本文選題：MCNP5　切入點：ADS　出處：《東華理工大學》2014年碩士論文　論文類型：學位論文

【摘要】：加速器驅動次臨界系統(tǒng)(簡稱ADS)是嬗變核廢料的最強有力工具,ADS利用加速器加速的高能質子與重靶核發(fā)生散裂反應,用散裂產(chǎn)生的中子作為中子源來驅動次臨界系統(tǒng),這種處理乏燃料的方式被認為是一條有前途的新一代核能開發(fā)的技術路線,其研究成果將明顯提高核能系統(tǒng)的資源效益和環(huán)境效益。本文結合國內外ADS嬗變堆的研究情況,以及蒙特卡羅方法研究的文獻,通過使用ORIGEN2.1和MCNP5軟件,研究ADS系統(tǒng)在冷卻劑選擇、次錒系核素和長壽命裂變產(chǎn)物的積累情況,發(fā)現(xiàn)在研究的3種冷卻劑中,液態(tài)鉛影響總體上最大,而液態(tài)鈉影響最小;通過能譜分析得出99Tc對中子能譜影響較大,而129I對中子能譜的影;再通過Simulink軟件對嬗變堆的反應性變化做了研究,發(fā)現(xiàn)反應堆在有外部反應性引入的情況下,功率被穩(wěn)定在另一個功率水平上。由溫度效應引入的負的反應性,使反應堆具有自穩(wěn)性。得到的結論為ADS的后續(xù)研究提供參考。
[Abstract]:Accelerator driven subcritical system (ads) is the most powerful tool for transmutation of nuclear waste. Ads uses accelerator accelerated high energy proton to spallate with heavy target nucleus, and uses neutron produced by spallation as neutron source to drive subcritical system. This treatment of spent fuel is considered to be a promising technical route for the development of new generation nuclear energy, and its research results will obviously improve the resource and environmental benefits of nuclear energy system. This paper combines the research situation of ADS transmutation reactor at home and abroad. Through the use of ORIGEN2.1 and MCNP5 software, the paper studies the selection of coolant, the accumulation of minor actinide nuclides and long-lived fission products in the system of ADS, and finds out that in the three coolants studied, The influence of liquid lead on the whole is the greatest, while the influence of liquid sodium is the least. By energy spectrum analysis, it is concluded that 99Tc has a great influence on neutron energy spectrum, while 129I has a great effect on neutron energy spectrum. The reactivity changes of transmutation reactor are studied by Simulink software. It is found that when the reactor is introduced with external reactivity, the power is stabilized at another power level. The negative reactivity introduced by the temperature effect makes the reactor self-stable. The conclusion provides a reference for the further study of ADS.
【學位授予單位】：東華理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM623;TL24

【參考文獻】

相關期刊論文 前1條

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本文編號：1651875