中国散裂中子源DTL漂移管的预准直
第40卷 第5期 核 技 术 V ol.40, No.5 2017年5月 NUCLEAR TECHNIQUES May 2017
—————————————— 第一作者：何振强，男，1987年出生，2012年于北京化工大学获硕士学位，工程师，现主要从事粒子加速器准直测量方面的研究工作
收稿日期：2017-01-13，修回日期：2017-02-15
First author: HE Zhenqiang, male, born in 1987, graduated from Beijing University of Chemical Technology with a master’s degree in 2012, engineering,
focusing on the survey and alignment of particle accelerator
Received date: 2017-01-13, accepted date: 2017-02-15 050201-1
中国散裂中子源DTL 漂移管的预准直
何振强1,2 柯志勇1,2 董 岚1,2 马 娜1,2 门玲鸰1,2 梁 静1,2
罗 涛1,2 王 铜1,2 张晓辉1,2
1（中国科学院高能物理研究所 北京 100049）
2（东莞中子科学中心 东莞 523803）
摘要 漂移管直线加速器(Drift Tube Linac, DTL)是中国散裂中子源(China Spallation Neutron Source, CSNS)直
线加速器的主要部分，负责将脉冲流强为15 mA 的负氢离子从3 MeV 加速到80 MeV ，再注入到快循环同步
加速器(Rapid Cycling Synchrotron, RCS)中实现进一步加速。DTL 加速器本身技术工艺复杂，要求极高的加工
精度和准直安装精度，是CSNS 的关键技术之一。本文介绍了中国散裂中子源漂移管的预准直方法，从最初
的预研到正式安装，解决了一系列难题，包括漂移管的标定、安装和准直调整，形成一整套流水线式的预准
直流程，最终漂移管预准直的精度优于物理设计指标，可为同类别的准直测量提供参考。
关键词 中国散裂中子源，漂移管，预准直，激光跟踪仪
中图分类号 TL53
DOI: 10.11889/j.0253-3219.2017.hjs.40.050201
Pre-alignment of DTL for China Spallation Neutron Source
HE Zhenqiang 1,2 KE Zhiyong 1,2 DONG Lan 1,2 MA Na 1,2 MEN Lingling 1,2 LIANG Jing 1,2
LUO Tao 1,2 WANG
Tong 1,2 ZHANG Xiaohui 1,2 1(Insititute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049, China )
2(Dongguan Neutron Science Center , Dongguan 523803, China )
Abstract Background: The drift tube linac (DTL) is the main part of China Spallation Neutron Source (CSNS),
which can provide 15-mA peak current beam with energy gain from 3 MeV to 80 MeV . And then the beam will be
injected into the rapid cycling synchrotron (RCS) for further accelerating. Purpose: The manufacturing and
fabrication of DTL cavity and drift tubes is very complicated, which requires high processing precision and
installation accuracy. In this paper, the pre-alignment of DTL was introduced. Methods: We overcame a lot of
difficulties in this process, including the fiducialization, installation and alignment. By distributing the error properly
and following the regular pre-alignment process, this work was finally finished on time. Results: The pre-alignment
accuracy was better than the requirement tolerance which is 0.05 mm in three directions. Conclusion: The results
show that the pre-alignment is successful. This job can provide some experiences to other alignment measurement
with the same process.
Key words CSNS, Drift tube, Pre-alignment, Laser tracker
中国散裂中子源(China Spallation Neutron
Source, CSNS)是我国“十一五”期间重点建设的大
科学装置，已列入国家中长期科学和技术发展规划。
经国务院批准，将建造一个质子束功率达100 kW 、有效脉冲中子通量居世界前列的散裂中子源装置。装置建设的主要内容包括：一台H ?直线加速器、一
万方数据