JPH07192900A - Timing control device for particle accelerator - Google Patents

Abstract

PURPOSE:To facilitate the correction by separately setting a timing for renew of the operation reference value per each equipment, which is to be controlled, on the basis of a predetermined synchronous clock. CONSTITUTION:A reference clock generating unit 10 outputs the reference clock as a reference of timing of the all operation of an acceleration timing control system. Cycle of the clock A is used as a cycle for renewing the operation reference value E, and set at a cycle, with which a control power source 13 for receiving the reference values E1-E3 for operation and each equipment to be controlled can be operated. A system control system 8 controls the whole of a particle accelerator system, and inputs the start pulse B into a timing device 9 to command the starting of acceleration. A cycle circuit 11 takes the cycle of the clocks A, B, and outputs it to each delay means 21. Each delay means 21 outputs the signal for counting the clock, in which the delay time separately set is input, with a delay counter 22 and for turning on. An AND circuit 23 takes this signal and the logical product of the cycle clock to output pattern clocks D1-D3 for correction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a particle accelerator for accelerating and accumulating charged particles such as electrons, which is an apparatus for controlling the timing of a controlled device which needs to operate at high speed, high accuracy and high reproducibility. In particular, the present invention relates to a particle accelerator timing control device capable of minimizing the relative deviation between the controlled devices even when the controlled devices have different tracking characteristics.

[0002]

2. Description of the Related Art FIG. 6 is a schematic view showing a structural example of a particle accelerator of this type.

In FIG. 6, a charged particle injector 1 is composed of, for example, a charged particle source and a linear accelerator, and outputs charged particles having a predetermined kinetic energy, for example, a beam of electrons. The charged particle beam output from the charged particle injector 1 is electrostatically deflected by the electrostatic inflector 2,
It is incident on a predetermined orbit in the vacuum duct 4 of the acceleration / accumulation ring 3 from the connecting direction.

On the other hand, the accelerating / accumulating ring 3 is provided with a plurality of deflection electromagnets 5 at the positions shown in the figure, by which the charged particle beam incident from the charged particle injector 1 is deflected. Further, a quadrupole electromagnet 6 is arranged at the illustrated portion, and the charged particle beam is converged by this.

That is, the charged particle beam is controlled by the magnetic fields generated by these electromagnets 5 and 6 so as to be contained within a predetermined trajectory in the vacuum duct 4.

A hexapole electromagnet or the like is also installed in addition to the one shown in the figure, but it is omitted here for the sake of convenience of illustration and description.

On the other hand, a high-frequency electric field is preliminarily formed in the high-frequency accelerating device 7, so that the charged particle beam is given energy which is lost as an electromagnetic wave when it orbits a circular orbit or more. Then, if an energy equal to the lost energy is given, the charged particle beam orbits at a constant energy. If more energy is applied, the charged particle beam will be gradually accelerated.

When the charged particle beam is accelerated as described above, the charged particle beam gradually orbits the outside of a predetermined orbit, and finally hits the wall of the vacuum duct 4 and disappears.

Therefore, when accelerating by the high frequency accelerating device 7, it is necessary to intensify the magnetic fields of the deflection electromagnet 5 and the quadrupole electromagnet 6 in accordance with the acceleration so that the charged particle beam is controlled to fall within a predetermined orbit.

A conventional example of a timing control device for controlling the operation timing of an object to be controlled such as an accelerating device and an electromagnet when accelerating a charged particle beam will be described below.

FIG. 7 is a block diagram showing a structural example of a conventional timing control device for a particle accelerator of this type.

In FIG. 7, a system control system 8 is a control system for the entire particle accelerator system shown in FIG.
A start pulse corresponding to the acceleration start command is input to the timing control device 9.

On the other hand, in the timing control device 9, the reference clock generator 10 is generally composed of a crystal oscillator and a frequency divider, and the clock signal generated by the crystal oscillator is divided by the frequency divider to obtain a reference. Output clock.
The cycle of the reference clock is equal to the cycle of updating the operation reference value for the control target device, which will be described later, and is determined from the cycle in which the control target device can operate.

