| 束流真空管道中放电现象的实验研究 |
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| 引用本文： | 宋洪. 束流真空管道中放电现象的实验研究[J]. 真空, 2005, 42(5): 39-41 |
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| 作者姓名： | 宋洪 |
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| 作者单位： | 1. 中国科学院高能物理所,北京,100049
2. LHC, CERN Geneva |
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| 基金项目： | 感谢Dr Jean-Michel Laurent对我工作的耐心指导和帮助. |
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| 摘 要： | 目前正在欧洲核子中心(CERN)建造的LHC(Large Hadron Collider)是世界上最大的加速器,它是一个具有高能量(7 TeV)大流强(0.53 A)的质子加速器.在它的直线节真空系统中,绝大部分的真空盒内表面将被镀上NEG薄膜.这样在又细又长的真空盒里,当有束流通过时,NEG薄膜不仅可以作为分布式吸气剂泵使用,而且NEG薄膜还具有降低二次电子发射系数的作用,因此了解NEG薄膜的性能是很重要的.
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| 关 键 词： | 真空盒的测试 多次电子撞击 NEG薄膜 激活温度 |
| 文章编号： | 1002-0322（2005）05-0039-03 |
| 收稿时间： | 2005-01-18 |
| 修稿时间： | 2005-01-18 |
Multipacting test of NEG coated chamber |
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| SONG Hong,Jean-Michel LAURENT. Multipacting test of NEG coated chamber[J]. Vacuum(China), 2005, 42(5): 39-41 |
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| Authors: | SONG Hong Jean-Michel LAURENT |
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| Abstract: | The construction of LHC(Large Hadron Collider) at CERN is under way and it will be the largest accelerator in the world,of which the proton beam energy is 7 Tev and the intensity of beam 0.53 A.On the inner wall surfaces of the straight sections of most of vacuum chambers will be NEG coated.Thus,when a beam current is passing through the long and narrow vacuum chamber the NEG thin films will not only play a role of distrbutive getter pump but also serve the function of reducing the coefficient of secondary electron emission.So,it is of importance to understand the properties of NEG thin films. |
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| Keywords: | test vacuum chamber multiple electron impact(mulipactiong) NEG film activationarytemperature |
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