Commissioning of a compact multibend achromat lattice: A new 3 GeV synchrotron radiation facility
Creators: name: Obara, Shuhei
name: Ueshima, Kota
name: Asaka, Takao
name: Hosaka, Yuji
name: Kan, Koichi
name: Nishimori, Nobuyuki
name: Aoki, Toshitaka
name: Asano, Hiroyuki
name: Haga, Koichi
name: Iba, Yuto
name: Ihara, Akira
name: Ito, Katsumasa
name: Iwashita, Taiki
name: Kadowaki, Masaya
name: Kanahama, Rento
name: Kobayashi, Hajime
name: Kobayashi, Hideki
name: Nishihara, Hideo
name: Nishikawa, Masaaki
name: Oikawa, Haruhiko
name: Saida, Ryota
name: Sakuraba, Keisuke
name: Sugimoto, Kento
name: Suzuki, Masahiro
name: Takahashi, Kouki
name: Takahashi, Shunya
name: Tanaka, Tatsuki
name: Tsuchiyama, Tsubasa
name: Yoshioka, Risa
name: Aoki, Tsuyoshi
name: Dewa, Hideki
name: Fujita, Takahiro
name: Kawase, Morihiro
name: Kiyomich, Akio
name: Hamano, Takashi
name: Masaki, Mitsuhiro
name: Masuda, Takemasa
name: Matsubara, Shinichi
name: Okada, Kensuke
name: Saji, Choji
name: Taniuchi, Tsutomu
name: Taniuchi, Yukiko
name: Ueda, Yosuke
name: Yamaguchi, Hiroshi
name: Yanagida, Kenichi
name: Fukami, Kenji
name: Hosoda, Naoyasu
name: Ishii, Miho
name: Itoga, Toshiro
name: Iwai, Eito
name: Magome, Tamotsu
name: Oishi, Masaya
name: Ohshima, Takashi
name: Kondo, Chikara
name: Sakurai, Tatsuyuki
name: Shoji, Masazumi
name: Sugimoto, Takashi
name: Takano, Shiro
name: Tamura, Kazuhiro
name: Watanabe, Takahiro
name: Tomai, Takato
name: Azumi, Noriyoshi
name: Inagaki, Takahiro
name: Maesaka, Hirokazu
name: Takahashi, Sunao
name: Tanaka, Takashi
name: Inoue, Shinobu
name: Kumazawa, Hirosuke
name: Moriya, Kazuki
name: Sakai, Kohei
name: Seno, Toshio
name: Sumitomo, Hiroshi
name: Takesako, Ryoichi
name: Tanaka, Shinichiro
name: Yamamoto, Ryo
name: Yokomachi, Kazutoshi
name: Yoshioka, Masamichi
name: Hara, Toru
name: Matsui, Sakuo
name: Hiraiwa, Toshihiko
name: Tanaka, Hitoshi
name: Ego, Hiroyasu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: NanoTerasu, a new 3 GeV synchrotron light source in Japan, began user operation in April 2024. It provides high-brilliance soft to tender X-rays and covers a wide spectral range from ultraviolet to tender X-rays. Its compact storage ring with a circumference of 349 m is based on a four-bend achromat lattice to provide two straight sections in each cell for insertion devices with a natural horizontal emittance of 1.14 nm rad, which is small enough for soft X-rays users. The NanoTerasu accelerator incorporates several innovative technologies, including a full-energy injector C-band linear accelerator with a length of 110 m, an in-vacuum off-axis injection system, a four-bend achromat with B-Q combined bending magnets, and a TM020 mode accelerating cavity with built-in higher-order-mode dampers in the storage ring. This paper presents the accelerator machine commissioning over a half-year period and our model-consistent ring optics correction. The first user operation with a stored beam current of 160 mA is also reported. We summarize the storage ring parameters obtained from the commissioning. This is helpful for estimating the effective optical properties of synchrotron radiation at NanoTerasu.
description: 30 pages, 24 figures, submitted to the journal