Further, the synchronizing circuit 11 synchronizes the reference clock from the reference clock generator 10 with the start pulse inputted from the system control system 8 and outputs the synchronizing clock. Then, this synchronous clock is fanned out from the timing control device 9, and the pattern memory 1
Input to 2.

On the other hand, the pattern memory 12 stores operation reference values for the controlled equipment in a time series, and the operation reference values are sequentially supplied to the controlled equipment every time the synchronous clock is input. Output to the control power supply 13 of.

Further, the control power source 13 is a high frequency accelerator 7
Power source, the deflection electromagnet 5 power source, the quadrupole electromagnet 6 power source, and the like, and the operation reference values thereof are an acceleration voltage reference value, a deflection electromagnet coil current reference value, a quadrupole electromagnet coil current reference value, and the like.

These operation reference values are output from the pattern memory 12 as digital signals for the sake of accuracy, converted into step-like analog signals in each control power supply 13, and further converted into ramp-like signals by a filter or the like. . Then, on the basis of this, by controlling the operation value of the controlled device such as the acceleration device and the electromagnet, the operation of each controlled device during acceleration is kept in step.

The hexapole electromagnet and the like are controlled in the same manner, but are omitted here for simplification of description.

As described above, since the conventional particle accelerator timing control device 9 only fan-outs the synchronous clock, the operation reference values from each pattern memory 12 to each control power supply 13 are synchronized with each other. Will be updated.

However, each control power supply 13 has conventionally performed feedback control, and the controlled devices such as the controlled acceleration device and electromagnet have different tracking characteristics. Therefore, a deviation occurs between the operation reference value and the actual operation value.

FIG. 8 is a diagram showing an example of the relationship between the operation reference value and the actual operation value.

In FIG. 8, R _A and R _B are operation reference values output from the pattern memory 12, r _A and r _B are operation reference values converted into a ramp shape in the control power supply 13, and x _A and x
_B represents the actual operating value of each controlled device. However, for simplification of description, only two control target devices A and B are shown here.

Since the synchronous clocks input to the pattern memories 12 corresponding to the control target devices A and B are exactly the same, as shown in FIG.
The operation reference values R _A and R _B from 2 are updated in synchronization with each other. Therefore, the operating values x _A and x _B of each controlled device are
Ideally, it changes so as to overlap the operation reference values r _A and r _B converted into a ramp shape.

However, in practice, as described above, the operation value is longer than the operation reference value by the delay times Δt _A and Δt _B.
Tracking delay ε _A , ε
_B occurs. In particular, focusing on the time point t, the controlled device A has already started up, but the controlled device B has hardly started up. And such a balance is
This hinders the charged particle beam from orbiting within a predetermined orbit.

Therefore, conventionally, since such an imbalance has reproducibility, the parameters of the feedback control of the control power supply 13 are adjusted and the data of the pattern memory 12 is regenerated while repeating the incidence and acceleration many times. Is adjusted to compensate.

However, both are very time-consuming and unreasonable.

In addition, at the initial stage of operation of the particle accelerator system, it may be necessary to change the time required to accelerate the charged particle beam for the purpose of collecting detailed operation data. At this time, in the conventional timing control device 9, it is necessary to change the cycle of the reference clock A or change the operation reference value data of the pattern memory 12, and these operations are troublesome. .

[0028]

As described above, in the conventional timing control device for the particle accelerator, not only the correction cannot be easily performed for a plurality of control target devices having different tracking characteristics, but also the acceleration cannot be performed. There is a problem that the time required cannot be easily changed.

The object of the present invention is to make it possible to easily correct a plurality of control target devices having different tracking characteristics and to easily change the time required for acceleration, which is extremely reliable. It is to provide a timing control device for a particle accelerator.

