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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
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Improving the magnet alignment of undulator systems by laser interferometer.
1Insertion Device and Laser Instrumentation Laboratory (IDLI), Devi Ahilya Vishwavidyalay, Indore, Madhya Pradesh 452001, India.
Journal of Synchrotron Radiation
|May 5, 2022
Summary
Undulator magnet misalignment causes errors in magnetic fields and period lengths. A new laser interferometer system precisely measures and corrects these angular offsets, improving undulator performance.
Area of Science:
- Physics
- Engineering
- Materials Science
Background:
- Undulators are critical components in particle accelerators and light sources.
- Intrinsic magnet misalignment introduces errors in magnetic fields and undulator performance.
- Accurate magnetic field integrals and phase error estimations are crucial for precision applications.
Purpose of the Study:
- To address intrinsic-type misalignment errors in undulator magnets.
- To develop a method for measuring and correcting angular offsets between magnets.
- To improve the precision of field integral and phase error estimates in undulators.
Main Methods:
- Designed a laser interferometer system to measure angular offsets.
- Implemented a method to fix magnets and minimize detected offsets.
- Analyzed the impact of localized errors on undulator segments.
Main Results:
- The laser interferometer effectively reads angular offsets between undulator magnets.
- The developed method allows for precise magnet alignment, minimizing errors.
- Correction of offsets leads to improved magnetic field homogeneity and period length accuracy.
Conclusions:
- Magnet misalignment is a significant source of error in undulators.
- The laser interferometer provides a precise solution for measuring and correcting these errors.
- This technique enhances the reliability of undulator performance for scientific applications.
