SU790136A1 - High-voltage pulse generator for supply of spark chambers - Google Patents

Description

The invention relates to high-voltage pulse technology and is intended to power the spark chambers used in experimental nuclear physics. High voltage pulse generators for feeding spark chambers are known. One of the known generators contains a discharge device, storage capacitors, and supply buses to the spark chamber. The disadvantage of this generator is the insufficient rise time of the high-voltage pulse. This disadvantage is explained by the fact that when using spark chambers with an electric capacitance of the order of (5 ± 10) 10 p and a gap of up to 2.5 cm, the pulse front is tightened. The closest technical solution to this invention is a high voltage pulse generator for powering spark chambers containing two parallel-connected epoxy resin capacitors, a switching bit and high-voltage input 2. The disadvantage of this generator is an insufficient range of operating voltages under the condition keeping the rise time of the high voltage pulse unchanged. The disadvantage is due to the significant inductance of the supply rails. The purpose of the invention is to expand the range of operating voltages while maintaining the rise time of the pulse. The goal is achieved by the fact that in a high voltage pulse generator to power spark chambers containing two parallel-connected capacitors filled with epoxy resin, a switching discharge and a high-voltage input, the capacitors are located symmetrically with respect to the plane passing through the discharge symmetry axis and the high-voltage input . FIG. (i and 2j show the design of the proposed high voltage pulse generator for powering spark chambers. The high voltage pulse generator for powering spark chambers includes a housing 1, while

insulator 2 serving as an earth bus for the generator, clamping screws 3 holding two epoxy blocks 4 with high-voltage capacitors 5 and high-voltage electrodes b and pulse electrodes connected to them

The capacitors are connected by fasteners 8, and the high-voltage input 10 and the electrode of the surge capacitor 11 are connected to them through the vacuum seals 9. The pickup threshold of the generator is established by moving the ground electrode 12. The connection. the generator with the spark chamber is carried out using contact springs 13 connected to the pulse electrode 7 of the capacitors 5,

The high-voltage pulse generator operates as follows.

After charging two high-voltage capacitors 5, a high-voltage input 10 enters the input of the ground electrode 12 and receives a control voltage pulse, which is applied to the discharge voltage 11. When the discharge voltage is triggered, the high-voltage capacitors 5 and the spark chamber occur in the circuit containing the discharge voltage 11 transition process. The total inductance of the whole circuit is also involved in this process.

The front of the voltage transient is determined mainly by the total inductance of the entire discharge circuit.

The main contribution to which is given by the inductance of the generator, but since the design of the generator is not large in size, its effect on the rise time is insignificant. The proposed generator provides an expansion of the range of operating voltages up to 30 kV with a spark chamber capacitance of up to 5500 pF (gap up to 2.5 cm) and the front of the output pulse of about 14 NS.

Claims (2)

1.Mes c G.A. Generation of powerful nanosecond pulses. M., Soviet Radio, 1974, p. 110. 2. Accepted for Japan 48-25141, 1973.