September 24, The ‘history’ program Yi Chih Liu Operation Group Taiwan Light Source
September 24, Outline Overview What can we do by using the program Applications Conclusion
September 24, A quick glance of History program
September 24, 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
September 24, Single click for one day beam status
September 24, Weekly report of machine operation
September 24, User availability
September 24, Statistics of the beam stability
September 24, Statistics of the beam position
September 24, Statistics of injection efficiency
September 24, Applications of history program
September 24, Display orbit in time sequence Time
September 24, Case study on spikes
September 24, Spike analysis (1) Due to the beam size Y grows up.
September 24, 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
September 24, Data analysis for finding error source RCVCPS10RCVCPC10A
September 24, Location of possible error source SWLS RCVCPS10 RCVCPS10A
September 24, Problem treated by control group
September 24, Trip events
September 24, /11-5:8:4(1852) PSI PSI A 9/11-5:8:3(1851) PSI PSI A Nitrogen increased IASW trip event traced by history program iaswaghp trip PSI iaswagnp trip PSI In Achromat Superconducting Wiggler (IASW) Data analyzed from o.1 Hz database
September 24, IASW Trip Event on 11-Sep :09:16 Cause of IASW-R6 trip from fast recorder Pressure interlock active
September 24, Quick check for a beam trip event
September 24, Kicker 2 Beam trip caused by K2 misfire
September 24, Conclusion Flexible and extendable A powerful diagnostic tool through linking other servers A platform for communication
September 24, Thank you !
September 24, A reliable indicator for monitoring beam quality Reproducible Comparable Simple optics
September 24, 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