Emittance and energy spread compensation in future synchrotron light sources

Article Instruments & Instrumentation

Design and commissioning of the new SSRF storage ring lattice with asymmetric optics

Xu Wu et al.

Summary: The lattice upgrade of the Shanghai Synchrotron Radiation Facility (SSRF) involved replacing bending magnets, constructing two DMB systems, and installing a superconducting wiggler. The symmetry of the storage ring was destroyed, necessitating modifications to the global optics. The lattice design matched the new elements and achieved sufficient dynamic aperture and energy acceptance through elaborate design and optimization.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2022)

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Article Physics, Nuclear

Suppression of emittance variation in extremely low emittance light source storage rings

Toshihiko Hiraiwa et al.

Summary: A passive method based on optimized quasiachromatic condition effectively suppresses emittance variation during the independent tuning of insertion devices, which is crucial for conducting precise experiments.

PHYSICAL REVIEW ACCELERATORS AND BEAMS (2022)

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Article Nuclear Science & Technology

Feedforward compensation of the insertion devices effects in the SSRF storage ring

Xin-Zhong Liu et al.

Summary: In this study, an ID orbit feedforward compensation system based on a response matrix using corrector coils was developed, and it was successfully applied to all commissioned IDs in the SSRF storage ring, achieving effective orbit distortion compensation. Optical and coupling feedforward systems were also developed, further optimizing the system performance through the installation of quadrupole and skew quadrupole magnets.

NUCLEAR SCIENCE AND TECHNIQUES (2022)

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Article Physics, Nuclear

Emittance and energy spread compensation for current and future low emittance synchrotron light sources

D. Hidas et al.

Summary: This paper presents an analysis of the behavior of emittance, energy spread, and radiated power in relation to active insertion devices in NSLS-II operations. It compares the spectra of radiated power and analytical values of emittance to measurements by NSLS-II online diagnostics, and investigates a conceptual design for a compensation wiggler to maintain constant emittance or energy spread.

PHYSICAL REVIEW ACCELERATORS AND BEAMS (2021)

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Review Multidisciplinary Sciences