[0030]

In order to achieve the above object, first, in the invention according to claim 1, an accelerator for accelerating a charged particle beam incident from a charged particle injector to a predetermined energy. And a particle accelerator consisting of an acceleration / accumulation ring equipped with an electromagnet for deflecting / converging the charged particle beam so as to orbit a predetermined orbit, in a particle accelerator for controlling the operation of a plurality of controlled devices for acceleration. In the timing control device, a reference clock generating unit that outputs a reference clock that serves as a reference of timing for updating operation reference values of a plurality of control target devices related to acceleration, a reference clock output from the reference clock generating unit, and start acceleration. In synchronization with the start pulse shown,
A delay that is provided in the same number as the synchronization means that outputs the synchronization clock and the control target equipment, and the timing for updating the operation reference value can be set independently for each control target equipment with reference to the synchronization clock output from the synchronization means. And means.

According to a second aspect of the invention, in the particle accelerator timing control device according to the first aspect, a clock provided in correspondence with each delay means and output from the corresponding delay means is used as an operation reference. The frequency dividing means is added to the value updating cycle.

Further, in the invention according to claim 3, in the timing control device for a particle accelerator according to claim 2, each frequency dividing means is provided with a function capable of arbitrarily switching the frequency dividing ratio.

[0033]

Therefore, in the particle accelerator timing control apparatus according to the first aspect of the present invention, the reference clock generating means is used as a reference clock for updating the operation reference values of a plurality of controlled devices for acceleration. Is output. The cycle of the reference clock is equal to the cycle of updating the operation reference value, as described above.

Then, the synchronizing means synchronizes the reference clock with the start pulse indicating the start of acceleration, and outputs the synchronizing clock. This synchronous clock is input to the delay means provided in the same number as the controlled devices. Each delay means counts a delay time set independently in advance with reference to the synchronous clock, and then outputs the synchronous clock. Then, the delayed synchronous clock is output from the timing control device and input to the pattern memory.

As described above, the synchronous clocks each delayed independently are input to the pattern memory to update the operation reference value, so that the rising timing of the operation reference value to each controlled device is used as a reference. The resolution of the clock cycle can be set independently.

That is, the rise of the operation reference value to the controlled object equipment having the slow followability can be made earlier than that of the quick followability, and the relative unbalance of the followability can be corrected by the timing control device. You can

On the other hand, in the particle accelerator timing control device according to the second aspect of the present invention, the synchronization of the reference clock output by the reference clock generating means is set sufficiently faster than the cycle of updating the operation reference value. Similar to the case of claim 1, the delay is added in synchronization. Then, the delayed synchronous clock is frequency-divided by the frequency dividing means up to the cycle of updating the operation reference value, and is output to the pattern memory.

As described above, by counting the delay time based on the fast synchronous clock before frequency division, the delay time can be set with a finer resolution than the synchronization of the update of the operation reference value.

That is, it is possible to more accurately correct the imbalance of followability.

Further, in the particle accelerator timing control device of the invention according to claim 3, the frequency dividing ratio of the frequency dividing means added in the above-mentioned claim 2 can be arbitrarily switched, so that the operation reference value of You can change the update cycle.

That is, if the frequency division ratio is made larger, the operation reference value update cycle becomes longer, and if the frequency division ratio is made smaller, the operation reference value update cycle becomes shorter.

By using this, the time required for acceleration can be adjusted.

[0043]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

First, one embodiment of the particle accelerator timing control device according to the first aspect of the present invention will be described.

FIG. 1 is a block diagram showing an example of the entire structure of a particle accelerator timing control device according to the first aspect of the present invention. The same parts as those in FIG. 7 are designated by the same reference numerals.

That is, as shown in FIG. 1, the particle accelerator timing control device 9 of the present embodiment comprises a reference clock generator 10, a synchronizing circuit 11, and a delay means 21.

Here, the reference clock generator 10 is composed of, for example, a crystal oscillator and a frequency divider, and divides the clock signal generated by the crystal oscillator by the frequency divider to output the reference clock A. .

The synchronizing circuit 11 synchronizes the reference clock A output from the reference clock generator 1 and the start pulse B indicating the start of acceleration from the system control system 8 and outputs the synchronizing clock C. Is.

Further, as shown in FIG. 1, the delay means 21 is provided in the same number as the control target devices, and the delay counter 2 is provided.
2 and a logical product (AND) circuit 23.

