JP3172136B2 - Method and apparatus for adjusting insertion light source of synchrotron radiation light generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchrotron radiation light generator, such as an accelerator, provided with an insertion light source. A radiation light user operates the insertion light source to emit radiation emitted from the insertion light source. The present invention relates to a method and apparatus for adjusting an insertion light source of a synchrotron radiation light generator for directly adjusting light.

[0002]

2. Description of the Related Art As shown in FIG. 1, a bending section 12 having a number of bending magnets (not shown) and a beam port 14, and connecting the bending sections 12, for example, an insertion light source 22 and a Q for phase correction. Magnet 24,
A synchrotron radiation light generator (also referred to as a radiation light source) configured by an accelerator 8 having a beam duct 10 that forms a circular electron trajectory (referred to as a synchrotron ring) composed of a linear portion 20 including a steerer magnet 26 and the like. )It has been known. The inside of the beam duct 10 is evacuated, and the radiation 16 extracted from the beam port 14 is used for experiments and the like.

As shown in FIG. 2, the Q magnet 24 includes four magnet rows 25 arranged vertically above and below the beam duct 10, and a gap between the magnet row 25 and the beam duct 10. And the beam direction position can be adjusted as shown in FIG.

In such a radiation source, to change the property of the radiation 16 extracted from the beam port 14, the gap width and phase of the magnet row 25 of the insertion light source 22 inserted in the linear portion of the radiation source are adjusted. The magnetic field on the electron orbit is changed.

However, correction of the electron trajectory requires specialized knowledge of the accelerator 8 constituting the radiation light source. Therefore, most accelerator facilities are
As shown in the figure, the control system 3 provided in the central control room
0, and the operation of the insertion light source 22 has been requested from the beamline user 40 as a synchrotron radiation user to the accelerator staff 32 as a group of experts.

[0006]

However, when the magnetic field of the insertion light source 22 is changed, the current value of the correction magnet also needs to be adjusted each time, and continuous operations such as fine adjustment and initial adjustment are required. If necessary, the delay time is long, which is a troublesome task for the accelerator staff 32.

It is also conceivable to open the operation console of the accelerator 8 to the beamline user 40, but this is not a good method because other parameters of the accelerator may be affected.

[0008] The present invention has been made to solve the above-mentioned conventional problems, and is a radiation light source containing an insertion light source.
It is an object of the present invention to enable a radiation light user to directly adjust radiation light emitted from an insertion light source by operating a gap, a phase, and the like of an insertion light source while checking a beam without using an accelerator operator.

[0009]

SUMMARY OF THE INVENTION The present invention is a synchrotron radiation light generating apparatus provided with an insertion light source, wherein a radiation light user operates the insertion light source to emit radiation emitted from the insertion light source. In the method for adjusting the insertion light source of the synchrotron radiation light generator for direct adjustment, an operation request from the radiation light user is received, and the requested setting value and a sequence file to be executed as a result are determined as to whether they are correct, If it is correct, the above problem is solved by obtaining an adjustment value corresponding to the set value using a table and adjusting the insertion light source according to the obtained adjustment value.

Further, when there is no adjustment value in the table, a complementary approximation value is obtained by using an adjustment value in the vicinity, and the table is completed from the beginning by filling the table with the complementary approximation value. Even if it is not, it will be completed as you drive.

[0011] The present invention is also a synchrotron radiation light generating apparatus provided with an insertion light source, wherein a radiation light user operates the insertion light source to directly adjust the radiation light emitted from the insertion light source. In the insertion light source adjustment device of the synchrotron radiation light generation device, an operation request from a radiation light user is received, and it is determined whether a requested setting value or a sequence file to be executed as a result is correct. Accelerator operating means for obtaining an adjustment value corresponding to the set value using a table, storage means for storing the table, and execution means for adjusting the insertion light source according to the obtained adjustment value. is there.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

In this embodiment, the beamline user 40 directly inputs parameters and the like to the control system 30 in addition to the route for transmitting the parameters and the like to the accelerator staff 32 in the overall system as shown in FIG. The user tool 42 is provided.

