China is building a particle collider nearly four times larger than the Large Hadron Collider (LHC) and is expected to produce more than one million Higgs boson particles during its first decade of operation.
The plans for the Positron Electron Circular Collider (CEPC) – a 62-mile collider – were announced for the first time in 2012, a few months after the Higgs boson particle was discovered in the LHC. Now, researchers working on the project have launched two new design reports to show what they have been working in the last six years and what they plan to do during the next decades.
The report shows how the dwarf CEPC is the LHC, which has a circumference of just under 17 miles. It describes how it can go beyond the capacities of the LHC in terms of physical experiments that can be carried out more than 10 years ago, scientists say it will be able to produce a million Higgs bosons, 100 million W bosons and a trillion of bosons Z.
Like the LHC, the CEPC has a circular shape. It will be located in an underground tunnel and consists of a linear accelerator, a damping ring, a reinforcement, transport lines and a collider. It will be a double ring collider, with electron beams and positron that circulate in opposite directions in separate tubes.
The tunnel in which it is based could also be used to host a proton protons Super Coloid (SppC), a proposal for which it is currently under consideration. This "# ~" supercollider & # 39; It would reach energies far beyond the LHC: the LHC was designed to have a maximum collision energy of 14 TeV, while the SppC would work with an energy of 70 TeV.
"The Conceptual Design Report means that we have met the basic design of the accelerator, detector and civil works for the entire project," said Professor Gao Yuanning, president of the CEPC Institutional Board. "Our next step will focus on the research and development of key technologies and prototypes for the CEPC."
The design report was announced at a ceremony held by the Institute of High Energy Physics (IHEP) in Beijing.
Geoffrey Taylor of the University of Melbourne, president of the International Committee of Future Accelerators (ICFA) and the Asian Accelerators' Committee (ACFA), said: "This is an important milestone along the way to such an important installation for fundamental physics. I do not doubt that the international community hopes to associate itself with the development and operation of the CEPC and in seeking to better understand the basic constituents of the subject. "
Over the next five years, scientists will conduct extensive research, creating prototypes of key technical components for the CEPC. The infrastructure for the collider will also be built. CEPC construction should begin in 2022 and will be completed in 2030.
If the CEPC were successful, scientists expect the SppC supercollider to work sometime in the 2030s. "As an energy frontier machine, SPPC could discover a whole new set of particles," says the new report. "Dark matter remains one of the most disconcerting problems in particle physics and cosmology. Massive particles (WIMPs) that weakly interact with are still the most plausible dark matter candidates." SppC, researchers say, could be used to "substantially expand" the search for WIMPs, potentially providing responses to one of the greatest mysteries of the universe.