Study Of The Suppressor And Accelerator Supplies For The Tokamak Diagnostic Neutral Beam Source

This paper introduces the work principles of diagnostic neutral beam and hardware construction of the beam line. According to the requirements of the diagnostic neutral beam source, it also analyzed the power system of DNB.The paper pays more attention to the suppressor supply of the power system. By modeling and simulation of the vacuum tube, it comes to the characteristic curve of 3CX2500,and the curve is the criteria of the tube's application in the designing circuits. The paper presents the suppressor supply's feedback control circuits and also its fault detection circuit. As to the status and control signals, the control logic and interface board were designed.Accelerator supply is a very important one in the power system, for it concerns the safe operation of the whole system. That's why the paper narrates the accelerator supply which comes from the HV supply of ECRH. Corresponding protection methods and circuits are given in the paper for its safe operation.By many tests and improvements of the power system, we got the debugging waves with load, which were the basis of our following job.