W. According to the amount of propellant in the projectile launch process, the projectile projectile launching system uses a multi-stage vacuum diffusion chamber, a fast iet shut-off valve and two kinds of conduits to restrict the propellant to enter the discharge vacuum chamber. There is no large leakage in the entire launching system. Q calculation results show that this launching system leaves room for vacuum load considerations, the layout of the restricting flow conduits and the matching of the vacuum pump are reasonable, and it fully meets the requirements of the HL2A device tokamak discharge experiment.
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