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Related Experiment Videos

SPring-8 in-vacuum undulator beam test at the ESRF.

T Hara1, T Tanaka, T Tanabe

  • 1SPring-8, Kamigori-cho, Ako-gun, Hyogo-ken 678-12, Japan.

Journal of Synchrotron Radiation
|July 21, 2004
PubMed
Summary

Testing the in-vacuum undulator at ESRF revealed heating issues. Resistive wall impedance significantly impacted performance, posing a critical challenge for in-vacuum undulator development.

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Area of Science:

  • Synchrotron Radiation Technology
  • Particle Accelerator Physics

Background:

  • The development of advanced insertion devices like in-vacuum undulators is crucial for enhancing synchrotron radiation sources.
  • SPring-8's in-vacuum hybrid undulator was tested at the European Synchrotron Radiation Facility (ESRF) prior to SPring-8's commissioning.

Purpose of the Study:

  • To evaluate the performance of the SPring-8 in-vacuum undulator during its initial beam test.
  • To assess the impact of the undulator on the electron beam characteristics.
  • To verify the integrity and functionality of the undulator's vacuum system.

Main Methods:

  • The in-vacuum hybrid undulator was installed and operated at the ESRF.
  • Beam diagnostics were employed to monitor the electron beam properties.

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  • The vacuum system performance within the undulator was closely monitored.

    • Main Results:

    • The beam test provided initial insights into the undulator's interaction with the electron beam.
    • A critical issue identified was the significant heating of the undulator components.
    • This heating was attributed to the resistive wall impedance of the undulator.

    Conclusions:

    • Resistive wall impedance presents a substantial challenge for the operation of in-vacuum undulators.
    • Further research and engineering solutions are necessary to mitigate heating effects for reliable undulator performance.