1. Tang Jingyu 3rd CEPC-SPPC Collaboration Meeting April 8-9, 2016, IHEP
SPPC Progress Report
Tang Jingyu
3rd CEPC-SPPC Collaboration Meeting
April 8-9, 2016, IHEP

2. Main topics General information Collider accelerator physics
Technical issues
Injector chain
R&D planning
About team and collaboration
Summary

3. General information
Since the last CEPC-SPPC study group meeting (Sep , 2016)
Work on collider accelerator physics continues
Work on technical issues advances slowly
Schemes on injector chain updated
New fund from MOST for CEPC-SPPC R&D hopeful, though little going to SPPC
Monthly group meeting maintained

4. Collider Accelerator Physics
General parameters: all AP members (Tang Jingyu coordinates).
Lattice design: three persons (Su Feng, Chen Yukai, Zhang Linhao) working on SPPC lattice
Race-track lattice to be compatible with CEPC partial double-ring
We do not need to by-pass the CEPC detectors
Different schemes (70, 100 TeV)

5. Collimation study: two persons (Zou Ye, Yang Jianquan) working on the study. Good progress has been made.
Combined transverse and longitudinal collimation in one long straight section
Franck Schmidt of CERN will visit IHEP to help SIXTRACK installation, and simulations

6. Instabilities: Liu Yudong continues to work on instabilities
Longitudinal dynamics: Peng Yuemei continues to work on it, with some help from Dai Jianping (especially on RF systems and injector accelerators)
Other topics: needing more volunteers or engaged persons to put more time on

7. Technical issues High-field superconducting magnets
Continuous efforts by Xu Qingjin and his group
Workshop on High-Temperature and High-Field Superconducting Materials and Application Technology will be held on April 28-29, 2016 in Shanghai
Beam screen and vacuum
Zhu Kun (and a PKU student) continues to study new schemes
Wang Yong (and students) studying SEY for different materials
RF systems
Dai Jianping is studying RF systems for both the collider and the injector accelerators
Other technical issues
Needing motivation and funds

8. Injector chain More efforts have been made in the injector chain
Updating the accelerator schemes and parameter lists
p-Linac/i-Linac: Lu Yuanrong is working on the survey and first design
p-RCS: Tang Jingyu is working on the first design concept
MSS: no new report from the student
SS: Wang Xiangqi and students have made large effort in the first design concept

9. R&D planning
We need long-term R&D efforts to meet the requirements for building SPPC; some of key technologies are extremely challenging.
Both funds and manpower are needed
CEPC-SPPC management is making efforts to obtain the first R&D fund from MOST, SPPC is only a small part of the package; hopefully in the second MOST R&D, there will be much higher weight for SPPC .
Paper work on key issues should be pursued, to learn the technical progress and tendency around the world; to provide evidence support for the future R&D applications

10. About team and collaboration
SPPC study team is still growing. Welcome to new comers
CEPC-SPPC is discussing to form an international collaboration structure. We will fit us within the frame.

11. Summary We are making progress on SPPC study steadily.
Study team gradually building up, but more people are welcomed.
As no large funds for key R&D efforts, study will be focused on paper work.
Once the international collaboration structure is formed, there will be more efficiency organization of the study.
We should work together for the CDR report by end 2016.

12. Welcome comments!