scholarly journals HIGH-VOLTAGE MODULATOR OF THE LINAC INJECTOR WITH VOLTAGE PULSE STABILIZATION

2019 ◽  
pp. 15-18
Author(s):  
R.A. Anokhin ◽  
S.N. Dubniuk ◽  
N.I. Gaponenko ◽  
A.P. Kobets ◽  
A.I. Kravchenko ◽  
...  

The high-voltage pulse modulator based on the modern semiconductor elements is described. The modulator is intended for use in the power supply system of LINAC helium ions injector and has the ability to smoothly adjust the amplitude (110…150 kV) and the pulse duration (0.5…1 ms). The use of a pulse-to-peak stabilization scheme, made on the basis of a parametric stabilizer with parallel switching of the load, made it possible to increase the accelerated current at the accelerator output by 2 times.

2020 ◽  
pp. 36-38
Author(s):  
R.A. Anokhin ◽  
S.N. Dubnyuk ◽  
N.І. Gaponenko ◽  
V.G. Zhuravlyov ◽  
A.V. Zhuravlyov ◽  
...  

This paper presents compact power supply system for the helium ion linac’s injector. The system consists of high-voltage modulator, power supplies of cathode filament, solenoid and arc modulator. It is designed on modern semi-conductor base. Using of the designed power supply system allowed to decrease the power consumption and to get rid of spurious capacitances and pickups. As a result of improving the continuous adjustment modulator and high-voltage pulse stabilization scheme, the accelerated beam current has increased twice.


2015 ◽  
Vol 9 (1) ◽  
pp. 253-262
Author(s):  
Liu Zhongfu ◽  
Zhang Junxing ◽  
Shi Lixin ◽  
Yang Yaning

As for the wide application of arc suppression coil to the grounding in neutral point of mine high voltage grid, grid leakage fault rules and harmonic characteristics of the neutral point grounding system through arc suppression coil are analyzed, the selective leakage protection program “zero-sequence voltage starts, fifth harmonics of grid zerosequence voltage and zero-sequence current are extracted for phase comparison” is proposed, and corresponding fifth harmonic extraction circuit and power direction discrimination circuit are designed. The experimental results show that the protective principle applies not only to the neutral point insulated power supply system, but also to the power supply system in which neutral point passes arc suppression coil, which can solve selective leakage protection problems under different neutral grounding ways, improving the reliability of selective leakage and guaranteeing the stability of the action value.


2010 ◽  
Vol 81 (12) ◽  
pp. 124703 ◽  
Author(s):  
M. C. Salvadori ◽  
F. S. Teixeira ◽  
W. W. R. Araújo ◽  
L. G. Sgubin ◽  
N. S. Sochugov ◽  
...  

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