1. September 24, 20071 The ‘history’ program Yi Chih Liu Operation Group Taiwan Light Source

2. September 24, 20072 Outline Overview What can we do by using the program Applications Conclusion

3. September 24, 20073 A quick glance of History program

4. September 24, 20074 Purpose of history program Monitoring electron beam properties Monitoring photo beam stability Tracing of machine parameters Analyzing the correlation of machine parameters variation Calculating the merit of operation statistics for user shift

5. September 24, 20075 Single click for one day beam status

6. September 24, 20076 Weekly report of machine operation

7. September 24, 20077 User availability

8. September 24, 20078 Statistics of the beam stability

9. September 24, 20079 Statistics of the beam position

10. September 24, 200710 Statistics of injection efficiency

11. September 24, 200711 Applications of history program

12. September 24, 200712 Display orbit in time sequence Time

13. September 24, 200713 Case study on spikes

14. September 24, 200714 Spike analysis (1) Due to the beam size Y grows up.

15. September 24, 200715 Spike analysis (2) spikes passive signal driven by the GFB vs. error source response to the active source GFB ON The spike was caused by the malfunction of the SWLS

16. September 24, 200716 Data analysis for finding error source RCVCPS10RCVCPC10A

17. September 24, 200717 Location of possible error source SWLS RCVCPS10 RCVCPS10A

18. September 24, 200718 Problem treated by control group

19. September 24, 200719 Trip events

20. September 24, 200720 9/11-5:8:4(1852) 19.568 PSI 15.038 PSI 0.025 A 9/11-5:8:3(1851) 15.472 PSI 14.859 PSI 259.837 A Nitrogen increased IASW trip event traced by history program iaswaghp trip level @18.5 PSI iaswagnp trip level @16 PSI In Achromat Superconducting Wiggler (IASW) Data analyzed from o.1 Hz database

21. September 24, 200721 IASW Trip Event on 11-Sep-2007 05:09:16 Cause of IASW-R6 trip from fast recorder Pressure interlock active

22. September 24, 200722 Quick check for a beam trip event

23. September 24, 200723 Kicker 2 Beam trip caused by K2 misfire

24. September 24, 200724 Conclusion Flexible and extendable A powerful diagnostic tool through linking other servers A platform for communication

25. September 24, 200725 Thank you !

26. September 24, 200726 A reliable indicator for monitoring beam quality Reproducible Comparable Simple optics

27. September 24, 200727 Check sequence for poor beam quality Check the beam stability from bpm archive Check the monitor system from the intensity distribution of pinhole position Check the performance of feedback systems from beam spectrum and beam size Check the correlation between orbit feedback and the change of I.D. position Check the correlation between orbit display and the ripples of power supplies Perform the real time signal trend to find the correlation