Related Experiment Video
Updated: May 11, 2025
09:49
An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
Published on: October 23, 2018
15.9K
Development of a sub-nanosecond pulse generator and its beam experiments
Chunyu Xu1, Fenglei Shang1, Lei Shang1
1National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
The Review of Scientific Instruments
|April 17, 2025
Summary
A new sub-nanosecond pulse generator (sub-nano-PG) was developed for the Hefei Advanced Light Facility
Area of Science:
- Physics
- Accelerator Technology
- Electrical Engineering
Background:
- The Hefei Advanced Light Facility (HALF) requires precise electron beam control.
- Existing pulse generators may not meet stringent timing and stability requirements for advanced light sources.
Purpose of the Study:
- To develop and evaluate a sub-nanosecond pulse generator (sub-nano-PG) for the electron gun of the HALF.
- To optimize the pulse generation circuitry for improved waveform characteristics and beam stability.
Main Methods:
- Designed a sub-nano-PG utilizing avalanche transistors.
- Incorporated a printed circuit board with a tapered impedance discharge structure.
- Included a compensation inductor to refine the output waveform.
Main Results:
- The sub-nano-PG successfully generated a -757 V pulse.
- Achieved a pulse width of 511 picoseconds (full width at half-maximum).
- Demonstrated beam current stability better than 1.6% at 1 A during experiments.
Conclusions:
- The developed sub-nano-PG meets the stringent design requirements of the HALF.
- The optimized design, including the discharge structure and compensation inductor, enhances pulse quality.
- The sub-nano-PG is suitable for advanced accelerator applications requiring high-precision electron beam manipulation.
