Speaker
Description
The beam position monitoring system is an important component of electron accelerator systems. Signals from the button-type probes can be used to acquire various information about the beam bunch, such as the transverse position, longitudinal phase, charge quantity, and bunch length. In bunch-by-bunch longitudinal position measurement, it is necessary to accurately measure the temporal information of each bunch. Currently, the temporal resolution for such measurements can reach the sub-picosecond level. However, in large-scale electron accelerator systems, signal delay variations caused by long-term drift and temperature drift in cables can lead to significant deviations in bunch-by-bunch longitudinal phase measurement results. To address this problem, a cable delay calibration method has been developed to enable real-time measurement of transmission cable delay variations during beam experiments. For systems that process narrowband signals or do not require prolonged broadband transmission, multiple sinusoidal signals with constant amplitude and fixed frequency intervals are introduced at the input of the transmission cable. At the output, phase differences between these signals are extracted through high-speed sampling and digital signal processing, enabling accurate determination of cable delay variations. A dedicated calibration signal module has been designed and integrated into the constructed test platform. A series of tests have been conducted, and the results show that the time precision of the proposed cable delay calibration method meets the application requirements.
| Minioral | Yes |
|---|---|
| IEEE Member | No |
| Are you a student? | Yes |