# SAGA Light Source

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Particle accelerator

SAGA Light Source General properties Accelerator type Synchrotron light source Beam type electrons Target type Light source Beam properties Maximum energy 1.4 GeV Physical properties Circumference 75.6 metres (248 ft) Location Tosu, Saga, Japan Coordinates 33°24′11″N 130°30′41″E / 33.40305°N 130.51149°E / 33.40305; 130.51149 Dates of operation 2004–present

**SAGA Light Source** (**SAGA-LS**) is a [synchrotron radiation](/source/Synchrotron_radiation) facility at the Kyushu Synchrotron Light Research Center (佐賀県立九州シンクロトロン光研究センター, *Saga kenritsu Kyūshū shinkurotoron-kō kenkyū sentā*) located in the [Tosu](/source/Tosu%2C_Saga), [Saga prefecture](/source/Saga_prefecture), Japan. It is operated by the local government.[1]

## History

The design of the facility was finalized in March 2001 and construction started in fall 2001. Synchrotron commissioning started in 2004 and the facility was opened up to external users in 2006.[2]

## Design and Research

SAGA-LS is a third-generation synchrotron source. It has a medium-sized ring with a circumference of 75.6 m. The storage energy is 1.4 GeV and beam current 300 mA. As of 2025, there are eleven beam lines in operation, including two udulators and two superconducting wigglers.[1]

Following almost 20 years of service, large scale maintenance of the machine equipment is carried out 2023 to 2027.[1]

## See also

- [List of synchrotron radiation facilities](/source/List_of_synchrotron_radiation_facilities)

- [Saga University](/source/Saga_University)

## References

1. ^ [***a***](#cite_ref-takeda2025_1-0) [***b***](#cite_ref-takeda2025_1-1) [***c***](#cite_ref-takeda2025_1-2) Takeda, Harunobu; Kaneyasu, Tstsuo; Takabayashi, Yuichi; Iwasaki, Yoshitaka (2025). ["Twenty years of operation of the SAGA Light Source"](https://iopscience.iop.org/article/10.1088/1742-6596/3010/1/012013). *[Journal of Physics: Conference Series](/source/Journal_of_Physics%3A_Conference_Series)*. **3010** 012013. IOP Publishing. [doi](/source/Doi_(identifier)):[10.1088/1742-6596/3010/1/012013](https://doi.org/10.1088%2F1742-6596%2F3010%2F1%2F012013).

1. **[^](#cite_ref-2)** ["About SAGA Light Source (SAGA-LS)"](http://www.slc.saga-u.ac.jp/english/about/). *www.saga-u.ac.jp/*. [Saga University](/source/Saga_University). Retrieved January 16, 2026.

## External links

- [Official website (Japanese)](https://www.saga-ls.jp/)

- [English website](http://www.slc.saga-u.ac.jp/english/)

v t e Synchrotron radiation facilities Storage ring Africa African Light Source (AfLS) Americas Sirius CLS ALS APS CAMD CHESS NSLS-II SRC SSRL SURF-III Asia BSRF [zh] HEPS NSRL [zh] HLS [zh] HALS [zh] SSRF Indus 2 ILSF [fa] AichiSR [ja] HiSOR NanoTerasu [ja] Photon Factory Rits SRC SAGA-LS SPring-8 NewSUBARU [ja] UVSOR [ja] SESAME PAL-II [kr] SSLS NSRRC Taiwan Light Source Taiwan Photon Source SPS [ru] Europe CANDLE ASTRID2 ESRF SOLEIL BESSY-II DELTA [de] DESY DESY DORIS-III PETRA-III ELSA [de] KARA MLS [de] DAFNE-Light ELETTRA Solaris SIBIR-2 SKIF [ru] TSRC [ru] VEPP-4 [ru] ALBA MAX IV SLS Diamond Light Source SRS Oceania Australian Synchrotron Free electron laser XFEL SHINE FLASH EuXFEL FERMI SACLA PAL XFEL [kr] SwissFEL LCLS-II others DCLS CLIO FELBE [de] FHI FEL iFEL FELSUT FELIX TARLA Novosibirsk FEL [ru] DFELL ITST JLab Keck FEL Storage ring light sources with electron energy >2.0Gev are highlighted in bold. Closed or decommissioned facilities are marked in italic.

Authority control databases ISNI

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