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The Latest developed LECR2M (Lanzhou ECR No.2 Modified)source is the updated one of LECR2(Lanzhou ECR No.2)source at IMP.It has been assembled on the low energy ion beam experimental platform to produce MCI beams for atomic physics and material pllysics experimental research.In our updating program,the structure of injection and extraction components has been modified to make the source structure more simple and effective.The hexapole magnet has also been replaced by a new hexapole magnet with higher radial field and larger inner diameter.With this updating,stronger magnetic field confinement of the ECR plasma is possible and better base vacuum condition is also achieved.LECR2M was designed to be operated at 14.5GHz.During the preliminary test.1.3emA O6 beam was extracted with the injected rf power of 1.1kW.The source has been used to deliver intense MCI beams for different experiments.After some discussion of the main features of this newly updated source,some of the typical commissioning test results of LECR2M will be presented. 相似文献
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教材是学生学习的根本,是学生各种知识来源的主渠道.人教版普通高中课程标准实验教科书《物理》吸取了中外教材编写的一些有益经验,在版面设计、编写体例、内容等方面呈现出新的特点,这些变化必然对我们的教学产生影响.我们要充分利用教材,引导学生亲历物理,学好物理,运用物理知识解决实际问题,培养物理思维能力. 相似文献
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将基于序列模式挖掘技术的测试用例再生成策略实际应用于openSCADA软件的测试过程。针对openSCADA软件的测试用例库,深入探讨方法调用序列的抓取、序列模式的分类识别、新测试用例的演化搜索等关键技术,从而实现测试用例自动再生成。实验结果表明:采用该测试用例再生成策略能够有效地为openSCADA软件自动生成新的测试用例。 相似文献
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