Photomultiplier linear range testing device and method

A photomultiplier tube, linear range technology, applied in measuring devices, vacuum tube testing, measuring electricity and other directions, can solve problems such as cumbersome use, and achieve the effect of high measurement accuracy and controllable testing process.

Active Publication Date: 2020-07-10
NORTH NIGHT VISION TECH
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Problems solved by technology

The light intensity of the two light sources of the dual optical path method needs to be calibrated before use, and the light intensity of the two light sources is required to be as consistent as possible with the voltage change characteristics. The light source needs high stability. After long-term use, the light source characteristics change. It is more cumbersome to re-calibrate or replace the light source

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  • Photomultiplier linear range testing device and method
  • Photomultiplier linear range testing device and method
  • Photomultiplier linear range testing device and method

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Embodiment Construction

[0049] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0050] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0051] combine figure 1 , 2 As shown, the photomultiplier tube linear range test device of the embodiment of the present i...

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Abstract

The invention provides a photomultiplier linear range testing device and method. The photomultiplier linear range testing device comprises a light source, a light source driver, a light splitting camera obscura, an integrating sphere, a light guide piece, a testing camera obscura, a testing electronics system and a computer. The light source emits light and irradiates the light-splitting dark box.The light splitting camera obscura is an opaque box body with a light inlet and a light outlet, light beam splitting output is carried out through the light splitting camera obscura, and the light beam is irradiated into the integrating sphere through the light outlet to be uniformly mixed. A light outlet of the integrating sphere is connected with a light inlet of the test camera obscura througha light guide piece. The test electronics system is used for providing high voltage for working of the photomultiplier and measuring an output signal of the photomultiplier. The computer is used forcontrolling the operation of the test device, and is used for controlling the light source driver, controlling the electric device in the light splitting dark box to realize light splitting, controlling and configuring the test of the test electronics system, reading a measurement value of the test electronics system and generating a test result after processing.

Description

technical field [0001] The invention relates to the technical field of photomultiplier tubes (PMTs), in particular to a device and method for testing the linear range of photomultiplier tubes. Background technique [0002] A photomultiplier tube (PMT) is a vacuum detection device that uses the photoelectric effect to convert optical signals into electrical signals and uses the secondary electron emission effect to amplify the electrical signals step by step and finally output current signals. It is widely used in cosmic ray detection, gamma Various low-light detection fields such as ray detection, medical imaging, and analytical spectrometer. The linear range is the output dynamic range, which is an important technical index of the detector. In the linear range, the output signal of the detector has a linear relationship with the radiant flux of the incident light. Detectors generally cannot operate beyond the linear range. [0003] The detector linear range test needs to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/25
CPCG01R31/252
Inventor 李珅司曙光张昊达孙建宁黄国瑞黄之瑶曹宜起石梦瑶金真顾莹
Owner NORTH NIGHT VISION TECH
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