1. Possibility of China to collaborate and modality
Launch of CERN-China IHEP collaboration for HiLumi LHC
Possibility of China to collaborate and modality
Jianfeng Li, Chao Li (WST, Xi’an)
Kun Lu, Kaizhong Ding (ASIPP, Hefei)
Qingjin XU (IHEP, Beijing)
Mar 7, 2017

2. Outline The Related R&D Experiences and Interests in China
Present plan for HL-LHC collaboration
CCT corrector magnet
HTS current leads
Plan for the near future

3. Related R&D Experiences and Interests in China
Superconducting accelerator magnets:
WST
Some experiences on NbTi-based accelerator magnets including a prototype CCT magnet for IMP (Lanzhou), and solenoid magnets for FRIB project (USA).
Agreed to fabricate a proto-type CCT correct magnet for HL-LHC.
IHEP
A small team with limited funding is working on the R&D of high field dipole magnets (Nb3Sn & HTS) for CEPC-SPPC pre-study.
No special funding available for HL-LHC collaboration presently, but we hope to get a new funding soon, to cover some more contributions to HL-LHC, like 11-T Nb3Sn dipole.
Current leads
ASIPP:
Some experiences on the HTS current leads development for ITER project. Agreed to fabricate a HTS current lead for HL-LHC.

4. Related R&D Experiences and Interests in China
Role of IHEP for HL-LHC collaboration in China
With the assumption that CERN will sign “contract” with IHEP only
Now: help WST and ASIPP to get the necessary and correct information from CERN for the fabrication of CCT magnet and HTSCL, and ensure the work can be finished in time and in the right way.
Future: Try to get the special funding from the Chinese funding agency and lead more activities for the HL-LHC collaboration.
Benefit we are expecting from the HL-LHC collaboration
Speed up the R&D process of the high field accelerator magnet technology in China.

5. Outline
General introduction to the related R&D experiences and interests in China
Present plan for HL-LHC collaboration
CCT corrector magnet
HTS current leads
Summary

6. History of Wire Development at WST
WST was established in 2003, qualified manufacturer of NbTi and Nb3Sn superconducting wires for ITER.
ITER: 180 t NbTi strand
30 t Nb3Sn strand
NbTi and Nb3Sn superconducting wires

7. History of Magnet Development at WST
Magnet Factory was established in 2011, mainly working on the development of superconducting magnets for accelerator and industry.
We made over 100 sets magnets for the accelerator facility such as FRIB, ADS,HIAF, and also HTS magnet with diameter 2m.

8. CCT magnet Development for IMP
Winding
Assemble with Yoke
Over Bonding
We designed a prototype CCT magnet for IMP with CACC cable developed at WST to verify the feasibility of the program. They will test it this year.

9. Plan for HL-LHC Requirement Schedule
WST would like to start the contribution from the manufacturing of one prototype of CCT magnet for HL-LHC within 7 months.

10. Foundation of CCT Magnet Development
8 sets winding machine
2 furnace for impregnation
Test system for magnet
Dewar System with Φ550 andΦ400mm

11. Wire and Magnet Team Jianfeng Li: Project Management
Yigong Shi: Wire Design
Chao Li: Magnetic Field Design
Peng Ma: Mechanical Design
Lingxiao Li: Cryogenic Design
Zhengfu Ge: Protection Design
Tao Zhou: Manufacture Support

12. Outline
General introduction to the related R&D experiences and interests in China
Present plan for HL-LHC collaboration
CCT corrector magnet
HTS current leads
Summary

13. History of HTSCL Development at ASIPP
EAST TF 16.5 kA current lead
EAST HTS pulsed current lead
ITER 68/55 kA HTS trial current lead
ITER CC 10kA trial current leads
Russia JINR 21 kA HTS current leads
HFL 40 T hybrid magnet 16 kA HTS current leads
66 ITER 68/55/ 10kA HTS leads
2005
2008
2012
2007
2010
2013
2015
2016
GA feeder 55 kA HTS leads

14. Foundation of HTSCL Development
Professional manufacturing and assembly line for all components of HTSCL
He cryogenic system and 100kA Power supply system for HTSCL cold test
CODAC system follow ITER standard for HTSCL test
ITER standard DC, PD and Paschen tight HV test platform for HTS current leads and joint
CODAC system for cold test
Paschen tight HV test platform

15. Plan for HL-LHC
ASIPP would like to start the contribution from the manufacturing of one prototype of HTS current lead for HL-LHC within one year.
Rough schedule of one HTSCL prototype:
2-3 month to discuss and review the design and interface of HTS current leads with CERN.
~3 month to prepare the document and manufacture drawing.
4~5 month to manufacture and assembly.
~1 month to test and result analysis.

16. HTS Current Lead Team
All the KEY team members have the rich experiences of ITER HTS current leads and more than 10 years works on the HTS current lead developments
Kun Lu
Ph.D, Associate Professor.
Leader of the department ……
Responsible for the design and manufacture
Responsible for the test
Responsible for the insulation
Xiongyi Huang
Ph.D. Associate Professor
Be responsible for the superconducting joint technology development.
Kaizhong Ding
Ph.D. Associate Professor
Be responsible for the test and control strategy
Qingqing Du
Master
Be responsible for the test campaign
Xiaowu Yu
Ph.D, Associate Professor
Be responsible for the insulation technology development.
Chenglian Liu
Ph.D, Associate Professor
Be responsible for design and technology development …… …… ……

17. Summary
IHEP, WST and ASIPP are happy to join the HL-LHC collaboration.
We hope to get special funding soon from Chinese funding agency for this collaboration.
We are looking forward to a fruitful collaboration between HL-LHC and China
And both sides should benefit greatly from the collaboration.