Validation Of CEPC Detector’s Geometry Simulation

The Higgs particle is to explain the origin of particle mass of Standard Model in particle physics. And it is important for the development and exploration of the new physics. The European Nuclear Research Centre announced have observed two Higgs particle at the Large Hadron Collider of the ATLAS and CMS experiments in July 2012, whose mass near 125 Ge V. This achievement marks the completion of Standard Model(SM) and the beginning of a new era.Although the Higgs particle could be obtained, However, the current issues of new physics is need to be studied, such as the mechanism of Higgs and so on. Faced with the frontier problem, Chinese scientific community and high-energy physics community have concerned about the important physical problems at the first phase of LHC running. It is generally believed that Higgs Factory named CEPC-Spp C is need to be built to accurately measure Higgs.CEPC-Spp C is the Chinese energy particle collision in the future. CEPC will to be a Higgs factory to produce a large number of Higgs particles and accurately measure the properties of Higgs. And the measurements of other standard models can be performed in CEPC, such as Z particles and W particles. CEPC will be able to play an irreplaceable role in the search for new physics.The design and optimization of detector are the key to success of CEPC. The core issue is how to accurately measure the physical at the constraints of beam and cost in CEPC. Therefore, Geant4 simulation tools based on a full simulation are essential for optimization design of detector.Optimize the geometry of the detectors by Mokka and update the My SQL database can provide solutions for design detectors in the future. Currently have completed a preliminary simulation of CEPC each sub-detectors, and have had series simulated images of sub-detectors. Offer convenience for change parameters of the detectors and so on.