Design and operation of a fast electromagnetic inductive massive gas injection valve for NSTX-U

作者：Raman R^*; Jarboe T R; Nelson B A; Gerhardt S P; Lay W S; Plunkett G J

来源：Review of Scientific Instruments, 2014, 85(11): 11E801.

DOI：10.1063/1.4885545

Results from the operation of an electromagnetic valve, that does not incorporate ferromagnetic materials, are presented. Image currents induced on a conducting disc placed near a pancake solenoid cause it to move away from the solenoid and open the vacuum seal. A new and important design feature is the use of Lip Seals for the sliding piston. The pressure rise in the test chamber is measured directly using a fast time response Baratron gauge. The valve injects over 200 Torr l of nitrogen in less than 3 ms, which remains unchanged at moderate magnetic fields.

• 出版日期2014-11