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Related Experiment Video

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An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
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Vacuum-compatible pulse selector for free-electron laser.

Togo Kudo1, Toko Hirono, Mitsuru Nagasono

  • 1SPring-8/Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.

The Review of Scientific Instruments
|October 2, 2009
PubMed
Summary
This summary is machine-generated.

We created a vacuum-compatible pulse selector for free-electron lasers. This device precisely selects individual pulses from a continuous beam, enhancing experimental control and data quality.

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Area of Science:

  • Physics
  • Accelerator Science
  • Laser Technology

Background:

  • Free-electron lasers (FELs) produce high-intensity, tunable radiation.
  • Controlling the timing and selection of individual pulses from FELs is crucial for advanced experiments.
  • Existing pulse selection methods may have limitations in vacuum environments or repetition rate.

Purpose of the Study:

  • To develop and demonstrate a novel vacuum-compatible pulse selector for free-electron laser applications.
  • To enable precise selection of specific pulses from a continuous pulse train.
  • To enhance the flexibility and utility of FEL facilities like SPring-8 Compact SASE Source.

Main Methods:

  • Designed and constructed a vacuum-compatible rotating cylinder with eight apertures.
  • Implemented a closed-loop stepping motor system with magnetic coupling for precise rotation control.
  • Utilized a field-programmable gate array (FPGA) for synchronization with the accelerator trigger signal.
  • Tested the system at a maximum repetition rate of 60 Hz.

Main Results:

  • Successfully developed a functional vacuum-compatible pulse selector.
  • Demonstrated the ability to select specific pulses from a continuous pulse train.
  • Achieved synchronization with the accelerator trigger signal up to 60 Hz.

Conclusions:

  • The developed pulse selector is effective for selecting individual pulses from FELs in a vacuum.
  • This technology enhances experimental capabilities by providing precise temporal control over FEL pulses.
  • The system is suitable for integration with existing FEL facilities, improving their operational flexibility.