KR100328118B1 - Optically-alligned, vacuum x-ray spherical-crystal spectrometer for many bragg angle measurements - Google Patents

Abstract

The present invention relates to a vacuum X-ray spherical crystal spectroscope capable of precisely aligning many Bragg angles, and more particularly, to a vacuum x-ray spectrometer system using spherically-bent crystals for optical purposes. It can be applied to various Bragg angles, and the CCD camera can be used as a detector to obtain high measurement sensitivity and two-dimensional x-ray image, and also can be used in weak intensity x-ray environment, and optically accurate. A diagnostic vacuum x-ray crystal spectrometer that can be easily aligned.

The port 1 can be rotated to measure various Bragg angles, and the CCD camera 51 can be used as a detector to obtain high measurement sensitivity and two-dimensional x-ray image. It is a vacuum X-ray spherical crystal spectrometer that can be used to precisely align many Bragg angles in which the detector is configured to rotate in order to align in the tangential direction on the Ronan circle.

Description

VACUUM X-RAY SPHERICAL-CRYSTAL SPECTROMETER FOR MANY BRAGG ANGLE MEASUREMENTS}

The present invention relates to a vacuum X-ray spherical crystal spectroscope capable of precisely aligning many Bragg angles, and more particularly, to a vacuum x-ray spectrometer system using spherically-bent crystals for optical use. It can be applied to various Bragg angles, and it is possible to obtain high measurement sensitivity and two-dimensional x-ray image by using CCD camera as a detector, and also to use in weak intensity x-ray environment, and optically Diagnostic vacuum x-ray crystal spectroscopy with precise alignment.

In plasma experiments, the parameters to be measured vary. Among them, it is known that measuring the ion temperature is very important. Ion temperatures in fusion devices have long been used with x-ray crystal spectroscopy, and technology has made significant strides. However, applications in devices with relatively low x-ray intensities, measurements of one or more Bragg angles, and in this case can be optically precisely aligned, are difficult to measure in two-dimensional x-ray images There was this.

In other words, x-ray crystal spectroscopy is generally used to obtain the necessary information by spectroscopy on the detector the x-rays Bragg scattering on the surface of a cylindrically-bent crystal. In many cases, since they are used in high temperature fusion devices, the strength of x-rays is large enough, and most of the Bragg angles used are predetermined. Therefore, the conventional x-ray crystal spectroscopy system constitutes a system for x-ray measurement for one Bragg angle, and provides a multiwire proportional counter that is capable of low x-ray measurement sensitivity. Used as a detector. In addition, in spectroscopy, bellows was used to position the detector in the tangential direction on the Lowland circle.

However, a conventional x-ray crystal spectrometer having the above configuration, first, applies a system to the new Bragg angle when the measurement of more than one type of Bragg angle is required and optically There is a serious problem with precise alignment.

Secondly, the measurement of a case where weak intensity and long wavelength x-rays are generated due to relatively low plasma density and temperature requires a vacuum spectrometer. Even when the vacuum spectrometer is used, it is difficult to process a part of tangentially positioning the detector using a bellows when the Bragg angle is changed using bellows.

Third, the use of cylindrical crystals and multi-wire proportional counters as detectors made it difficult to measure two-dimensional x-rays.

Therefore, the present invention has been invented in view of the above-described conventional problems, and its object is to use a vacuum vessel that can rotate while maintaining a vacuum, so that the application of the spectroscope system to various Bragg angles is possible, and the vacuum Since it is a spectrometer system, it is designed to measure weak intensity x-rays with little loss of intensity during x-ray progression, and it is possible to use two-dimensional by using spherical crystal and recently developed x-ray CCD camera as detector. It is designed to measure x-rays, and the whole system is aimed at enabling optically precise alignment.

To achieve the above object, the spectrometer consists of two cylindrical vacuum vessels and bellows and pipes connecting them, and the x-rays reflect the Bragg angle. When equipped with spherical crystals, the detector is provided with a CCD camera with good x-ray sensitivity, and the two vacuum vessels can be rotated to measure various Bragg angles, as well as to precisely align optical alignment. Is to provide something that can be tailored.