The delay counter 22 counts the synchronization clock C output from the synchronization circuit 11 by a predetermined number, and the AND circuit 23 outputs the synchronization clock C output from the synchronization circuit 11 and the delay counter 22. And the pattern clocks D _{1 to} D ₃ are output.

That is, the delay means 21 outputs the pattern clocks D _{1 to} D ₃ after the synchronization clock C is counted by the delay counter 22 by a predetermined number.

On the other hand, the pattern memory 12 to which the output from the timing control device 9 is input is provided for each controlled device.

In each pattern memory 12, the operation reference values E _{1 to} E ₃ of the corresponding controlled equipment are stored in time series, and each time the pattern clocks D _{1 to} D ₃ are input, the operation reference values E _{1 to} E ₃ are stored. The operation reference values E _{1 to} E ₃ are sequentially output.

The control power supply 13 is the pattern memory 1
Based on the operation reference values E _{1 to} E ₃ output from _No. 2, the operation value of each controlled device is controlled.

In the following description, for simplification of description, the control target devices in this embodiment are the high-frequency accelerating device 7, the deflection electromagnet 5, and the quadrupole electromagnet 6, and other control target devices related to acceleration. Will be omitted.

Next, the operation of the particle accelerator timing control device 9 of the present embodiment configured as described above will be described with reference to FIG.
It will be described with reference to the timing chart shown in FIG.

First, the reference clock generator 10 outputs a reference clock A which serves as a reference for the timing of all the operations of the acceleration timing control system shown in FIG.

In this case, in this embodiment, the reference clock A
The cycle of is used as it is as a cycle of updating the operation reference value E from the pattern memory 12. Therefore, the period is, the pattern memory 12 to output an operation reference value E ₁ to E _3, and the control power source 13 operates by receiving the operation reference value E ₁ to E _3, and may operate for each control target device It is set from the cycle.

On the other hand, the system control system 8 is a control system for the entire particle accelerator system including this timing control system,
A start pulse B that commands the start of acceleration is input to the timing control device 9.

Further, the synchronizing circuit 11 synchronizes the start pulse B with the reference clock A output from the reference clock generator 10, and as the synchronizing clock C, the delay means provided in the same number as the controlled devices. It outputs to 21.

Further, in each delay means 21, first, in the delay counter 22, the delay times t _{1 to} t ₃ which are set independently of each other in advance are compared with the above-mentioned synchronous clock C.
Is counted on the basis of. Then, each delay counter 22 outputs a signal that turns ON when it counts each delay time t _{1 to} t ₃ . Further, the logical product circuit 23 takes the logical product of this signal and the synchronous clock C to obtain the pattern clocks D _{1 to} D.
Output as ₃ .

In this case, each of the delay times t _{1 to} t ₃ is determined from the followability of the controlled device corresponding to each delay time.
Since the resolution of the synchronous clock C is counted, the resolution becomes equal to the cycle of the synchronous clock C, that is, the cycle of updating the operation reference values E _{1 to} E ₃ . Also, the delay time t ₁ ~
t ₃ is set to be larger as the corresponding control target device has faster followability, and is set to be smaller as to the slower followability.

Here, in the present embodiment, it is assumed that the high-frequency accelerator 7, the followability of each controlled device is increased in order from the quickest one.
The deflection electromagnet 5 and the quadrupole electromagnet 6 are used, and each delay time t _{1 to} t
₃ , t ₁ = 2 × reference clock period, t ₂ = 1 × reference clock period, and t ₃ = 0.

On the other hand, the pattern clocks D _{1 to} D ₃ output from the timing control device 9 are input to the corresponding pattern memories 12, and the pattern memory 12 follows the corresponding control power sources according to the pattern clocks D _{1 to} D _3. The operation reference values E _{1 to} E ₃ output to 13 are updated.
As a result, each control power supply 13 has the operation reference value E ₁ to
Based on E ₃ , the operation of each device to be controlled, that is, the accelerating voltage of the high frequency accelerating device 7, the coil current of the deflection electromagnet 5, the coil current of the quadrupole electromagnet 6 and the like are controlled.

