无氧铜表面处理在束流准直器中的应用

余洁冰; 谭彪; 康玲; 刘磊; 王鹏程; 翁旭东; 陈佳鑫; 聂小军; 王广源; 王明; 宁常军; 刘仁洪; 张俊嵩; 于永积

doi:10.11884/HPLPB202335.230129

无氧铜表面处理在束流准直器中的应用

doi: 10.11884/HPLPB202335.230129

余洁冰^{1, 2, 3,},
谭彪^{1, 2, ,},
康玲^{1, 2},
刘磊^{1, 2},
王鹏程^{1, 2},
翁旭东⁴,
陈佳鑫^{1, 2},
聂小军^{1, 2},
王广源^{1, 2},
王明^{1, 2},
宁常军^{1, 2},
刘仁洪^{1, 2},
张俊嵩^{1, 2},
于永积^{1, 2}

1.
中国科学院高能物理研究所，北京 100049
2.
散裂中子源科学中心，广东东莞 523803
3.
中国科学院大学，北京 100049
4.
合肥科烨电物理设备制造有限公司，合肥 230031

基金项目: 国家自然科学基金项目（11975253，12105296）；广东省自然科学基金项目（2018A030313959）

详细信息

作者简介:
余洁冰，yujb@ihep.ac.cn

通讯作者:
谭　彪，tanbiao@ihep.ac.cn。

中图分类号: TL503.7；O328
计量
- 文章访问数: 247
- HTML全文浏览量: 84
- PDF下载量: 75
- 被引次数: 0
出版历程
- 收稿日期: 2023-05-12
- 修回日期: 2023-08-11
- 录用日期: 2023-08-25
- 网络出版日期: 2023-10-09
- 刊出日期: 2023-10-08

Application of oxygen-free copper surface treatment in beam collimator

Yu Jiebing^{1, 2, 3
,},
Tan Biao^{1, 2
, ,},
Kang Ling^{1, 2},
Liu Lei^{1, 2},
Wang Pengcheng^{1, 2},
Weng Xudong⁴,
Chen Jiaxin^{1, 2},
Nie Xiaojun^{1, 2},
Wang Guangyuan^{1, 2},
Wang Ming^{1, 2},
Ning Changjun^{1, 2},
Liu Renhong^{1, 2},
Zhang Junsong^{1, 2},
Yu Yongji^{1, 2}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
Spallation Neutron Source Science Center, Dongguan 523803, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China
4.
Hefei Keye Electrical Physical Equipment Manufacturing Co., Ltd, Hefei 230031, China

摘要

摘要: 束流准直器作为加速器的关键部件，用于吸收不在预定轨道的束晕粒子。因良好的电导率和良好的准直效率，铜被广泛应用于准直器中作为挡块材料。通常，挡块位于超高真空环境中，承受高功率束流载荷冲击，其不同表面处理工艺直接影响传热性能及放气率。为评估无氧铜表面处理工艺对相关性能的影响，分别对其进行表面化学腐蚀发黑处理、高温氧化处理以及仅机械加工处理，结果表明：无氧铜表面发黑处理后，其热辐射系数明显增加，同时也伴随着放气率的明显增加；而通过高温氧化处理后的铜块，其表面热辐射系数与仅机械加工后的铜块差异不大，放气率有一定程度的增加。以散裂中子源二期项目中的动量准直器为研究对象，在一定的束流载荷作用下，挡块选用发黑无氧铜，可将其最高温度控制在125 ℃以下，同时增加两台离子泵可使该准直器所在区域真空度满足运行要求。
- 束流准直器 /
- 无氧铜 /
- 表面处理 /
- 热辐射系数 /
- 表面放气率
Abstract: As a key component of accelerators, beam collimators are used to absorb the beam halo particles that are not in the predetermined orbit. Due to its good conductivity and collimation efficiency, copper is widely used in beam collimators as the absorber material. In general, absorbers are located in ultra-high vacuum environment, and also loaded with high beam power, different surface treatment processes of the absorber will directly affect its heat transfer performance and vacuum performance. To evaluate the effect of the surface treatment of oxygen-free copper, the surface chemical corrosion blackening treatment, high temperature oxidation treatment and mechanical processing treatment are carried out respectively. The test results show that the thermal radiation coefficient and outgassing rate of copper blocks are increased obviously with surface blackening, however, the surface heat radiation coefficient of the copper blocks after high temperature oxidation is close to that of the machined copper block, while the outgassing rate increases a little. Taking the CSNS-II momentum collimator as the research object, with the beam load, blackening oxygen-free copper is used as the absorber, the maximum temperature can be controlled below 125 ℃, and the pressure of the collimator can meet the operation requirements by adding two ion pumps.
- beam collimator /
- oxygen-free copper /
- surface treatment /
- thermal radiation coefficient /
- outgassing rate

HTML全文

图 1 制备的3种无氧铜样品

Figure 1. Oxygen-free copper samples

下载: 全尺寸图片幻灯片

图 2 3种无氧铜样品在不同温度下的热辐射系数

Figure 2. Emissivity of three oxygen-free copper samples at different temperatures

下载: 全尺寸图片幻灯片

图 3 发黑无氧铜样品表面放气率测试

Figure 3. Test of the outgassing rate of blackened oxygen-free copper sample

下载: 全尺寸图片幻灯片

图 4 三种无氧铜样品表面放气率测试结果

Figure 4. Outgassing rate of the three oxygen-free copper samples

下载: 全尺寸图片幻灯片

图 5 不同表面处理下的动量准直器挡块温度分布云图

Figure 5. Temperature distribution of the collimator absorber with different surface treatment

下载: 全尺寸图片幻灯片

图 6 R₁区段离子泵及冷阴极规分布

Figure 6. Distribution of the ion pumps and cold cathode gauges in R₁ section

下载: 全尺寸图片幻灯片

图 7 不同情况下1/2的R₁区段真空度分布

Figure 7. Distribution of pressure in half of the R₁ section with different conditions

下载: 全尺寸图片幻灯片

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