FIG. 5 shows the configuration of the entire system including the user tool 42. In FIG. 5, 50 is, for example, RS
An operation request from the radiation user input from the user tool 42 is received via the 232C line 48, and it is determined whether the request setting value and the sequence file to be executed as a result are correct. An operation unit (accelerator operation means) 56 for obtaining an adjustment value corresponding to the above using a table is connected to the operation unit 50 via, for example, an Ethernet line 52 and a hub 54, and a file server (storage) in which the table is stored Means), 5
8 is, for example, a GPI, which is connected to the operation unit 50 via the Ethernet line 52 and the hub 54 and is determined by the operation unit 50.
An execution unit (execution means) connected to the accelerator 8 via the B line 60.

The file server 56 manages accelerator control programs and databases.

The execution unit 58 executes a program for controlling the accelerator, and sends and receives control commands to and from the insertion light source 22 through an interface.

The operation unit 50 includes a user tool 4
2 receives the adjustment command of the insertion light source 22 from the serial port connected thereto, converts the parameter into a control value by referring to the database in the file server 56, converts the parameter into a control command, converts the control command via the Ethernet line 52, and executes the execution unit 58 Send to

The user tool 42 is used for the operation of the beamline user 40, sends a command for adjusting the insertion light source via a serial port, and displays the received gap width data and the like on a console.

From the user tool 42 to the operation unit 50
FIG. 6 shows an example of the types of commands that can be transmitted to and the receive sent back from the operation unit 50 when the command is sent. In the figure, LU is a linear deflection undulator, EU is a circular deflection undulator, EU ST indicates a circular deflection undulator steerer magnet. Note that SY
In the case of an NTAX error, “ERROR” is returned.

FIG. 7 shows an example of the circular deflection undulator adjustment table stored in the file server 56. The adjustment table previously stores the insertion light source 22, the Q magnet 24, and the steerer magnet 2 for some points in a conventional manner.
6 is adjusted and data is written.

The operation of the embodiment will be described below with reference to the flowchart shown in FIG.

First, at step 100, the user tool 42
, The gap width G and the phase P of the magnet row 25 of the insertion light source 22 are designated. For example, when the gap width G of the circular deflection undulator magnet row is 30.2 mm and the phase is shifted so that the phase P is shifted by 200 °, the following command is transmitted to the operation unit 50.

H SET 30.2, 200

The operation unit 50, which has received the command from the user tool 42, separates the command into a command portion and a parameter portion in step 110, and the magnet row 25 for which the parameter is within the set range or the adjustment request is issued is enabled. It is checked whether or not the corresponding interpreted sequence file is executable from the user tool 42.

Next, the routine proceeds to step 120, where the index value I is calculated.

Originally, the adjustment value should be determined by deriving a relational expression between the gap width G and the phase P and the current value of the steerer magnet 26. However, it is difficult to derive the adjustment value and there is no actual record. In the embodiment, for example, an adjustment value obtained from an experiment is embedded in the adjustment table created in the CSV format, and a method of referring to the adjustment value is adopted. Specifically, the adjustment table shown in FIG. 7 is searched using the index value I obtained from the gap setting value G and the phase setting value P. For example, the step size of the adjustment value is changed according to the gap width G, and the index value I is expressed by the following equation (2) in a range where the gap width G is narrow; Can be calculated.

I = P + G * 360 (P = 1 ° to 360 °) (1) I = P + G * 3600 (P = 1 ° to 360 °) (2)

Gap width 0.1 mm / 30.0-39.
The index calculation process in the case of 9 mm, 1.0 mm / 40.0 mm to 200.0 mm is as shown in FIG. Gap width G = 35.5 mm, phase P = 200 °
In the case of (1), as shown in FIG.
Therefore, in step 130 using this value,
An adjustment table as shown in FIG. 7 is searched.

As a result of performing a search using the calculated index value, it is determined whether or not adjustment data exists in the corresponding record.
The determination is made in step 140. If the adjustment data does not exist, the process proceeds to step 150, where the index values before and after the data exist are obtained by linear complement approximation, and in step 160, a linear approximation complementing process for filling the table with the obtained values is executed. G = 35.5 m shown in italic letters in FIG.
FIG. 10 shows an example of the complementing process when m and P = 200 °.

If the conditions change significantly, or if better parameters are found later, the adjustment table is modified by making a change.

Then, the process proceeds to a step 170, where the data obtained from the adjustment table or the value obtained by the linear interpolation processing and the information set in the device database in the file server 56 are used to determine the device command as shown in FIG. A message according to the format is created, and the Q magnet 24 and the steerer magnet 26 of the insertion light source 22 are adjusted via the execution unit 58. For example, at the time of phase adjustment, 4
The magnet row 25 moves by the phase specified by the command with respect to the origin position.

