I welcome you in the final part of the Higgs questions.
8. What is the “CEPC+SppC” solution?
After the Higgs particle was discovered, our scientists proposed in September 2012 to build the next-generation ring-shaped electron-positron collider (CEPC) and transform it into a super proton collider (SppC) in a timely manner, namely “CEPC+SppC”. The plan has caused great repercussions in the international arena. In the first phase of the project, a circular positive and negative electron collider with a circumference of 50-70 km and an energy of 250 GeV was built as a Higgs particle factory. In the second phase, a 50-70 TeV proton collider was built in the same tunnel. The Nuclear Hadron is running a large Hadron Collider LHC seven times higher, studying new physics through high energy particle collisions.
The idea of a large circular accelerator CEPC and SppC. Image Source and Copyright: High Energy Institute
The opportunity to build CEPC is the history of China's favor. If CEPC can start construction around 2021, the construction period will be 7-8 years, and it will start running in 2028. Experiments can be carried out almost simultaneously with the international linear collider. With the advantage of CEPC, it is very likely that we will get ahead of the new physical exploration beyond the standard model and the accurate measurement of the standard model, and achieve internationally significant breakthroughs in physical results.
The 50-100 TeV energy zone is the energy zone that scientists are most looking forward to and is likely to find new physics beyond the standard model. It will be implemented on the Super Proton Collider SppC. SppC is also the ultimate goal of the next generation of accelerator design.
The implementation of the program will use and develop the world's most advanced accelerator-related technologies, such as machinery, electronics, vacuum, RF microwave, cryogenic superconductivity, radiation protection, computer and network technologies, which can greatly promote the development of related fields and drive the country. The overall level of technology has improved.
9. What are the physical goals of CEPC and SppC?
The main scientific goal of the Circular Positive and Negative Electron Collider (CEPC) is to use the positive and negative electron collisions near the center of mass energy 250GeV to generate a large number of clean and accurate examples of the Higgs particle, so as to accurately measure its properties and confirm whether the particle is a standard model. The predicted Higgs boson, and through it to deeply study the basic problems of the spontaneous weak symmetry spontaneous breaking mechanism and the origin of quality, looking for clues of new physics beyond the standard model.
The main scientific goal of the Super Proton-Proton Collider (SppC): Dedicated to new discoveries, through high-energy proton collisions, looking for new particles and new physical phenomena beyond the standard model, understanding the nature of dark matter and dark energy in the universe, and so on.
10. What is the international competition situation of the ultra-high-energy collider in the future?
High energy is at the forefront of the development of particle physics. In order to lead the new era of particle physics, the competition for the construction of ultra-high-energy colliders has quietly unfolded. The internationally-developed program is in addition to the "Cycle Electron Collider + Super Proton Collider" proposed by Chinese scientists (CEPC+ SppC), as well as the International Linear Collider (ILC), Compact Linear Collider (CLIC), Large Positive and Negative Electron Collider (LEP3), Very High Energy Large Positive and Negative Electron Collider (TLEP), Future Ring Collider (FCC), Super Large Hadron Collider (VLHC), Scorpion Collider (MC), etc.
These ideas have their own advantages, but after careful analysis, CEPC+SppC has comprehensive advantages in terms of richness, expandability, technical feasibility, economy and cost performance of scientific goals, and is in a leading position in the world.
The construction of CEPC is a dream of China's particle physics community. It is an opportunity for China to become an international high-energy physics center. It is an important aspect and symbol of China's leading international science and technology. It will definitely be very important for human beings to explore the unknown world. A far-reaching contribution.
How is the world we exist formed in the end? Once humans begin to ask questions, they are destined to embark on the journey of pursuing their dreams, and they are destined not to stop. This world is full of wonders because of the unknown, and this is where her charm lies.