As described above, the particle accelerator timing control device 9 of the present embodiment comprises the crystal oscillator and the frequency divider, and divides the clock signal generated by the crystal oscillator by the frequency divider into the reference clock. The reference clock generator 10 that outputs A, the reference clock A that is output from the reference clock generator 10, and the start pulse B that indicates the start of acceleration from the system control system 8 are synchronized and the synchronization clock C is output. The synchronization circuit 11, the delay counters 22 provided in the same number as the controlled devices, and counting the synchronization clock C output from the synchronization circuit 11 by a predetermined number, and the synchronization circuit 11
Pattern clocks D _{1 to} D are obtained by ANDing the synchronous clock C output from the delay counter 22 and the output from the delay counter 22.
_The delay means 21 is composed of an AND circuit 23 for outputting ₃ .

Therefore, it is possible to change the timing at which the update of the operation reference value for each control target device is started, with the update cycle as the resolution. That is, by delaying the start of the update of the operation reference value for the control target device having a fast trackability as compared with the one having a slow trackability, the relative difference in the trackability can be corrected. In other words, it becomes possible to easily perform correction on a plurality of control target devices having different tracking characteristics.

FIG. 3 is a diagram showing an example of the relationship between the operation reference value and the actual operation value in this embodiment. Note that FIG.
In order to simplify the description, only the high-frequency accelerator 7 and the bending electromagnet 5 are shown.

In FIG. 3, pattern clocks D ₁ and D
_2, FIG. 1, the pattern clock D _1, D ₂ of FIG. 2, operation reference value E _1, E ₂ respectively correspond to the operation reference value E _1, E ₂ of Figure 1. Further, r ₁ and r ₂ indicate the operation reference values converted into a ramp shape in each control power supply 13, and x ₁ and x ₂ indicate the respective actual operation values. Further, r ₂ ′ is an apparent operation reference value of the deflection electromagnet 5 when the high frequency accelerator 7 is used as a reference. The delay set value t _1, t _2, the delay set value t ₁ of FIG. 2,
Corresponds to t ₂ .

That is, in the present embodiment, since the high-frequency accelerator 7 has faster followability, the start of updating the operation reference value E ₁ for the high-frequency accelerator 7 is delayed. As a result, the apparent movement reference value r ₂ ′ for the deflection electromagnet 5 having a slow followability lags behind the actual movement reference value r _{2 and} it is as if the followability was increased. That is, the apparent tracking deviation ε ₂ ′ and the delay time Δt ₂ ′ are also
It is significantly improved over the actual tracking deviation ε ₂ and the delay time Δt ₂ .

Further, the imbalance that the high-frequency accelerating device 7 having a fast trackability is not started but the deflection electromagnet 5 having a slow trackability is not started is also improved.

Next, an embodiment of the timing control device for the particle accelerator according to the inventions of claims 2 and 3 will be described.

FIG. 4 is a block diagram showing an example of the overall configuration of a particle accelerator timing control device according to the inventions of claims 2 and 3, and the same parts as those in FIG. Is omitted and only different parts will be described here.

That is, as shown in FIG. 4, the timing control device 9 for the particle accelerator of this embodiment is provided with a frequency divider 24 as one component thereof in addition to the timing control device 9 in the embodiment of FIG. 1 described above. It has been configured.

As shown in FIG. 4, the frequency divider 24 is provided after each delay means 21 and divides the delay synchronizing clocks C ₁ ′ to C ₃ ′ output from the corresponding delay means 21. Then, the pattern clocks D _{1 to} D ₃ are output, and the frequency division ratio can be arbitrarily set.

In the following description, for simplification of the description, in the present embodiment as well, as in the case of the embodiment of FIG. 1, the number of control target devices is three, and the other control target devices are omitted. .

Next, the operation of the particle accelerator timing control device 9 of the present embodiment configured as described above will be described with reference to FIG.
It will be described with reference to the timing chart shown in FIG.

First, the reference clock generator 10 outputs a reference clock A which serves as a reference for the timing of all the operations of the acceleration timing control system shown in FIG.