In the present embodiment, when there is no adjustment value in the table, linear approximation is performed using the adjustment values in the vicinity, so that the approximation calculation is simple. Note that it is also possible to increase the approximation accuracy by using another approximation method.

In the above embodiment, the parameters for adjusting the insertion light source are the gap width and the phase. However, the type and number of parameters for adjusting the insertion light source are not limited to these, and the magnet row and the Other parameters can be used depending on the configuration of the steerer magnet and the like.

In the above-described embodiment, one adjustment table is used. However, a plurality of tables are prepared and switched for conditions such as improving the quality of light emitted from a specific beam port. It can also respond by doing.

[0035]

According to the present invention, a synchrotron radiation user with little knowledge of accelerator operation can operate the insertion light source directly from the user tool to adjust the synchrotron radiation without significantly affecting other parameters of the accelerator. In addition, since the trajectory can be corrected, the staff of the accelerator can be relieved from the hassle and the delay time can be eliminated for the synchrotron radiation user. This is particularly effective when the adjustment is performed continuously.

Further, since the set value is compared with the settable range and a confirmation is made when the sequence file is executed, malfunction can be prevented.

In particular, when a function for filling the correction parameter table by complementary approximation is provided, it is not necessary to fill the entire table from the beginning, and the table is filled as the vehicle is operated, and the accuracy is improved. .

[Brief description of the drawings]

FIG. 1 is a plan view showing the overall configuration of a synchrotron radiation light generator to which the present invention is applied.

FIG. 2 is a cross-sectional view showing a configuration of an insertion light source of the radiation light generating device.

FIG. 3 is a front view of the same.

FIG. 4 is a block diagram showing an overall configuration in an embodiment of the present invention.

FIG. 5 is a wiring diagram showing a specific system configuration.

FIG. 6 is a view showing an example of a command used in the user tool of the embodiment.

FIG. 7 shows an example of an insertion light source adjustment table.

FIG. 8 is a flowchart showing a basic processing procedure of the embodiment.

FIG. 9 is a flowchart showing an example of an index value calculation procedure.

FIG. 10 is a flowchart showing an example of a linear approximation complementing process.

FIG. 11 is a diagram for explaining a method of creating a device command.

[Explanation of symbols]

 Reference Signs List 8 accelerator (radiation light generating device) 10 beam duct 20 linear part 22 inserted light source 24 Q magnet 25 ... magnet array 26 ... steerer magnet 30 ... control system 32 ... accelerator staff 40 ... beamline user 42 ... user tool 48, 52, 60 ... line 50 ... operation unit 54 ... hub 56 ... file server 58 ... execution unit

Claims (3)

(57) [Claims] 1. A synchrotron radiation light generating device provided with an insertion light source, wherein a synchrotron radiation user operates the insertion light source to directly adjust the radiation light emitted from the insertion light source. In the method of adjusting the insertion light source of the light generator, accept operation requests from the user of the synchrotron radiation, determine whether the requested setting values and the sequence file to be executed as a result are correct, and if so, correspond to the setting values A method for adjusting the insertion light source of the synchrotron radiation light generator, wherein the adjustment value is obtained using a table, and the insertion light source is adjusted based on the obtained adjustment value. 2. The method for adjusting an insertion light source of a synchrotron radiation light generating apparatus according to claim 1, wherein when no adjustment value exists in said table, a complementary approximation value is obtained by using an adjustment value in the vicinity. A method for adjusting an insertion light source of a synchrotron radiation light generator, wherein a table is filled with the complementary approximate values. 3. A synchrotron radiation generating apparatus provided with an insertion light source, wherein a synchrotron radiation user operates the insertion light source to directly adjust radiation light emitted from the insertion light source. The insertion light source adjustment device of the light generation device accepts the operation request from the user of the radiation light, judges whether the requested setting value and the sequence file to be executed as a result are correct, and if it is correct, corresponds to the setting value. Accelerator operating means for obtaining an adjustment value to be performed using a table, storage means for storing the table, and execution means for adjusting the insertion light source based on the obtained adjustment value. Light source adjustment device for synchrotron radiation generator.