Gyrotrons
Toshiba Electron Tubes & Devices has engaged in the development of gyrotrons as an RF source for fusion plasma heating and measurement for many years.
Japan Atomic Energy Agency and Toshiba Electron Tubes & Devices have developed three key technologies for high-power quasi-CW gyrotrons: a depressed collector, a higher-order mode cavity, and a CVD diamond window. We have achieved short pulses (one millisecond) at 1.3 MW, and power levels of one megawatt for around ten seconds.
Moreover, Toshiba Electron Tubes & Devices was the first company to succeed in improving efficiency from 30% to 50% by collecting energy from the electron beam (collector fall-of-potential)
Features
- High efficiency
- Realizes more compact, low cost, and energy saving power supply and cooling units.
- Decreases undesirable X-rays
- Improved high-power performance thanks to planarization of the output distribution
- Uses our unique, long-life, high current density cathodes
- Outstanding reliability realized through use of advanced high-vacuum and high-voltage technologies derived from the development of various types of electron tubes
Applications
- Plasma heating in experimental nuclear fusion apparatus
- Plasma measurement in experimental nuclear fusion apparatus
- Ceramic sintering
Lineup
| Type | Frequency (GHz) |
Output Power (kW) |
Output Aperture (cm) |
Output Mode |
Weight (kg) |
Length (m) |
Magnet |
|---|---|---|---|---|---|---|---|
| E3955SU | 28 | 500 | 14 | TEM00 | 220 | 1.8 | E/M |
| E3988* | 77 | 1,000 | 8 | TEM00 | 820 | 3.1 | S/C |
| E3972 | 110 | 500 | 11.6 | TEM00 | 620 | 2.5 | S/C |
| E3990 | 110 | 1,000 | 8 | TEM00 | 820 | 3.08 | S/C |
| E3960 | 120 | 500 | 10.16 | TE12.2 | 190 | 2.35 | S/C |
| E3970 | 120 | 500 | 10.16 | TEM00 | 270 | 2.4 | S/C |
| E3980 | 168 | 500 | 14 | FLAT | 640 | 2.96 | S/C |
| E3993 | 170 | 1,000 | 8 | TEM00 | 820 | 3.1 | S/C |
♦Notes
- E/M : Electro Magnet S/C : Super Conducting Magnet
- *mark type is under development.
Chronological List of Products
| Type | Frequency (GHz) |
Output Power (kW) |
Output Aperture (cm) |
Output Mode |
Weight (kg) |
Length (m) |
Magnet |
|---|---|---|---|---|---|---|---|
| E3957 | 70 | 16 | 2.8 | TE02 | 45 | 1.6 | S/C |
| E3971 | 110 | 500 | 11.6 | TEM00 | 1,400 | 2.85 | S/C |
| E3974 | 170 | 500 | 11.6 | TEM00 | 640 | 2.96 | S/C |
| E3976 | 170 | 1,000 | 14 | FLAT | 635 | 2.86 | S/C |
| E3992 | 170 | 1,000 | 8 | TEM00 | 820 | 3.1 | S/C |
| E3965 | 384 | 1.3 | 2.8 | TE26 | 33 | 1.57 | S/C |
| E3973 | 576 | 0.8 | 2 | TE26 | 28 | 1.57 | S/C |
| E3983 | 874 | 0.6 | 2 | TE19 | 29 | 1.53 | S/C |
