Application of compact NEG-sputter ion pump combination in UHV system of HIAF

doi:10.1016/j.vacuum.2018.08.038

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Application of compact NEG-sputter ion pump combination in UHV system of HIAF
	Luo, C.1,2,3; Li, P.1; Xie, W.J.1,3; Wan, Y.P.1; Chai, Z.1; Zhu, X.R.1; Meng, J.1; Chen, S.P.2; Yang, W.S.1,3
刊名	Vacuum
	2018-11-01
卷号	157 页码:159-165
关键词	Chemical activation Dynamics Getters Heavy ions Linear accelerators Protactinium Vacuum pumps Accelerator facilities Booster ring Dynamic flows Heavy-ion accelerator High energy density physics Non-evaporable getters Pumping speed Titanium sublimation pumps
ISSN号	0042207X
DOI	10.1016/j.vacuum.2018.08.038
英文摘要	HIAF-BRing, a new multi-purpose accelerator facility of the High Intensity Heavy-Ion Accelerator Facility project, requires an extremely high vacuum lower than 10−9 Pa to fulfill the requirements of radioactive beam physics and high energy density physics. Use of large speed Titanium sublimation pump (TSP) in combination with Sputter ion pumps (SIP) is not always feasible due to space limitations. A novel combination pump, based on Non Evaporable getter (NEG) and a 10 l/s SIP (NEXTorr® D 2000-10) has been evaluated as it provides large speed in a more compact design. The two combination pumps (TSP + SIP and NEXTorr D 2000-10) have been tested by dynamic flow method to measure the ultimate pressure, the pumping speed and the suitability for HIAF. Test results show that both combination pumps can be used in the pressure range of 10−10 Pa. The ultimate pressure of TSP + SIP combination pump is slightly lower than NEXTorr D 2000-10, but the latter one has much larger sorption capacities (H2: 210200 Pa l vs 265 Pa. l; CO: 430 Pa. l vs 24 Pa. l), which means it is applicable to a wider pressure range. At the same time, after twenty activation cycles, the initial pumping speed of NEXTorr D 2000-10 for H2 and CO decreased less than 10% as compared with the initial pumping speed of the first activation, which meets the actual vacuum system requirement of HIAF. A dedicated vacuum chamber with collimator and NEXTorr D 2000-10 has been designed and manufactured to stabilize the dynamic vacuum by decreasing the heavy ion induced gas desorption and increasing the gas pumping speed. The static and dynamic vacuum pressure evolution has been simulated to verify the feasibility of the NEXTorr D 2000-10 used in the HIAF-BRing. © 2018 Elsevier Ltd
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000449569600025
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114588]
专题	石油化工学院
作者单位	1.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou; 730000, China; 2.School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Huizhou Research Center of Ion Sciences, Huizhou; 516003, China
推荐引用方式 GB/T 7714	Luo, C.,Li, P.,Xie, W.J.,et al. Application of compact NEG-sputter ion pump combination in UHV system of HIAF[J]. Vacuum,2018,157:159-165.
APA	Luo, C..,Li, P..,Xie, W.J..,Wan, Y.P..,Chai, Z..,...&Yang, W.S..(2018).Application of compact NEG-sputter ion pump combination in UHV system of HIAF.Vacuum,157,159-165.
MLA	Luo, C.,et al."Application of compact NEG-sputter ion pump combination in UHV system of HIAF".Vacuum 157(2018):159-165.