China builds a particle collider that is nearly four times larger than the Large Hadron Collider (LHC) and is expected to produce over one million Higgs boson particles during its first decades of operation. Plans for Circular Electron Positron Collider (CEPC) – A 62 mil long collider-was first announced in 2012, a few months after the Higgs boson particle was discovered at LHC. Now, researchers working on the project have released two new design reports to show what they have been working on in the last six years and what they plan to do in the coming decades. The report shows how CEPC dwarfs LHC, which has a circumference of just under 17 miles. It describes how it could go beyond LHC’s ability in terms of physical tests that can be performed over 1
0 years, researchers say it will be able to produce one million Higgs bosons, 100 million W bosons, and a trillion Z bosons. The Large Hadron Collider, pictured October 11, 2014. Thomas Cizauskas / Anthos Media / Flickr Like the LHC, CEPC is circular in shape. It will be in a subway and consists of a linear accelerator, a damping ring, a booster, transport lines and a collider. It will be a double ring collider, with electron and positron beams that circulate in opposite directions in separate tubes. The tunnel as it is inserted can also be used to host a Super Proton Proton Collider (SppC) – a proposal currently under consideration. This supercollider would reach energies far beyond the LHC-LHC were designed to have a maximum collision energy of 14 TeV, while the SppC would operate with an energy of 70 TeV. “The conceptual design report means that we have carried out the basic design of accelerator, detector and civil engineer for the entire project,” said Professor Gao Yuanning, chairman of CEPC’s institutional board. “Our next step will focus on research and development of key technologies and prototypes for CEPC. “The design report was announced at the Beijing Institute of High Energy Physics (IHEP) .Geoffrey Taylor ceremony at the University of Melbourne, chairman of the International Committee for Future Accelerators (ICFA) and the Asian Committee for Future Accelerators (ACFA) said: “This is an important milestone along the way to such an important facility for basic physics. I do not doubt that the international community is looking forward to cooperating with the CEPC’s development and operations and in the effort to better understand the basic elements of the matter. “In the next five years, researchers will conduct extensive research, build prototypes of key technical components for CEPC. The infrastructure for collider will also be built. The construction of CEPC is expected to start in 2022 and will be completed by 2030. Should CEPC be successful, scientists hope that the SppC supercharger could work sometime in the 2030s. “As a cross-machine, SPPC can detect a whole new set of particles, says the new report. “Dark matter is still one of the most puzzling issues in particle physics and cosmology. Weak interactive massive particles (WIMPs) are still the most credible dark material candidates.” SppC, says researchers, can be used to “significantly expand” the search for WIMPs, which possibly provides answers to one of the greatest mysteries in the universe.
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