In-vacuum undulators of SPring-8

Area of Science:

• Synchrotron Radiation Technology
• Particle Accelerators

Background:

• SPring-8 utilizes in-vacuum undulators as primary insertion devices.
• Standard undulators feature a 32 mm period and 8 mm minimum gap.

Purpose of the Study:

• To detail the magnetic field correction, vacuum system, and commissioning of SPring-8 in-vacuum undulators.
• To report on the successful operation of installed undulators.

Main Methods:

• Magnetic field measurement and correction techniques.
• Vacuum system design and performance evaluation.
• Commissioning procedures for in-vacuum undulators.

Main Results:

• Three standard in-vacuum undulators are installed and operating without issues.
• The fundamental radiation energy spans from 5.2 to 18.5 keV.

Conclusions:

• The implemented magnetic field correction and vacuum systems ensure reliable undulator performance.
• The commissioning process validates the operational readiness of the in-vacuum undulators for synchrotron radiation generation.