In this case, in this embodiment, the reference clock A
Is the resolution of correction of the followability of the control target device, and is set to 1/10 of the update cycle of the operation reference values E _{1 to} E ₃ here. Incidentally, the update cycle of operation reference value E ₁ to E ₃ are determined in the same manner as in Example FIG 1.

On the other hand, the system control system 8 is a control system for the entire particle accelerator system including this timing control system,
A start pulse B that commands the start of acceleration is input to the timing control device 9.

Further, the synchronizing circuit 11 synchronizes the start pulse B from the system control system 8 with the reference clock A, as in the case of the embodiment of FIG.
Is output to each delay means 21.

Further, also in each delay means 21, as in the case of the above-mentioned embodiment of FIG. 1, the delay synchronization clocks C ₁ ′ to C ₁ ′ to C ₃ ′ are set with delay times t _{1 to} t ₃ preset in the delay counter 22. Output C ₃ ′.

In this case, the resolution of the delay times t _{1 to} t ₃ is the cycle of the clock which the delay counter 22 uses as a reference, and therefore, here, ₁ of the update cycle of the operation reference values E _{1 to} E ₃ is used.
It is 1/0. Also, the delay synchronization clock C ₁ ′-
The cycle of C ₃ ′ is also ₁ of the update cycle of the operation reference values E _{1 to} E _3.
It is 1/0.

Furthermore, the delay synchronization clocks C ₁ ′ to C ₃ ′ output from each delay means 21 are input to the frequency divider 24 and have a period of 10 times, that is, the operation reference values E _{1 to} E _3.
Of the pattern clocks D _{1 to} D ₃
Is output as.

As described above, the particle accelerator timing control device 9 of the present embodiment comprises the crystal oscillator and the frequency divider, and divides the clock signal generated by the crystal oscillator by the frequency divider into the reference clock. A reference clock generator 10 that outputs A, a reference clock A that is output from the reference clock generator 1, and a start pulse B that indicates the start of acceleration from the system control system 8 are synchronized, and a synchronization clock C is output. The synchronization circuit 11, the delay counters 22 provided in the same number as the controlled devices, and counting the synchronization clock C output from the synchronization circuit 11 by a predetermined number, and the synchronization circuit 11
Pattern clocks D _{1 to} D are obtained by ANDing the synchronous clock C output from the delay counter 22 and the output from the delay counter 22.
_A delay unit 21 including an AND circuit 23 that outputs ₃ ;
The delay synchronizing clocks C ₁ ′ to C ₃ ′ provided corresponding to each delay means 21 are frequency-divided to output pattern clocks D _{1 to} D ₃ , and the frequency division is performed. The frequency divider 24 is capable of arbitrarily setting the ratio.

Therefore, the start timing of each pattern memory D _{1 to} D ₃ can be set with a finer resolution than the update cycle of the operation reference values E _{1 to} E ₃ . That is, since the rising timing of each control target device can be set more finely, more confidential correction can be performed as compared with the case of the embodiment of FIG. In other words, it becomes possible to more easily perform the correction on a plurality of control target devices having different tracking characteristics.

Further, since the frequency division ratio of the frequency divider 24 can be arbitrarily set, it is necessary to accelerate the beam without rewriting the data in the pattern memory 12 or changing the cycle of the reference clock A. You can change the time.
That is, if the frequency division ratio of the frequency divider 24 is increased, the cycle of the pattern clocks D _{1 to} D ₃ becomes longer, and the operation reference value E
_{1 to} E ₃ are updated slowly. Therefore, the time from the start to the end of acceleration becomes long, and during that time, detailed operation data of the accelerator can be collected.

Further, in the above configuration, the reference clock A output from the reference clock generator 10 is set to the operation reference value E ₁ to
Since it is faster than the update cycle of E ₃ , and the frequency divider 24 is added to divide the output of the delay means 21 into the update cycle of the operation reference values E _{1 to} E ₃ . Therefore, it becomes possible to more accurately correct the followability of each device.

Furthermore, since the frequency division ratio of the frequency divider 24 is arbitrarily switched, the time required for accelerating the charged particle beam in the particle accelerator can be easily changed.

