|
|
 | |||
 |
||||
|
|
| |||
|
|
||||
EXPORTED TO: China, Plasma Laboratory, Modern Physics Dept., University of Science & Technology of China, Hefei
 |
8 – barrel pellet injector for HT-7 tokamak (IPAS, Hefei, China) is a compact gas gun for injection frozen hydrogen or deuterium pellets into plasma. The pellets are formed inside the barrels simultaneously by “in-situ” technique. However, every pellet can be injected independently at arbitrary time. All barrels are equipped by fast electromagnetic valves attached to a common heat exchanger cooled by helium vapor. A special gate valve is used to close all the barrels before fuel gas admission. Pellet injection cycle takes approximately 3 minutes. Diagnostic chamber of this injector is equipped by pulse flash and photo camera for pellet registration. |
|
Propellant gas |
helium |
|
Gas pressure |
7 MPa |
|
Pellet material |
hydrogen, deuterium |
|
Pellet size: |
2 barrels: Ø 1 mm × 1 mm (L) 2 barrels: Ø 1.2 mm × 1.2 mm (L) 4 barrels: Ø 1.5 mm × 1.5 mm (L) |
|
Pellet velocity |
1 ÷ 1.4 km/s |
|
Photo flash |
70 ns |
