Preliminary study on in-situ activation of NEG coated vacuum chamber

Ma Wenjing; Zhao Zhuang; Zhang Shancai; Wang Sihui; Hong Yuanzhi; Fan Le; Wang Chenghong; Wei Wei

doi:10.11884/HPLPB202234.220030

Volume 34 Issue 8

Jul. 2022

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > High Power Laser and Particle Beams > 2022 > 34(8): 084005

Sun Yong, Liu Qiang, Yan Liping, et al. Applicability evaluation of fast algorithm for shielding effectiveness prediction of metallic enclosures with apertures[J]. High Power Laser and Particle Beams, 2017, 29: 083203. doi: 10.11884/HPLPB201729.170022

Citation:

Ma Wenjing, Zhao Zhuang, Zhang Shancai, et al. Preliminary study on in-situ activation of NEG coated vacuum chamber[J]. High Power Laser and Particle Beams, 2022, 34: 084005. doi: 10.11884/HPLPB202234.220030

Citation:

PDF( 6054 KB)

Preliminary study on in-situ activation of NEG coated vacuum chamber

doi: 10.11884/HPLPB202234.220030

1.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
2.
Institute of Advanced Science Facilities, Shenzhen 518107, China

Received Date: 2022-01-19
Rev Recd Date: 2022-05-25

Available Online: 2022-05-30

Publish Date: 2022-07-20

Abstract

Abstract

The Hefei Advanced Light Facility (HALF), which includes an injector and a Diffraction Limited Storage Ring (DLSR), needs ultrahigh vacuum environment to satisfy the lifetime of beam. The small-diameter vacuum chamber coated with NEG (Non-Evaporable Getter) not only saves space, but also has a high pumping speed, which can well meet the demand of obtaining ultra-high vacuum in diffraction-limited devices. The NEG films need to be activated at a certain temperature to get the pumping speed. Therefore, the NEG film activation method and process is important to ensure the safety of the other system components, such as the magnets. Based on the appropriate activation temperature of the coated NEG films, a temperature analysis model was applied to simulate the temperature distribution of the NEG coated vacuum chamber and the magnet during in-situ activation at the temperatures of 180 ℃ and 200 ℃, respectively. The oxygen-free silver bearing copper (OFS) vacuum tubes were baked out by polyimide (PI) heaters and the temperature of the tube and the magnet pole was measured. The maximum temperature measured at the magnet pole was about 40 ℃, which confirmed the safety of the quadrupole magnet. This work will be a solution and basis of in-situ activation of the NEG-coated vacuum chamber in the Hefei Advanced Light Facility.
- diffraction limited storage ring,
- ultrahigh vacuum,
- small diameter,
- the NEG coated vacuum chamber,
- in-situ activation

FullText(HTML)

References(17)