1 is a complete assembly view of the spectroscope of the present invention

Figure 2 is an overall configuration diagram of a vacuum vessel in which the crystal of the present invention is located

3 is an overall configuration diagram of a vacuum container in which the CCD camera of the present invention is located;

<Description of the symbols for the main parts of the drawings>

(1): port (2): 0-ring

(3): rotating body (4): limiter

(5): spacer (6): table

(7): 0-ring (8): rail

(9): Additional port (11): Outer container

(12) Inner container (13): Blank flange

14: rotary table 15: bush

(16): Table Support Flange (17): Blank Flange

(18): Bush (19): Worm Wheel

(31): 0-ring 32: 0-ring

(33): 0-ring (41): connecting pipe

(51): CCD camera

Referring to the configuration and operation of the present invention in detail with reference to the accompanying drawings as follows.

1 is an overall assembly view of the spectroscope of the present invention,

2 is an overall configuration diagram of a vacuum vessel in which the crystal of the present invention is located;

Figure 3 shows the overall configuration of the vacuum container in which the CCD camera of the present invention is located.

The port (1) is designed to be rotatable so that it can be easily aligned and changed when measuring various Bragg angles, but the O-ring (2) of the vacuum container port (1) to rotate while maintaining the degree of vacuum. The rotor 3 is attached to the larger than the sight glass on the top, and the rotor 3 is sized by determining the range of rotation, and the same size as the curvature of the surface of the vacuum vessel for vacuum and rotation. The Teflon-coated 0-ring (2) is used to reduce friction with the 0-ring (2) when the rotating body (3) moves. A highly flexible spacer (5) is placed so that it does not come into direct contact with the face, and a suitable space between the rotor (3) and the 0-ring (2) is compressed by bolts, and the position of the crystal in the vacuum vessel is precisely Set up an optical table (6) to ensure proper alignment and vacuum The upper and lower flanges (13) and (17) and the table support flange (16) of the upper and lower flanges are fixed to a cylindrical container by using a 0-ring (7) to serve as a vacuum container, and the bushes (15) and (18) are rotated on the rotary table. It is inserted between the 14 and the worm wheel 19 to further seal the vacuum container, and also moves on the guide rail 8 provided with the worm gear so that the rotor 3 can be easily rotated. Therefore, the optical port can be moved as desired, and additional ports 9 are provided for measuring various Bragg angles, and a few more ports 9 are prepared for the vacuum gauge and additional measurements.

The vacuum container with the CCD camera 51 maintains the vacuum state so that the camera can be easily positioned in a tangential direction on a Loonland circle, while allowing the rotation of the CCD camera 51 to be controlled externally. And two vacuum vessels composed of a half moon-shaped inner container 12, and the port of the outer surface of the half moon-shaped inner container 12 is used only for the vacuum part of the CCD chip due to the characteristics of the CCD camera 51. The CCD camera 51 is attached to (1) so that the chip portion of the camera is exposed to vacuum and the other CCD camera 51 portion is exposed to the air, and the outer container 11 holds the camera chip and the half moon up and down. It is possible to maintain the vacuum, so that even if the inner vacuum container is rotated 360 degrees to maintain the vacuum, and the inner vacuum container with the CCD camera 51 is attached easily by using the worm gear and worm wheel 19 Rotation is possible Rock, and connection to the controller (controller) for controlling the CCD camera 51 is configured been that it is installed so that it extends out of the cable to the inside of the worm wheel (19).

The operation of the present invention is as follows.

As shown in FIG. 1, the present invention is designed to precisely place a vacuum vessel having a spherical crystal and a vacuum vessel having a CCD camera on a Lowland circle. 1 is a view from above after the entire system has been assembled.

As shown in FIG. 2, the port 1 is designed to be rotatable so that various Bragg angles can be easily aligned to change angles, but the vacuum vessel port 1 can be rotated while maintaining the degree of vacuum. ) A larger rotor 3 was mounted on the O-ring 2 of the sight glass. The rotating body 3 is determined in size by determining the range of rotation, and for the vacuum and rotation should be made of the same curvature of the surface of the vacuum vessel. In order to reduce friction with the 0-ring 2 when the rotor 3 moves, a Teflon-coated 0-ring 2 is used, and as shown in the side view of FIG. A flexible spacer 5 is provided so that it does not come into direct contact with the face, and a suitable space is maintained between the rotor 3 and the 0-ring 2 by bolt compression. An optical table 6 was placed in the vacuum vessel to precisely align the positions of the crystals. The upper and lower flanges (13) and (17) and the table support flange (16) of the vacuum vessel are fixed to the cylindrical vessel by using the 0-ring (7) to serve as the vacuum vessel and the bushes (15) and (18) It is inserted between the rotary table 14 and the worm wheel 19 to serve to further seal the vacuum container. In addition, since the rotor 3 moves on the guide rail 8 provided with the worm gear so that the rotor 3 can be easily rotated, the rotor 3 can be optically moved as desired. Additional ports 9 are provided for the measurement of various Bragg angles. In this case, the rotation range of the rotating body 3 was set small. In addition, several additional ports (9) were prepared for the vacuum gauge and additional measurements.

