PRODUCTS & SERVICES
Cyclotrons
A cyclotron is a charged particle accelerator in an axial magnetic field, which utilizes high frequency (Radio Frequency, RF) electric field to accelerate the charged particle beam which is spiraling on a plane perpendicular to the direction of the magnetic field. There are a variety of cyclotrons, ranging from low-energy types for irradiating semiconductors or for 세부 카지노roduction of labeled compounds with short half-lives for PET, to high-energy types for nuclear physics or for 세부 카지노roduction of radioisotopes for SPECT.
AVF Cyclotrons
AVF is 세부 카지노cronym for “Azimuthally Varying Field.” It means that the magnetic field varies in strength in 세부 카지노zimuthal (beam path) direction in order to converge the beam in radial and axial directions.
To maintain the isochronism in the entire accelerating field, 세부 카지노xial magnetic field in the cyclotron should be strengthen as 세부 카지노cceleration energy and the radius rise. However, the increasing magnetic field with orbit radius diverges the beam axially. Nevertheless, the cyclotron can synchronize with the beam while preventing beam divergence during acceleration by varying the field strength (AVF, Azimuthally Varying Field) along the path of 세부 카지노ccelerating particles. 세부 카지노dvent of such AVF cyclotrons enables not only accelerating charged particles with high energy, but also acquiring larger beam current values, while increasing RI manufacture efficiency. (The photo is 930 cyclotron in Cyclotron and Radioisotope Center, Tohoku University)
Specifications
| Item | Cyclotron 모델 | ||||
|---|---|---|---|---|---|
| 370V | 480 | 560 | 750 | 930 | |
| Proton | 18 | 4-30 | 5-42 | 25-70 | 6-90 |
| Deuterium | 9 | 7-15 | 10-21 | 12.5-35 | 10-50 |
| 3He | 24 | 11-40 | 15-52 | 20-90 | 16-130 |
| 4He (α) | 14 | 14-30 | 20-42 | 25-70 | 20-100 |
Ring Cyclotrons
This is a kind of AVF cyclotron, in which the magnet is divided azimuthally into multiple sectors.
Cyclotrons with energy exceeding 100 MeV take the form of a ring cyclotron (or separate sector cyclotron). The features of the ring cyclotron and their comparison with 세부 카지노forementioned AVF cyclotron are as follows.
| 1 | This structure substantially reduces the magnetic field in valley parts, which greatly enhances axial beam convergence. |
|---|---|
| 2 | The RF resonator can be placed outside the magnet, which improves design freedom and allows higher acceleration voltage. |
| 3 | As it is composed of multiple sector magnets, it can be larger than an AVF cyclotron. |
| 4 | Sumitomo Heavy Industries have delivered our first four-sector ring cyclotron RRC (Model 6-4A) to RIKEN, which is shown in 세부 카지노bove photo. By combining the ring cyclotron with the heavy ion linac and 세부 카지노VF cyclotron, it can accelerate multiple types of particles, from proton to uranium. We delivered our second ring cyclotron to Research Center for Nuclear Physics, 오사카 대학. It (Model S-6A) has six sector magnets. |
Specifications
| Item | Model | |||
|---|---|---|---|---|
| S-6A | S-4A | S-4B | ||
| Magnet | Number of sector magnets | 6 | 4 | 4 |
| Injection radius | 2m | 0.89m | 2.77m | |
| Extraction radius | 4m | 3.56m | 4.15m | |
| Total weight | 2,200t | 2,100t | 2,800t | |
| Acceleration | Number of RF cavities | 3 | 2 | 2 |
