Tool for detecting accelerator slip
A leakage rate and accelerator technology, applied in the direction of instruments, nuclear engineering, measuring devices, etc., can solve the problems of low measurement accuracy, complex required devices, and difficulty in the accurate location of detection points, so as to achieve improved accuracy, low cost, and Easy to use effects
Inactive Publication Date: 2004-06-30
TSINGHUA UNIV +1
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Problems solved by technology
However, when detecting the accelerator leak rate, the spherical surface with the target point as the center and a radius of 1 meter does not actually exist, so it is very difficult to determine the exact position of each expected detection point
Moreover, additional devices are needed to fix the detectors on each detection point, the required devices are complicated, and the accuracy of measurement is low
Method used
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[0012] see figure 2 , image 3 , a tool for detecting the leakage rate of an accelerator includes a detector, eight connecting rods 1 using retractable pull rods, a support plate 2 made of wood or aluminum alloy, eight inner circular wires 3, and eight outer circular wires 4. The eight connecting rods 1 are fixed on the support plate 2, and the angle between each connecting rod 1 is 45°. On the eight connecting rods 1, the distance from the center of the support plate 2 is 0.707 meters, and there are eight inner circle lines 3 vertically. Mark eight upper marking points 5 on the eight inner circle lines 3 at a distance of 0.293 meters from the connecting rod. Mark eight lower mark points 7 at the distance of 1.707 meters from the connecting rod on the eight inner circle lines 3 . On the eight connecting rods 1, the distance from the center of the support plate 2 is 1 meter, and there are eight outer circle lines 4 vertically. Mark eight middle mark points 6 at 1 meter aw...
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The invention is to determine position for each detecting point and make accuracy rate be raised greatly. The invention includes eight pieces of link rods, support plate, eight pieces of inner circle lines and eight pieces of excircle lines. Link rods are distributed on the support plate evenly with angle 45 degree between two adjacent rods. Each inner circle line is vertically tied on link rod, and the distance between the tied point and center of the support plate is 0.707 m. Eight upper mark points / eight lower mark points are on inner circle lines and located at distance from the link rods being as 0.293 m / 1.707 m respectively. Each excircle is vertically tied on link rod, and the distance between the tied point and center of the support plate is 1 m. Eight middle mark points are on excircle lines and located at distance from the link rods being as 1 m respectively. Detectors are setup at these upper, middle and lower mark points.
Description
technical field [0001] The invention relates to the technical field of accelerators in radiation detection technology, in particular to the technical field of accelerator leakage rate detection. Background technique [0002] In the field of radiation detection technology, the accelerator is usually used as the radiation source, and measuring the leak rate of the accelerator is an important technical index of the accelerator. The conventional test method in the prior art is: 1) under the condition that the accelerator emits a beam normally, measure The dose rate at a distance of 1 meter from the accelerator target ; 2) Use a heavy shield to block the beam exit of the accelerator, and measure the dose rate of each detection point at a distance of 1 meter from the target point under the condition that the accelerator normally exits the beam ; 3) Using two sets of data to calculate the leak rate of the accelerator. Commonly used methods such as figure 1 As shown, each detec...
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IPC IPC(8): G01T1/29G21C17/00
CPCY02E30/30
Inventor 李君利邓艳丽王兵明申金
Owner TSINGHUA UNIV