1. ALICE TPC Gas Control System (toward the first fully implemented LHC gas system) S. Haider EP-TA1-GS

2. ALICE TPC gas system status, JCOP2 18.6.2003 S.Haider EP/TA1 Outline Status What did we learn so far Future Conclusion

3. ALICE TPC gas system status, JCOP3 18.6.2003 S.Haider EP/TA1 Project status (June 2003) Gas HWe-boxPLCPVSScommissioned Mixer Pump CO2-rem. 80%0% Purifier 60%80%0% Distribution 0% Analysis 30%0% Exhaust 0% Backup 30%00% Test in 167 20% of Gas HW 100% done

4. ALICE TPC gas system status, JCOP4 18.6.2003 S.Haider EP/TA1 PVSS Schneider PLC Quantum Schneider PLC Premium Ethernet ProfiBUS WAGO I/O modules Bronkhorst Digital Mass Flow Controllers Control Architecture (for Mixer)

5. ALICE TPC gas system status, JCOP5 18.6.2003 S.Haider EP/TA1 Typical 2 gas Mixer Control box,- ProfiBUS WAGO interface

6. ALICE TPC gas system status, JCOP6 18.6.2003 S.Haider EP/TA1 ALICE TPC Mixer rack ProfiBUS-daisy-chain of 4 Mass Flow Controllers

7. ALICE TPC gas system status, JCOP7 18.6.2003 S.Haider EP/TA1 Using UNICOS… Premium and Quantum (with UNICOS + GCS extension) PVSS (Unicos Beta3 and GCS extensions) Mass Flow Controller, Analog Valve and Frequency controller were originally not in UNICOS (developed by IT/CO)

8. ALICE TPC gas system status, JCOP8 18.6.2003 S.Haider EP/TA1

9. ALICE TPC gas system status, JCOP9 18.6.2003 S.Haider EP/TA1 Window tree Modules

10. ALICE TPC gas system status, JCOP10 18.6.2003 S.Haider EP/TA1 M

11. ALICE TPC gas system status, JCOP11 18.6.2003 S.Haider EP/TA1 Modes of operation

12. ALICE TPC gas system status, JCOP12 18.6.2003 S.Haider EP/TA1

13. ALICE TPC gas system status, JCOP13 18.6.2003 S.Haider EP/TA1

14. ALICE TPC gas system status, JCOP14 18.6.2003 S.Haider EP/TA1

15. ALICE TPC gas system status, JCOP15 18.6.2003 S.Haider EP/TA1 What did we learn so far? (1/3) Development  Gas racks and software can be prepared in parallel  Simplified HW drawings were necessary for user panels  SW was tested in the lab without the gas HW ready Process control  Validation of UR states, alarms, commands, etc  Validation of PLC code design  Validation of the UNICOS concept for gas control  UNICOS not easy to start with!

16. ALICE TPC gas system status, JCOP16 18.6.2003 S.Haider EP/TA1 What did we learn so far? (2/3) PVSS  UNICOS Beta version,- but most of functionality available (~80%)  Validation of window layers, navigation menus etc…  Long way to go for trending !!! Operation  Common look and feel of all Process Control Objects (PCO)  Access of objects in Auto/Manual mode  Recipes for constants, alarms and parameters  FSM based operation

17. ALICE TPC gas system status, JCOP17 18.6.2003 S.Haider EP/TA1 What did we learn so far? (3/3) Commissioning  After short introduction we were able to operate and fine tune process parameters without the help of the developers  Easily understandable menu structures and concepts of operation  FAST! Took only about 1 week!

18. ALICE TPC gas system status, JCOP18 18.6.2003 S.Haider EP/TA1 Future plans Alice TPC  Remaining Racks  System integration In 167 with dummy volume Validation of interaction UR identification for top module UNICOS  Porting to UNICOS PVSS release (before system integration)

19. ALICE TPC gas system status, JCOP19 18.6.2003 S.Haider EP/TA1 GCS framework  Once developed, ALICE TPC will be ported to this gas framework  Rem: Some gas framework components are already used Low level objects in PLC and PVSS Synoptic of PVSS Recipes…

20. ALICE TPC gas system status, JCOP20 18.6.2003 S.Haider EP/TA1 Conclusion The first “Vertical Gas Slice” with final architecture was successfully implemented and tested. (Visits welcome) We validated: URD, UNICOS for gas, PLC code generation, PVSS, operation issues, PID regulation etc.. Started development of Gas Frame Work with the experience gained