【摘 要】
:
Proton therapy is the most advanced radiotherapy approach in the world,and causes less damage to normal human tissue than traditional radiotherapy.Because the t
【机 构】
:
Institute of Plasma Physics, Chinese Academy of Sciences,Hefei 230031, China;University of Science a
论文部分内容阅读
Proton therapy is the most advanced radiotherapy approach in the world,and causes less damage to normal human tissue than traditional radiotherapy.Because the treatment process produces a high-energy proton beam,the personnel safety interlock system mainly considers measures to protect personnel from radiation hazards during beam preparation and the beam release process.Unlike other safety interlock systems,the personnel safety interlock system designed in this study focuses on the safety and stability of the system itself.The hardware and software of important interlock control loops are designed and developed according to the requirements of Safety Integrity Level 3 specified by IEC61508.A set of redundant ring networks was developed to ensure that damage to a certain network line does not affect the normal operation of the system.A set of friendly operation interfaces and data storage systems were developed to ensure that the operator can monitor the data in real time and trace the data.The personnel safety interlock system mainly includes a beam enabling function,clearance function,and emergency stop function.The system was put into actual use and successfully ensured personnel safety.
其他文献
教学实践证明,重视情感目标指导,引导学生在主动学习探究中形成良好的学习意志和顽强的品质,更利于学生暴露学习思维,便于教师及时调整教学策略,帮助学生主动融入课堂,激发他们的学习内驱动力和活力。 1. 多让学生七嘴八舌,让他们有自由感 学生在课堂学习上希望获得更多的信任和尊重,获得更多的自由。在学生在课堂上尽情表达和主动展示,利于增强他们的自由感。给学生更多话语权和表达权,能使得他们的语言表达思维
The microstructure and strengthening mechanisms of as-cast Mg-6Al-6Nd alloy were studied. The results show that the addition of 6 wt.% Nd into Mg-6Al alloy lead
UN/EDIFACT是国际公认的联合国推荐的用于行政、商业和运输方面的电子数据交换标准,由联合国欧洲经济委员会贸易程序简化工作组制定。自1986年第一份联合国标准报文(UNSM)—
针对传感器齿轮副产生磨损与掉块的情况,对齿轮副进行宏观和微观组织形貌分析,结果表明,齿轮的材质组织正常,从动齿轮掉块性质为起始应力较大而扩展应力较小的疲劳掉块,从动
摘要:以某型机载光电探测设备为研究对象,通过对机载光电装备的外场激光校靶工作机理和测试方法的研究分析,采用先进的多光谱采集技术和图像算法技术,实现兼容多型机的机载光电设备激光校靶方法。该方法能大幅提高检测效率和测试精度,有效规避测试中的人为差错和安全隐患,对加强外场保障能力和图像技术在机载设备维护中的推广具有显著意义。 关键词:激光校靶;不平行度;图像采集;图像算法 Keywords: las
某型飞机在按照给定的加油流量值进行压力加油试验时发现,当压力加油控制器显示满油信号时,飞机实际加油量明显小于飞机载油量,即出现假满现象.本文针对这一现象进行分析研究
摘要:基于某型航空发动机结构及表面完整性要求,通过对本次燃油泄漏故障的机理进行研究,提出了同类结构及表面完整性维修改进设计要点。 关键词:发动机;燃油导管;泄漏;卡箍;衬套 Keywords:engine;fuel pipe;leakage;clamp;bush 0 引言 某型发动机在役使用过程中发生一起燃油泄漏故障,危及飞行安全。经在翼检查发现,发动机高压燃油泵至高压燃油过滤器间燃油导管
气动舵机作为制导装备中控制系统的执行元件,主要作用是在制导装备飞行途中控制飞行姿态和改变飞行轨迹.正常情况下装备保持稳定飞行,但在整弹检测时,偶有舵机抖动问题出现,
Isochronous mass spectrometry (IMS) of heavyion storage rings is a powerful tool for the mass measurements of short-lived nuclei.In IMS experiments,masses are d
本来,美能生乐,美能使人产生浓厚的兴趣。就全国统编中学语文教材而言,选入的文质兼美的文章,尤其是文学作品,堪称中外文学史上的经典之作,既有“笔落惊风雨,诗成泣鬼神”的