References

[1]	徐宏亮, 张剑锋, 黄贵荣, 等. 合肥储存环电子束流寿命分析[J]. 强激光与粒子束, 2006, 18(3):455-458. (Xu Hongliang, Zhang Jianfeng, Huang Guirong, et al. Analysis of beam lifetime in Hefei storage ring[J]. High Power Laser and Particle Beams, 2006, 18(3): 455-458 Xu Hongliang, Zhang Jianfeng, Huang Guirong, et al. Analysis of beam lifetime in Hefei storage ring[J]. High Power Laser and Particle Beams, 2006, 18(3): 455-458
[2]	Al-Dmour E, Ahlback J, Einfeld D, et al. Diffraction-limited storage-ring vacuum technology[J]. Journal of Synchrotron Radiation, 2014, 21: 878-883. doi: 10.1107/S1600577514019286
[3]	Sergei G. Lessons learned from the ESRF magnets and vacuum chamber assembling[C]//Beam Tests and Commissioning of Low Emittance Storage Rings. 2019.
[4]	Yang Yuchen, Ma Yongsheng, Wang Jia’ou, et al. Activation of Zr, ZrVHf and TiZrV non-evaporative getters characterized by in situ synchrotron radiation photoemission spectroscopy[J]. Applied Sciences, 2021, 11: 4844. doi: 10.3390/app11114844
[5]	Chuntonov K, Setina J, Douglass G. The newest getter technologies: materials, processes, equipment[J]. Journal of Materials Science and Chemical Engineering, 2015, 3(9): 57-67. doi: 10.4236/msce.2015.39008
[6]	Grabski M, Al-Dmour E. Commissioning and operation status of the MAX IV 3 GeV storage ring vacuum system[J]. Journal of Synchrotron Radiation, 2021, 28(3): 718-731. doi: 10.1107/S1600577521002599
[7]	Rocha T. The vacuum system of the upcoming SIRIUS light source in Brazil[C]//Beam Dynamics Meets Vacuum, Collimations and Surfaces. 2017.
[8]	He Ping, Guo Dizhou, Liu Baiqi, et al. Deposition of non-evaporative getters R&D activity for HEPS-TF[C]//Proceedings of 2nd North American Particle Accelerator Conference. 2016.
[9]	He Ping, Ma Yongsheng, Yang Yuchen, et al. Preparation and characterization of non-evaporable Ti–Zr–V getter films for HEPS[C]//Proceedings of the 60th ICFA Advanced Beam Dynamics Workshop on Future Light Sources. 2018.
[10]	颜攀, 韩兴博, 冷海燕, 等. 非蒸散型吸气剂的研究进展[J]. 真空科学与技术学报, 2018, 38(8):650-656. (Yan Pan, Han Xingbo, Leng Haiyan, et al. Latest development of non-evaporable getter materials[J]. Chinese Journal of Vacuum Science and Technology, 2018, 38(8): 650-656 Yan Pan, Han Xingbo, Leng Haiyan, et al. Latest development of non-evaporable getter materials[J]. Chinese Journal of Vacuum Science and Technology, 2018, 38(8): 650-656
[11]	张波, 尉伟, 范乐, 等. TiZrV吸气剂薄膜吸气性能的研究[J]. 真空科学与技术学报, 2012, 32(2):114-117. (Zhang Bo, Wei Wei, Fan Le, et al. Development and characterization of TiZrV getter films[J]. Chinese Journal of Vacuum Science and Technology, 2012, 32(2): 114-117 doi: 10.3969/j.issn.1672-7126.2012.02.06 Zhang Bo, Wei Wei, Fan Le, et al. Development and characterization of TiZrV getter films[J]. Chinese Journal of Vacuum Science and Technology, 2012, 32(2): 114-117 doi: 10.3969/j.issn.1672-7126.2012.02.06
[12]	Prodromides A E, Scheuerlein C, Taborelli M. Lowering the activation temperature of TiZrV non-evaporable getter films[J]. Vacuum, 2001, 60(1/2): 35-41.
[13]	Al-Dmour E, Einfeld D, Pasquaud J, et al. Vacuum system design for the MAX IV 3 GeV ring[C]//Proceedings of the 2nd International Conference on Particle Accelerator. 2011.
[14]	Paolo C. The septum magnet vacuum chambers of the LHC: production procedure and vacuum characterization of the first prototypes[C]//The 9th European Vacuum Conference. 2005.
[15]	Zhu Bangle, Ge Xiaoqin, Wang Sihui, et al. Activation and pumping characteristics of Ti-Zr-V films deposited on narrow tubeds[J]. Nuclear Science and Techniques, 2021, 32: 50. doi: 10.1007/s41365-021-00880-4
[16]	张波, 王勇, 尉伟, 等. 直流磁控溅射法在管道内壁镀TiZrV薄膜[J]. 强激光与粒子束, 2010, 22(9):2124-2128. (Zhang Bo, Wang Yong, Wei Wei, et al. Deposition of TiZrV coatings onto inner wall of stainless steel pipe by DC magnetron sputtering[J]. High Power Laser and Particle Beams, 2010, 22(9): 2124-2128 doi: 10.3788/HPLPB20102209.2124 Zhang Bo, Wang Yong, Wei Wei, et al. Deposition of TiZrV coatings onto inner wall of stainless steel pipe by DC magnetron sputtering[J]. High Power Laser and Particle Beams, 2010, 22(9): 2124-2128 doi: 10.3788/HPLPB20102209.2124
[17]	Wang Sihui, Wang Zhiwei, Shu Xin, et al. Activation characterization of the Ti-Zr-V getter films deposited by magnetron sputtering[J]. Applied Surface Science, 2020, 528: 147059. doi: 10.1016/j.apsusc.2020.147059

Relative Articles

Supplements(0)

Cited By

Cited by

Periodical cited type(2)

1.	范永山，杜畅通，张化一，郑曙昕，姚红娟，邢庆子，王学武，闫逸花，王敏文，王忠明. Xi PAF重离子同步加速器超高真空系统设计. 工程科学与技术. 2025(01): 339-346 .
2.	唐靖宇，周路平. 中国粒子加速器的发展现状和趋势. 原子能科学技术. 2022(09): 1735-1746 .