[0089]

As described above, according to the present invention, the reference clock is synchronized with the start pulse indicating the start of acceleration, and the synchronization means is provided in the same number as the control target devices that output the synchronization clock. A delay unit that can independently set the timing for updating the operation reference value for each controlled device based on the synchronous clock, and is provided corresponding to each delay unit and is a clock output from each delay unit. By adding a frequency dividing means for dividing the operation reference value to the cycle of updating the operation reference value, and further comprising a function capable of arbitrarily switching the frequency dividing ratio, it is possible to control each device to be controlled with different followability. It is possible to provide a highly reliable timing control device for a particle accelerator that can easily perform correction and can easily change the time required for acceleration.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a timing control device for a particle accelerator according to the invention according to claim 1;

FIG. 2 is a timing chart diagram for explaining a detailed operation of the timing control device for the particle accelerator according to the embodiment.

FIG. 3 is a diagram for explaining the operation of the timing control system using the timing control device for the particle accelerator according to the embodiment.

FIG. 4 is a block diagram showing an embodiment of a timing control device for a particle accelerator according to the invention according to claim 2 and claim 3;

FIG. 5 is a timing chart diagram for explaining a detailed operation in the timing control device for the particle accelerator according to the embodiment.

FIG. 6 is a schematic diagram showing a configuration example of a particle accelerator.

FIG. 7 is a block diagram showing a configuration example of a conventional timing control device for a particle accelerator.

FIG. 8 is a diagram for explaining the operation of a timing control system using a conventional particle accelerator timing control device.

[Explanation of symbols]

1 ... Charged particle injector, 2 ... Electrostatic inflector, 3 ... Accelerating / accumulating ring, 4 ... Vacuum duct, 5 ... Bending electromagnet, 6
... quadrupole electromagnet, 7 ... high-frequency accelerator, 8 ... system control system, 9 ... timing control device, 10 ... reference clock generator, 11 ... synchronization circuit, 12 ... pattern memory, 13 ... control power supply, 21 ... delay means, 22 ... delay counter, 23 ...
AND circuit, 24 ... Divider, A ... Reference clock, B ... Start pulse, C ... Synchronous clock, C ₁ ′-
C ₃ '... delayed synchronous clock, D ₁ ~C ₃ ... pattern _{pulses, E 1 ~E 3, R A} , R B ... operation reference value, r ₁ ~
r ₃ , r _A , r _B ... Operation reference value converted into a ramp shape,
r ₂ ′ ... Apparent operation reference value, t _{1 to} t ₃ ... Delay time, Δt ₁ , Δt ₂ , Δt _A , Δt _B ... Delay time, Δt
₂ '... delay time _{apparent, x 1, x 2, x} A, x B ...
Actual operating value, ε ₁ , ε ₂ , ε _A , ε _B ... tracking deviation, ε
₂ '... Apparent tracking deviation.

Claims (3)

[Claims] 1. An accelerator for accelerating a charged particle beam incident from a charged particle injector to a predetermined energy, and an electromagnet for deflecting and converging the charged particle beam so as to orbit a predetermined orbit. In a particle accelerator consisting of an acceleration / accumulation ring equipped with, in a particle accelerator timing control device for controlling the operation of a plurality of controlled devices for acceleration, the timing of updating the operation reference value of the plurality of controlled devices for the acceleration A reference clock generating unit that outputs a reference clock that serves as a reference, a reference clock output from the reference clock generating unit, and a start pulse indicating the start of acceleration are synchronized,
The synchronization means for outputting a synchronization clock and the same number of the control target devices are provided, and the timing for updating the operation reference value is independently set for each control target device with reference to the synchronization clock output from the synchronization means. A particle accelerator timing control device comprising: a delay unit that can be set. 2. The timing controller for a particle accelerator according to claim 1, wherein a clock provided from each of the delay units and output from the corresponding delay unit is set to a cycle for updating the operation reference value. A timing control device for a particle accelerator, characterized in that a frequency dividing means is added. 3. The timing control device for a particle accelerator according to claim 2, wherein a function for arbitrarily switching a frequency division ratio is added to each of the frequency dividing means. Timing control device.