Manufacturing process of crystal array probe with sensitive position
A technology of crystal array and manufacturing process, which is applied in the fields of nuclear physics, medical imaging, and safety inspection. It can solve the problems of crystal array accuracy defects, the impact of nuclear radiation measurement accuracy, and the consistency of crystal light output, so as to achieve consistent output signals. Good performance, huge commercial application value, and small position error
Active Publication Date: 2020-09-08
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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Problems solved by technology
The accuracy of the CsI(Tl) crystal array produced by the traditional method has certain defects, which affects the consistency of the crystal light output and affects the accuracy of nuclear radiation measurement.
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[0030] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following technical solutions in the present invention are described clearly and completely. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.
[0031] The invention provides a position-sensitive crystal array probe manufacturing process, including a CsI (Tl) crystal array, a multi-anode position-sensitive photomultiplier tube H8500C, and a four-way readout circuit board designed by a DCP bridge circuit, wherein the CsI (Tl) crystal array The processing method is:
[0032] Step 1. Use a high-precision cutting machine to slice the large-sized bulk crystal material, and draw a CsI(Tl) crystal array with a parallelism bett...
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Abstract
The invention provides a manufacturing process of a crystal array probe with the sensitive position and belongs to the field of nuclear physics experiments, medical imaging and safety inspection. A CsI (T1) crystal array is coupled with a multi-anode position sensitive photomultiplier tube H8500C, and is combined with a four-path reading circuit board designed by an efficient, rapid and economicalDCP bridge circuit to form a position sensitive detector probe. Testing proves, CsI(T1) crystal array with crystal pixel size of 1.0*1.0*5.0mm<3> has the position resolution that FWHMX is equal to 0.58 mm, FWHMY is equal to 0.63 mm, the size of a crystal pixel strip is 2.0*2.0*10.0mm<3>, the position resolution is as follows, FWHMX is equal to 0.86 mm, and FWHMY is equal to 0.80 mm. The method has a certain application prospect in the fields of medical imaging, high-resolution camera research and the like.
Description
technical field [0001] The invention belongs to the fields of nuclear physics, medical imaging, safety inspection and the like, and in particular relates to a manufacturing process of a nuclear radiation position information measuring probe in nuclear radiation measurement. Background technique [0002] The measurement of nuclear radiation position information puts forward higher requirements on the quality of nuclear radiation-sensitive crystal probes. The quality of crystal probes is not only strongly dependent on the quality of nuclear radiation-sensitive crystals, but also the quality of CsI(Tl) crystal array probes. very important link. [0003] The traditional CsI(Tl) crystal array probes are all individually processed unit pixel strips, and after surface treatment, the crystal pixel strips are artificially spliced into an array. The accuracy of the CsI(Tl) crystal array produced by the traditional method has certain defects, which affects the consistency of the cry...
Claims
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Login to View More IPC IPC(8): G01T1/202G01T1/208
CPCG01T1/202G01T1/208
Inventor 陈若富石国柱沈爱花陈金达张秀玲胡荣江徐瑚珊胡正国杜成名
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI