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LHC GCS

LHC GCS. Renaud Barillère – CERN IT-CO. Outline. Motivations and Objectives Problem description Status Planning and Resources Issues. Motivations. The LEP gas systems A lot of independently built systems No common control system Several operation models Several technologies

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LHC GCS

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  1. LHC GCS Renaud Barillère – CERN IT-CO LHC GCS - JCOP ER

  2. Outline Motivations and Objectives Problem description Status Planning and Resources Issues LHC GCS - JCOP ER

  3. Motivations • The LEP gas systems • A lot of independently built systems • No common control system • Several operation models • Several technologies • LHC: a favourable context • Recommended industrial control technologies • Fieldbus • PLCs • SCADA LHC GCS - JCOP ER

  4. The Gas Working Group • Mandate of EP-TA1-GS:Produce gas systems for all four LHC experiments. • Coherent design: • Common solution for HW and SW • Scope: • All components for gas, except gas storage. • Operation • Gas Maintenance Group • Gas Piquets LHC GCS - JCOP ER

  5. Deliverables and Objectives • End-User applications • For the four LHC experiments gas systems • Complete control applications • Supervision and Process Control layers • Integrated in LHC experiment DCS • Reduce efforts and cost • Development • Maintenance • Operation LHC GCS - JCOP ER

  6. Problem description • 23 gas systems in 4 experiments • Commonality • Modular architecture: Mixer, Distribution, Pump, Exhaust, Purifier, Analysis; Recovery, CO2 Absorber, CO2 Removal, CO2 Envelop. • Standard devices Valves, Flow Meters, Mass Flow Controllers, Pressure transmitters,etc. • Diversity • Optional modules • Options in modules LHC GCS - JCOP ER

  7. Strategy • Industrial technologies • SCADA, PLC, Fieldbuses • Use the industrial way • Frameworks • For process control and supervision • Based on the GWG gas modules • Instances • Ideal case: Automatic code production • Worst case: Systematic copy-paste procedures • Real case… LHC GCS - JCOP ER

  8. Architecture principles • Layered applications • Supervision • Display, Logging, Archiving, Recipes, Access Control • Unique look and feel across the 23 applications • Abstraction for operators and central team members • Process control • Automatic behaviors: I/O, STDs, Interlocks • Can run without supervision • Hierarchical architecture • Keep the modular view of GWG experts • Low level access for commissioning and debugging LHC GCS - JCOP ER

  9. Milestones • Analysis • Understand requirements for a typical gas system • Quantify the diversity/commonality • Feasibility studies • Selection of technologies • Selection of re-usable components • Design • Choice of generic solutions • Alice TPC • Validation of the design • GCS Framework production • Production of re-usable high level components • Instances production LHC GCS - JCOP ER

  10. Analysis • Completed for the standard modules • Evolving with the production of the experiments PRR • User Requirement Document • Description of the Gas Racks • Automatic behavior (STD, Alarms and Interlocks, Events) • Commands • Use Cases • For complexes module operation • HMI mock ups • To get feed back from Users and Product Leader • Gas system descriptions • An overview of the commonality LHC GCS - JCOP ER

  11. Mock-Up #3 Mixer module LHC GCS - JCOP ER

  12. Mixer modules LHC GCS - JCOP ER

  13. Distribution modules LHC GCS - JCOP ER

  14. Analysis: To be done… • Gas analysis module • Late HW design • Non standard modules • CO2 Envelop, CO2 Removal, Recovery • They are not expected to require complex control • Detailed top module • Delayed to identify UR from experience with ALICE TPC • Handling of problems not related to process • Communication problems. • Power failures • The selected SW components should offer natural solutions LHC GCS - JCOP ER

  15. Feasibility study • Technology survey and evaluations • Fieldbus devices • Analog valve, Mass Flow Controller, Pump, Bus coupler • PLCs • Siemens, Schneider, Wago • UNICOS • A Beta version of the PLC layer available in 2001 • Prototypes & small gas systems • CMS MSGC B1 & B2, ATLAS TRT, NA60. LHC GCS - JCOP ER

  16. Design • Software architecture • One PVSS system <-> One experiment gas plant • One UNICOS PCU <-> One sub-detector gas system • Preliminary HW architecture • Design patterns • Process control • I/Os, STDs, Alarms, Interlocks, Recipes, Commands • Supervision (not completed) • Design of GCS extensions to UNICOS • UNICOS PLC objects • Faceplates and Widgets LHC GCS - JCOP ER

  17. Operator workstations Control room CERN / Experiment Ethernet Main PLC CPU I/O modul ProfiBUS Ethernet Ethernet ProfiBUS coupler Surface bldg. ProfiBUS Device PBus PBus PBus PBus DI/O DI/O DI/O DI/O DAC DAC DAC DAC ADC ADC ADC ADC PLC CPU I/O modul ProfiBUS CAN-bus Ethernet US ProfiBUS Device UX HW Architecture CAN-bus ELMB ELMB ELMB P F F F F nW LHC GCS - JCOP ER

  18. Experiment Control System Shifter CMS Gas Piquet Status Status Sub-Detector Control System ATLAS PVSS PVSS PVSS UIM UIM UIM GASControl System ALICE LHCb EV EV EV Shifter, Gas expert, etc Status driver driver driver UIM UIM UIM Sub detector expert Integration in DCS LHC GCS - JCOP ER

  19. ALICE TPC • Design • Design of individual module process control • Completed: Mixer, Pump, Distribution, Exhaust • In progress: Purifier/CO2 Absorber • Options are incorporated • Design of modules supervision • In progress • UNICOS PVSS package in Beta version • Development • Required GCS extensions developed • Process control for the designed modules is developed • Mixer supervision in development • Engineering tools LHC GCS - JCOP ER

  20. Planning • Alice TPC • Modules: 2002Q4 -> 2003Q2 • System Tests: 2002Q3 -> 2003Q4 • Analysis: -> 2003Q3 • Non standard modules • Top module • New requirements… • GCS Framework • Design: 2003Q2 -> 2003Q3 • Implementation: 2003Q3 -> 2004Q1 • Instances • Implementation and commissioning: 2004-2006. LHC GCS - JCOP ER

  21. Detector experts Gas requirements EP-TA1-GS Gas Racks Electrical boxes with fieldbus connections Tests of the above First line maintenance Operation IT-CO User Requirements GCS framework (PVSS and PLC) 23 End user applications Tests of the above Second line maintenance All together Commissioning Who is doing what? LHC GCS - JCOP ER

  22. Resources • Numbers • Stability • A large fraction of temporary manpower. • The learning phases and transition are costly. LHC GCS - JCOP ER

  23. Risks • Planning • Some delays with Alice TPC • Planning the implementation and commissioning of instances • Implementations of systems before the GCS framework • Time between two systems commissioning • Technology • Evolution of Schneider for the finalization of HW architecture • Integration of the FlowScan (ELMB) in the control system • Protocol • Embedded software • DB infrastructure LHC GCS - JCOP ER

  24. Conclusions • A wide scope • 23 end-users applications • Complete vertical slices • Homogeneity is the key • PRR confirmed commonality • GCS Framework for 23 instances • Tools and technologies are identified • Design patterns are being validated • Current resource level should be maintained • Assumption: Planning stable, systems produced in series. • Stability to produce the GCS framework would be appreciated. LHC GCS - JCOP ER

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