallik (The University of Iowa) File: usha_mallik.doc [21.0 KB] 19:13 29 Jul 2004 Linear Collider DAQ J.J. Russell (Stanford Linear Accelerator Center) File: j.j._russell.ppt [38.5 KB] 19:21 29 Jul 2004 Present and Future DAQ Patrick Le Du (Saclay) File: patrick_le_du.ppt [651 KB] 19:44 29 Jul 2004 Linear Collider DAQ Tom Markiewicz (Stanford Linear Accelerator Center) File: tom_markiewicz.ppt [295 KB] 19:53 29 Jul 2004 Machine Detector Interface DAQ Issues Eric Torrence (University of Oregon) File: eric_torrence.pdf [264 KB] 19:57 29 Jul 2004 DAQ at a warm LC tomas markiewicz (SLAC) File: tomas_markiewicz.ppt [612 KB] 15:14 03 Aug 2004 Global Detector Network Rick2 Van Kooten (Indiana University) File: rick2_van_kooten.pdf [12.5 MB] 20:40 03 Aug 2004 Victoria workshop

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