Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (5): 50201-050201.doi: 10.11889/j.0253-3219.2017.hjs.40.050201

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Pre-alignment of DTL for China Spallation Neutron Source

HE Zhenqiang1,2, KE Zhiyong1,2, DONG Lan1,2, MA Na1,2, MEN Lingling1,2, LIANG Jing1,2, LUO Tao1,2, WANG Tong1,2, ZHANG Xiaohui1,2   

  1. 1 Insititute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
    2 Dongguan Neutron Science Center, Dongguan 523803, China
  • Received:2017-01-13 Revised:2017-02-15 Online:2017-05-10 Published:2017-05-03
  • Contact: 10.11889/j.0253-3219.2017.hjs.40.050201

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

CLC Number: 

  • TL53