11 Application of Accelerators and Storage Rings
769
separators, and experimental set-ups (ion traps, high-resolution spectrometers, etc.)
are not addressed here. However, storage rings and re- or post-accelerators are
included where they are part of the overall facility.
RIKEN Radioactive Isotope Beam Facility (RIBF)
The history of cyclotron accelerators at RIKEN Nishina Center, Wako, Japan, began
before World War II [216]. The era of heavy ion beams began in 1966 with a 160-cm
cyclotron. Work with radioactive ion beams began in 1986 when the RIKEN K540
Ring Cyclotron (RRC) [217] went into operation along with the Projectile Fragment
Separator (RIPS). A K70 AVF cyclotron was built for light ion injection [218] and
the existing variable-frequency linac (RILAC) [219] was used as injector for heavy
ions. The RILAC has been in operation since 1980 and has successfully accelerated
light ions to energies of 4 MeV/u and heavy ions to 0.8 MeV/u.
The RIKEN accelerator facility was expanded beginning in 1997 and became the
Radioactive Isotope Beam Facility (RIKEN RIBF). The aim of the expansion was
to improve experimental conditions for research with radioactive isotopes [220].
In the first phase of the expansion project, a new multi-stage acceleration system
was built based on the existing RIKEN accelerators RILAC/AVF and RRC. To
these were added three booster cyclotrons, the fixed-frequency Ring Cyclotron
fRC/K = 570 [221], the Intermediate Ring Cyclotron IRC/K = 980 [209], and
the Superconducting Ring Cyclotron SRC/K = 2600 [222]. Figure 11.46 shows a
schematic diagram of the facility, including the key parameters of the accelerator
stages. The main accelerator is the SRC, with six sector magnets. Figure 11.47
Fig. 11.46 Schematic diagram of the RIKEN RIBF showing the key parameters of the accelerator
stages (see article) [220]. The injectors RILAC, RILAC2, and AVF are used for different
acceleration modes of the four booster cyclotrons: RRC, fRC, IRC, and SRC. [Copyright ©, Y.
Yano, Cyclotrons’04, Tokyo, Japan, 18A1, jacow.org (2004)]
769
separators, and experimental set-ups (ion traps, high-resolution spectrometers, etc.)
are not addressed here. However, storage rings and re- or post-accelerators are
included where they are part of the overall facility.
RIKEN Radioactive Isotope Beam Facility (RIBF)
The history of cyclotron accelerators at RIKEN Nishina Center, Wako, Japan, began
before World War II [216]. The era of heavy ion beams began in 1966 with a 160-cm
cyclotron. Work with radioactive ion beams began in 1986 when the RIKEN K540
Ring Cyclotron (RRC) [217] went into operation along with the Projectile Fragment
Separator (RIPS). A K70 AVF cyclotron was built for light ion injection [218] and
the existing variable-frequency linac (RILAC) [219] was used as injector for heavy
ions. The RILAC has been in operation since 1980 and has successfully accelerated
light ions to energies of 4 MeV/u and heavy ions to 0.8 MeV/u.
The RIKEN accelerator facility was expanded beginning in 1997 and became the
Radioactive Isotope Beam Facility (RIKEN RIBF). The aim of the expansion was
to improve experimental conditions for research with radioactive isotopes [220].
In the first phase of the expansion project, a new multi-stage acceleration system
was built based on the existing RIKEN accelerators RILAC/AVF and RRC. To
these were added three booster cyclotrons, the fixed-frequency Ring Cyclotron
fRC/K = 570 [221], the Intermediate Ring Cyclotron IRC/K = 980 [209], and
the Superconducting Ring Cyclotron SRC/K = 2600 [222]. Figure 11.46 shows a
schematic diagram of the facility, including the key parameters of the accelerator
stages. The main accelerator is the SRC, with six sector magnets. Figure 11.47
Fig. 11.46 Schematic diagram of the RIKEN RIBF showing the key parameters of the accelerator
stages (see article) [220]. The injectors RILAC, RILAC2, and AVF are used for different
acceleration modes of the four booster cyclotrons: RRC, fRC, IRC, and SRC. [Copyright ©, Y.
Yano, Cyclotrons’04, Tokyo, Japan, 18A1, jacow.org (2004)]