Green upgrading of SPring-8 to produce stable, ultrabrilliant hard X-ray beams

被引：1

作者：

Tanaka, Hitoshi ^{[1
]}

Watanabe, Takahiro ^{[1
,2
]}

Abe, Toshinori ^{[2
]}

Azumi, Noriyoshi ^{[2
]}

Aoki, Tsuyoshi ^{[2
]}

Dewa, Hideki ^{[2
]}

Fujita, Takahiro ^{[2
]}

Fukami, Kenji ^{[1
,2
]}

Fukui, Toru ^{[1
]}

Hara, Toru ^{[1
]}

Hiraiwa, Toshihiko ^{[1
]}

Imamura, Kei ^{[2
]}

Inagaki, Takahiro ^{[1
,2
]}

Iwai, Eito ^{[1
,2
]}

Kagamihata, Akihiro ^{[2
]}

Kawase, Morihiro ^{[2
]}

Kida, Yuichiro ^{[2
]}

Kondo, Chikara ^{[1
,2
]}

Maesaka, Hirokazu ^{[1
,2
]}

Magome, Tamotsu ^{[2
]}

Masaki, Mitsuhiro ^{[2
]}

Masuda, Takemasa ^{[2
]}

Matsubara, Shinichi ^{[2
]}

Matsui, Sakuo ^{[1
]}

Ohshima, Takashi ^{[1
,2
]}

Oishi, Masaya ^{[1
,2
]}

Seike, Takamitsu ^{[2
]}

Shoji, Masazumi ^{[1
,2
]}

Soutome, Kouichi ^{[1
,2
]}

Sugimoto, Takashi ^{[1
,2
]}

Suzuki, Shinji ^{[2
]}

Tajima, Minori ^{[2
]}

Takano, Shiro ^{[1
,2
]}

Tamura, Kazuhiro ^{[1
,2
]}

Tanaka, Takashi ^{[1
,2
]}

Taniuchi, Tsutomu ^{[2
]}

Taniuchi, Yukiko ^{[2
]}

Togawa, Kazuaki ^{[1
]}

Tomai, Takato ^{[2
]}

Ueda, Yosuke ^{[2
]}

Yamaguchi, Hiroshi ^{[2
]}

Yabashi, Makina ^{[1
,2
]}

Ishikawa, Tetsuya ^{[1
]}

机构：

[1] RIKEN SPring 8 Ctr, 1-1-1 Kouto, Sayo, Hyogo 6795148, Japan

[2] Japan Synchrotron Radiat Res Inst JASRI, 1-1-1 Kouto, Sayo, Hyogo 6795198, Japan

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2024年 / 31卷

关键词：

next generation light source; accelerator; low emittance; sustainability; low-emittance storage ring; FREE-ELECTRON LASER; BEAMLINE;

D O I：

10.1107/S1600577524008348

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

SPring-8-II is a major upgrade project of SPring-8 that was inaugurated in October 1997 as a third-generation synchrotron radiation light source. This upgrade project aims to achieve three goals simultaneously: achievement of excellent light source performance, refurbishment of aged systems, and significant reduction in power consumption for the entire facility. A small emittance of 50 pm rad will be achieved by (1) replacing the existing double-bend lattice structure with a five-bend achromat one, (2) lowering the stored beam energy from 8 to 6 GeV, (3) increasing the horizontal damping partition number from 1 to 1.3, and (4) enhancing horizontal radiation damping by installing damping wigglers in long straight sections. The use of short-period in-vacuum undulators allows ultrabrilliant X-rays to be provided while keeping a high-energy spectral range even at the reduced electron-beam energy of 6 GeV. To reduce power consumption, the dedicated, aged injector system has been shut down and the high-performance linear accelerator of SACLA, a compact X-ray free-electron laser (XFEL) facility, is used as the injector of the ring in a time-shared manner. This allows the simultaneous operation of XFEL experiments at SACLA and full/top-up injection of the electron beam into the ring. This paper overviews the concept of the SPring-8-II project, the system design of the light source and the details of the accelerator component design.

引用

页码：1420 / 1437

页数：18

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