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Polar coordinate reading type two-dimensional position sensitive detector with double wedge-strip anodes

A two-dimensional position and detector technology, used in radiation measurement, instruments, measurement devices, etc., can solve problems such as errors, and achieve stable count rate, high resolution, and small distortion.

Inactive Publication Date: 2014-10-08
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

For the above-mentioned WSAs, although most of the measurement requirements can be met, in the actual experimental measurement, the detection area of ​​a type of experiment is a circular area, and the measurement needs to be consistent. For this type of experiment, the traditional Cartesian coordinate readout method After WSA measurement, fitting calculation is required to obtain the final result, and traditional WSA often introduces unnecessary errors in the fitting calculation process, so there is an urgent need for a simple and fast measurement method to characterize the experimental results

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  • Polar coordinate reading type two-dimensional position sensitive detector with double wedge-strip anodes
  • Polar coordinate reading type two-dimensional position sensitive detector with double wedge-strip anodes
  • Polar coordinate reading type two-dimensional position sensitive detector with double wedge-strip anodes

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0022] Figure 2-4 , is a cross-sectional view of the position sensitive detector of the present invention. The position-sensitive detector generally includes a microchannel plate multiplier 4, a wedge-shaped anode 5, and detector support components 6-12 for fixing and assembling the microchannel plate and the wedge-shaped anode 5 and for extracting signals. The details are as follows:

[0023] The micro-channel plate multiplier 4 multiplies and amplifies the incident particle signal, and is composed of two micro-channel plates cascaded. The voltage can be supplied by the peripheral voltage divider circuit, and the voltage applied to each microchannel board is about 900V, and the total amplification factor is 10 6 -10 ...

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Abstract

The invention discloses a polar coordinate reading type two-dimensional position sensitive detector with double wedge-strip anodes. The wedge-strip anodes are partitioned into specific patterns formed by wedge electrodes, strip electrodes and compensation electrodes, wherein the six wedge electrodes, the strip electrodes and the compensation electrodes of one wedge-strip anode and the six wedge electrodes, the strip electrodes and the compensation electrodes of the other wedge-strip anode are respectively matched to form the two symmetric semi-circular wedge-strip patterns, all the electrodes are disconnected from one another, and the three types of electrodes of the wedge-strip anodes are arranged in the radial direction. When the detector is used for measuring an annular area to be detected, the distance and the polar angle between a particle and the center can be directly measured. The double wedge-strip anodes can achieve the coincidence measurement that the particle can be detected in the two semi-circular areas, and have the advantage that the dead zone is small.

Description

technical field [0001] The invention relates to the field of particle detection and measurement, in particular to a particle position sensitive detector, especially a position sensitive detector comprising a wedge-shaped anode. Background technique [0002] Wedge and Stroid Anodes (WSA) are widely used in atomic and molecular physics, nuclear and particle physics experiments, and have the advantages of high resolution, small distortion, stability and high counting rate. H.O.Anger proposed the earliest design method of WSA, which has 4 electrodes (see H.O.Anger, Instrum.Soc.Am.Trans., 5(1966), 311). J.S. Lapigton and H.E. Schwaz, gave a circular design and reduced the 4 electrode output to 3 electrode output mode (see J.S. Lapigton, H.E. Schwaz, IEEE Trans. Nucl. Sci., NS33 (1986)). R.W.VanBoeyen and J.F.Williams combined the double semicircular WSA to make it more suitable for coincidence measurement (see R.W.VanBoeyen and J.F.Williams, Rev. . Sci.Instrum., 76(2005)063303-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/00
CPCG01T1/2957
Inventor 杨靖王凡肖斌单旭陈向军
Owner UNIV OF SCI & TECH OF CHINA
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