法拉第筒校準(zhǔn)丙氨酸對質(zhì)子吸收劑量技術(shù)研究.pdf

1、蘭州大學(xué)碩士學(xué)位論文法拉第筒校準(zhǔn)丙氨酸對質(zhì)子吸收劑量技術(shù)研究姓名：蘇丹申請學(xué)位級(jí)別：碩士專業(yè)：粒子物理與原子核物理指導(dǎo)教師：徐進(jìn)章林敏20090501蘭州大學(xué)碩十學(xué)位論文ABSTRACTThispaperintroducedamethodofcalibrationabsorbeddoseofalaninewithfaradaycupatprotonbeamanddesignedanewkindoffaradaycupnamedlimit

2、edopeningfaradaycup(LOFC)TheperformanceofLOFCissuperiortotraditionalfaradaycup，whichhasbeenprovedbymeasuringwithacceleratorsandsimulatingwithAnsoftThroughtheseveralapproachessuchasbeamscatteringsystemdesign，beammonitorin

3、gsystemdesign，anddataacquisitionsystemstudythispaperestablishedasetoffilmdosimetercalibrationsystemwithfaradaycupThroughanalyzingbeamscatteringsystem，thispaperpresentedthemultiscatteringfilmstheory，whichisscatteringangle

4、ofmultifilmsislargerthansinglefilmwhentheprotonenergylossisthesameWeobtainedalanineresponsecurveof2kGy～30kGyrang，andmeasuredalanineBraggpeakabsorbeddoseat10MeVprotonbeamAtlast，weevaluatedtheuncertaintyofcalibratingproton

5、absorbeddoseofalaninewithfaradaycup，obtainedtheprotonlevelgroundabsorbeddoseofalanineuncertaintyis355％，andprotonBraggpeakabsorbeddoseofalanineuncertaintyis373％Keywords：Faradaycup，alaninedosimeterdoseresponse，absorbeddose