Tuning procedure of Normal operation

• beam injection to 100mA

• COD measurement
• COD correction
• tune measurement
• end of tuning

• preparation
• start up GUIs
• patrol in tunnel
• start up of RF, magnets
• warm-up the klystron power supply
• execute SR mode of safety panel
• set the RF acceleration voltage
• initialize the magnets and set the parameter to magnets
• COD correction, adjust the RF frequency
• beam injection, check injection efficiency
• tune measurement, set the value of tunes to the program for COD correction
•          COD correction, measurements of dispersion, chromaticity
• check injection orbit
• check the injection position using screen monitor
• RF phase adjustment to reduce coherent synchrotron oscillation of the injected beam
• end of tuning

Linac

• measurement of perviance of electron gun

• COD、dispersion
• tune, chromaticity
• injection efficiency
• timing adjustment of RFKO
• tuning of LSBT
• BM1-LS
• SI, KI

• offset of BPM using low tune optics
• reproducibility of BPM
• injection efficiency
• COD correction
• dispersion correction
• measurement of momentum acceptance
• horizontal beam size
• distortion of betatron function

Example of injection. Multi-bunch, it reaches to 100mA within about 9 min.

example of filling     27Feb2002 160*(12-1), 1turn is 4.8us

exaple of measured dispersion

example of measured chromaticity

injected beam oscillation measured by single pass monitor on 16Jan2002

trend of COD harmonic

trend of RF frequency

beam lifetime

 

beam size measured by visibility monitor