SU356980A1 - PULSED POWER SUPPLY SYSTEM OF LINEAR ELECTRONIC ACCELERATOR ^ i'l!,;, »I 1 i '' - '' 5иА ^^„ ..,; - Google Patents

Description

This invention relates to accelerator technology.

A known system for pulsed powering a linear electron accelerator, comprising an accelerating tube or an inductor, or a high-frequency device included in the secondary circuit of a pulse transformer, a power source, a filter capacitor, a resonant charge inductor, a charge diode in the charging lines of the forming line, a thyratron in circuits of the discharge of the forming line through the primary winding of the transformer and the synchronizer in the control circuit of the thyratron.

A known pulse system is characterized by a considerable duration of the leading edge of pulses relative to the duration of the apex.

The proposed system makes it possible to shorten the pulse front duration and increase the average beam power.

For this, the forming line is connected via an additional winding of the pulse transformer and an additional thyratron to the filter capacitor, the grid of the additional thyratron is connected to the synchronizer, and B is the control circuit of the main discharge circuit of the thyratron.

FIG. 1 shows the scheme of the proposed device; in fig. 2 is a graph of the voltage at the output of the pulse transformer. Linear pulse power system

The electron accelerator consists of a klystron 1 connected to a pulse generator through a pulse transformer 2. The main winding of a pulse transformer through switching thyratron 3 is connected to the common wire, the output from the auxiliary winding of the transformer through thyratron 4 is connected to a potential plate of a capacitor 5 of the power source filter 6. The connection point of the thyratron 4 and capacitor 5 through the choke 7 of the resonant charge and the diode 8 is connected to the forming line 9. The forming line 9 is also connected to the common output of the additional and main primary windings of the pulse

transformer 2. The thyratron 3 grid is connected via delay line 10 to the synchronizer 11, and the thyratron 4 grid - directly to the synchronizer.

The proposed system works as follows

in a way.

In the initial position, the forming line 9 through the choke 7 and the diode 8 is charged from source 6 to twice the value of the supply voltage, resulting in a tiratron

At the time ti (see Fig. 2), the synchronizer 11 turns on the thyratron 4. From this moment on, the discharge of the forming line 9 begins along the circuit: the additional winding of the transformer 2 - the thyratron 4 - capacitor 5. At the cathode of the high-frequency device a positive polarity pulse with an amplitude of f / i.

At time tz, the pulse through the delay line enters the triggering of the switching thyratron 3. The thyratron is triggered and the forming line 9 is discharged through the main winding of the pulse transformer 2. A negative-polarity voltage pulse of amplitude f / i is formed at the cathode of the high-frequency device (see Fig. 2).

In the process of forming the front, the pulse voltage goes from positive polarity to negative along a steeper curve due to the fact that the core of the pulse transformer is magnetised by a positive current pulse before forming a negative pulse. FIG. Figure 2 shows the duration of the front D in the case of the application of pulsed magnetization (as is well known, the klystron begins to be excited only after the appearance of a negative voltage at its cathode). A / i is the pulse front duration received at the load with the thyratron off 4.

The ratio of the turns of the additional and main windings of the pulse transformer is chosen so that the amplitude of the pulse of positive polarity does not exceed the level allowed for this device.

Subject invention

A pulsed power system for a linear electron accelerator containing an accelerating tube or an inductor, or a high-frequency device included in the secondary circuit

pulse transformer, power supply, filter capacitor, resonant charge choke, charge diode in the charge circuit of the forming line, a thyratron in the discharge line of the forming line through the transformer primary winding and a synchronizer in the control circuit of the thyratron, characterized in that In order to increase the average power of the electron beam, the forming line is connected through an additional winding of a pulse transformer and an additional thyratron to the filter capacitor, and the grid of the additional thyratron connects ene with the synchronizer, and a control circuit thyratron main discharge circuit

delay line entered.