SU483933A1 - Device for synchronizing irradiation in impulsed accelerator - Google Patents

Description

one

The invention relates to a device for synchronizing a pulse of radiation of a pulsed accelerator with the position of a part or article making a periodic movement at a variable speed.

The known devices of similar purpose containing a rotation angle sensor, a delay unit and a delay control circuit n6 ensure sufficient accuracy in synchronizing the accelerator radiation pulse with the product position, since the delay is controlled only by the average speed of the part or product.

The purpose of the invention is to improve the accuracy of synchronization of the radiation of a pulsed accelerator with a given position of the product.

This is achieved by the fact that the delay control circuit contains a comparator and a speed sensor which is mounted on the disk rotation shaft and connected one branch to the input of the delay block, made on the basis of the saw voltage generator. The output of the generator is connected to the first input of the comparator, and the second branch - to the second input

comparator, the output of which is connected to the accelerator launch system.

FIG. 1 shows a circuit diagram of the proposed device; in fig. 2 - a disk with a slot.

The device contains a rotation angle sensor assembled on a photodiode D s transistor Tg; rotating slotted disc; overlapping beam of angle sensor; a delay unit made on the basis of a sawtooth voltage generator (C ,, T,., RIO); the delay control circuit, which includes a speed sensor and a comparator, implemented on the transistors T4, TS, TB, T and two electronic keys T ,, Tz.

The disk is rigidly connected to the rotating product, it is. In the initial state, the photodiode D1 is blocked by a disk, the keys TI and T3 are open and the capacitor Cj is discharged through the current-regulating transistor TZ and the electronic key Tj. The TS of the comparator TS is closed and the transistor 1 is open.

At the bases of the transistors Tj and T, a voltage is applied that is proportional to the instantaneous speed of rotation of the product.

On the rotating disk (Fig. 2) there is a slot along the circumference, through which the work of fragmentation and rotation is controlled from the incandescent bulb. The slit angle (along the circumference is determined based on the time required to fully charge the capacitor G at the maximum speed of the developing product.

The slotted disk is shifted along the movement of the product relative to the specified synchronization angle of the product with penetrating radiation by an angle (which, at maximum speed, is determined by the time required for the accelerator to start the accelerator pulse, and the time t needed to accelerate the accelerator parts by energy (t const).

At an angle pl + 1p2 to the arrival of the product at the desired angle, i.e. Until the accelerator has to generate a radiation pulse, the circuit is being prepared to work out the accelerator zigzag, Klush Tj and T are closed by a signal from the turn signal sensor. The capacitor Cj is charged before the supply voltage and the comparator produces a negative pulse, which is detected by the diode Dz.

At an angle, the keys controlled by the sensor from the angle sensor open, and the circuit adjusts when the accelerator is turned on. The generator's controlled delay generator Ci stops charging due to the open transistor T} and begins to discharge through the current-controlling transistor Ta according to a linear law.

At the same time, to ensure a constant delay from the moment the accelerator is turned on to

a fixed angle of rotation of the product with a voltage from a speed sensor provides a threshold for the operation of the comparator.

When comparing the capacitor voltages Cj with the voltage of the comparator tripping threshold, a pulse is triggered that triggers the accelerator. Capacitor Cj is discharged to zero.

On the next turn, the capacitor discharge current and the threshold voltage of the comparator triggering is set in proportion to the speed that the product receives immediately before the accelerator starts. The constant delay from the moment the accelerator is switched on is ensured by the proportionality of the discharge current of the capacitor and the trigger threshold of the comparator.

Claims (1)

Invention Formula A pulse accelerator radiation synchronization device including a rotation sensor, connected to a delay unit, a rotation shaft and a delay control circuit, characterized in that, in order to improve the synchronization accuracy of a pulse accelerator emission with a given position of the rotating disk, the control circuit delay contains 0 a comparator and a speed sensor, which is mounted on the disk rotation shaft and connected in one branch to the input of a delay unit, made on the basis of a sawtooth generator, the output of which is connected to 5 of the first entrance of the co-curator, and the second branch to the second input of the comparator, the output of which is connected to the accelerator launch system. ft : h 2