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Detector using wire array as cathode, use method and calibration method

A detector and cathode technology, applied in the field of pulsed soft X-ray quantitative measurement, can solve problems such as difficult quantitative measurement

Active Publication Date: 2020-06-02
INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of pulsed power devices and lasers, pulsed soft X-rays will become more and more powerful, making quantitative measurements with existing detectors more difficult

Method used

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  • Detector using wire array as cathode, use method and calibration method
  • Detector using wire array as cathode, use method and calibration method
  • Detector using wire array as cathode, use method and calibration method

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Embodiment

[0031] Please refer to Figure 1-Figure 3 , 7 is mounted on 4 by hooking or welding, so that 7 passes through the hole in the middle of 4 along a straight line. 5 is connected with 4. The light hole 11 is opened on the 8, and the 8 is connected with the 9. 1 is placed inside 2, so that the central axis of 1 coincides with the central axis of 2, and the minimum distance between each part of 1 and 2 is approximately equal. Adjust the positional relationship between 7 and 11, so that each hole of 11 can correspond to some positions of 7. Connect 6 to the external circuit as the cathode of the detector and connect 10 to the external circuit as the anode of the detector.

[0032] During use, align 11 with the direction of X-ray incidence, and make X-ray pass through 11 and irradiate on 7 . An external circuit is used to apply a voltage between the cathode assembly and the anode assembly, and the cathode is at the negative pole of the voltage and the anode is at the positive pol...

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Abstract

The invention discloses a detector using a wire array as a cathode, a use method and a calibration method. The detector comprises a wire array type cathode assembly that includes a wire array frame, awire array and a cathode current leading-out part; the wire array frame is a metal sheet with a hole in the center; the wire array comprises at least one metal wire; the cathode current leading-out part is used for fixing the wire array frame and conducting electricity; one end of a metal wire in the wire array is fixed on the wire array frame, the other end of the metal wire penetrates through ahole in the center of the wire array frame, and the metal wire suspended in the hole forms a cathode working area of the detector; the detector also has a surrounding type anode assembly that comprises a surrounding type anode sheet and an anode leading-out part; the surrounding type anode sheet is a metal sheet with a light hole; the anode current leading-out part is used for fixing the surrounding type anode plate and conducting electricity; the central axis of the wire array frame along the long side coincides with the central axis of the surrounding type anode sheet. According to the invention, the detector can reach a higher saturation threshold, and therefore the requirement for measuring higher soft X-ray radiation flux is met.

Description

technical field [0001] The invention relates to the field of quantitative measurement of pulsed soft X-rays, in particular to an X-ray diode for measuring the flux of strong pulsed soft X-rays and its calibration and use method. Background technique [0002] The X-ray diode is a detector suitable for measuring the flux of intense pulsed soft X-rays. The working region of the traditional X-ray diode cathode is a planar structure, and its saturation threshold is mainly determined by the space charge effect (Wang Hongbin, et al., Physics, 23(9), p561, 1994). The power of soft X-rays produced in modern laboratories using large pulsed power devices or large lasers is already very high. In order to measure the flux of soft X-rays, it is usually necessary to arrange the X-ray diodes several meters to tens of meters away from the radiation source (Wang Kunlun, et al., Strong Laser and Particle Beams, 28(4), 045009, 2016), combined with A neutral attenuator with a grid structure is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/24G01T7/00
CPCG01T1/24G01T1/241G01T7/005
Inventor 王昆仑张思群周少彤
Owner INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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