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A repetitive electron beam driver based on 6-stage linear transformer driver cavities
Peng Wang1, Fei Xiang1, Jie Tan1
1Key Laboratory of High Power Microwave Technology, Institute of Applied Electronics, CAEP, P.O. Box 919-1015, Mianyang 621900, China.
The Review of Scientific Instruments
|May 3, 2020
Summary
A new 6-stage Linear Transformer Driver (LTD) electron beam driver achieves 9.1 GW power. This repetitive driver operates stably at 25 Hz with low jitter, demonstrating high energy efficiency.
Area of Science:
- Physics
- Electrical Engineering
Background:
- High-power electron beam drivers are crucial for various scientific applications.
- Existing technologies face limitations in power, efficiency, and repetitive operation.
Purpose of the Study:
- To develop and characterize a novel repetitive electron beam driver using Linear Transformer Driver (LTD) technology.
- To investigate the energy efficiency and operational stability of the LTD system.
Main Methods:
- A 6-stage LTD electron beam driver was constructed, with each stage comprising two Blumlein pulse forming networks (BPFNs) and a laser-triggered spark switch.
- Linear Transformer (LT) technology was employed for voltage addition.
- Energy efficiency of individual components (BPFN, LT) and the overall system was measured.
- Repetitive operation was tested to assess stability and jitter.
Main Results:
- Individual LTD cavities demonstrated high energy efficiency, with BPFNs at 94.3% and LTs at 92.8%.
- The 6-stage driver achieved an output voltage of 740 kV, current of 12.3 kA, and peak power of 9.1 GW.
- Stable operation at 25 Hz for 20 seconds was achieved with a low timing jitter of approximately 1.7 ns.
Conclusions:
- The developed 6-stage LTD electron beam driver offers a high-power, efficient, and stable solution for repetitive beam generation.
- The results validate the effectiveness of LTD technology for advanced pulsed power applications.
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