As shown in FIG. 3, the vacuum container with the CCD camera 51 controls the rotation of the CCD camera 51 from the outside while maintaining a vacuum state so that the camera can be easily positioned in a tangential direction on a Loland source. It is designed to be possible. In order to have this performance, two vacuum vessels consisting of an outer vessel 11 and a half moon-shaped inner vessel 12 were used.

Due to the characteristics of the CCD camera 51, only a portion of the CCD chip is often used for vacuum. As shown in FIG. 3, the CCD camera 51 is attached to the port 1 on the outer surface of the inner container 12 of the half moon shape. The chip portion of the camera is exposed to vacuum and the other CCD camera 51 portion is exposed to air, and the outer container 11 is configured to maintain the vacuum including the camera chip and the upper and lower portions of the half moon shape. This structure can maintain the vacuum even if the inner vacuum container rotates 360 degrees. In addition, the inner vacuum container to which the CCD camera 51 is attached is configured to be easily rotated using a worm gear and a worm wheel 19. Connection with a controller that controls the CCD camera 51 is such that the cable is pulled out of the worm wheel 19.

Moreover, in order to ensure the vacuum of a vacuum container, a plurality of 0-rings 31, 32, 33 are provided in a vacuum container.

Finally, the pipe 41 connecting the two containers is designed to have bellows so that the entire system can be optically aligned on the Ronan circle.

Therefore, the present invention enables the application of a spectroscope system for various Bragg angles, and because it is a vacuum spectrometer system, there is no loss of intensity during the progress of x-rays, so that weak x-rays can be measured, spherical crystals and CCD cameras. It is possible to make a significant contribution to measurement research by measuring two-dimensional x-rays. Also, a vacuum vessel designed to rotate while maintaining a high vacuum of 10 ^-7 Torr can contribute much to other industrial applications besides spectrometer. It can be effective.

Claims (5)

delete In order to measure the various Bragg angles, a vacuum vessel port (1) is placed on the sight glass 0-ring (2) and a rotating body (3) made of the same curvature as the surface of the vacuum vessel larger than this sight glass and vacuumed. An optical table 6 is installed in the container to align the positions of the crystals. A guide rail 8 having worm gears is attached to the rotating body 3 so that the rotating body 3 can be accurately and easily rotated at a desired angle. And an additional port (9) for vacuum X-ray spherical crystal spectroscopy, which can be used to precisely align many Bragg angles. The method of claim 2; Teflon-coated 0-ring (2) is used in consideration of friction with the 0-ring (7) when the rotating body (3) moves, and a spacer (5) is installed on the lower and upper surfaces of the rotating body (3). A vacuum X-ray spherical crystal spectrometer that can be used to precisely align a large number of Bragg angles, and is configured to maintain a proper space between the rotor (3) and the outer surface of the vacuum vessel at all times. The vacuum container in which the CCD camera 51 is located is provided with two vacuum containers consisting of an outer container 11 and a half moon-shaped inner container 12 while maintaining the vacuum state so that the camera is located in the tangential direction of the long field circle. It is possible to adjust the rotation of the CCD camera 51 from the outside, and the worm gear and the worm wheel 19 are rotated at the portion where the CCD camera 51 (or the CCD camera chip) is attached. Vacuum X-ray spherical crystal spectroscopy for precise alignment. The method of claim 4; When only the CCD chip portion of the CCD camera 51 is used for vacuum, the CCD camera 51 is attached to the port 1 on the outer surface of the inner container 12, which is half moon shaped, by using two vacuum containers. The CCD chip of 51) is exposed to vacuum, the other CCD camera 51 part is exposed to air, the outer container 11 maintains a vacuum, and the inner vacuum container to which the CCD camera 51 is attached is under the worm gear. Vacuum X-ray spherical crystal spectroscope that can be used to precisely align a large number of Bragg angles, characterized in that it is configured to rotate the desired angle accurately and easily using a worm wheel (19).