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| The measurement of the depth dose distribution of proton beam using the PEAKFINDER |
| LI Mingsheng, YUAN Jilong, JIANG Qinghuan, CHENG Jinsheng |
| National institute for radiological protection, China CDC, Bejing 100088 China |
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Abstract Objective To measure the depth dose distribution of proton under spot scanning in water, testing the reproducibility of the depth of maximum dose value and depth of penetration.Methods Measure the depth dose distribution of proton in low、middle and high energy scope with the PEAKFINDER, get the depth distribution curve.Results The maximum standard deviation of repeatability of maximum dose value and penetration depth is 0.05mm and 0.03mm, respectively, which is lower than the permitted value 1mm.Conclusion The reproducibility and precision of the depth of maximum dose value and depth of penetration fulfill the testing request of PEAKFINDER.
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Received: 03 June 2018
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