HLS bunch current measurement system

作者：Yang YongLiang; Ma TianJi; Sun BaoGen^*; Lu Ping; Wang JiGang; Zou JunYing; Tang LeiLei

来源：Science China Physics,Mechanics & Astronomy, 2011, 54(S2): S309-S312.

DOI：10.1007/s11433-011-4519-2

• bunch current
• fill-pattern
• synchronous phase shift
• Hefei Light Source (HLS)

Bunch current is an important parameter for studying the injection fill-pattern in the storage ring and the instability threshold of the bunch, and the bunch current monitor also is an indispensable tool for the top-up injection. A bunch current measurement (BCM) system has been developed to meet the needs of the upgrade project of Hefei Light Source (HLS). This paper presents the layout of the BCM system. The system based on a high-speed digital oscilloscope can be used to measure the bunch current and synchronous phase shift. To obtain the absolute value of bunch-by-bunch current, the calibration coefficient is measured and analyzed. Error analysis shows that the RMS of bunch current is less than 0.01 mA when bunch current is about 5 mA, which can meet project requirement.

• 出版日期2011-12
• 单位中国科学技术大学