A stable pulsed power supply for multi-beamline XFEL operations

Area of Science:

• Particle Accelerators
• High-Power Electronics
• X-ray Science

Background:

• X-ray Free Electron Laser (XFEL) facilities are single-user machines, necessitating multi-beamline operation for efficiency.
• Stable pulsed power supplies (PS) are critical for precise beam switching in XFEL facilities.
• Increasing demand for beamtime requires improved efficiency in XFEL operations.

Purpose of the Study:

• To develop a high-power pulsed power supply (PS) for the beam switching system at SACLA.
• To improve the efficiency and stability of XFEL operations through advanced PS technology.
• To accommodate the growing demand for user experiments at XFEL facilities.

Main Methods:

• Developed a high-power pulsed PS utilizing Silicon Carbide Metal-Oxide-Semiconductor Field-Effect Transistors (SiC MOSFETs) as switching elements.
• Integrated the PS into SACLA's beam switching system to drive a kicker magnet.
• Designed for high current stability, reduced size, and increased power efficiency.

Main Results:

• Achieved high current stability of 20 ppm (peak-to-peak) at a peak power of 0.24 MW.
• Successfully generated controllable, bipolar, and trapezoidal current waveforms at 60 Hz.
• Demonstrated the PS's capability to enhance beam switching precision and stability.

Conclusions:

• The developed SiC MOSFET-based pulsed PS significantly improves XFEL beam switching capabilities.
• This technology enhances operational efficiency and stability, crucial for multi-beamline XFEL facilities.
• Initial beam test results confirm the PS's effectiveness in supporting demanding XFEL experiments.