Beam loss background with magnet errors and beam–beam effect in CEPC.

The Circular Electron Positron Collider (CEPC) is a proposed Higgs factory with center-of-mass energy of 240 GeV to measure the properties of Higgs boson and test the standard model accurately. Beam loss background in detectors is an important topic at CEPC. During manufacture and installation, magnets are not perfect and with many kinds of errors. Beam–beam interaction in high-energy electron positron collider is the action of external field force, which changes the momentum of each beam bunch. Thus, beam loss background can be affected by the magnet errors and beam–beam effect. In this paper, the beam loss background with magnet errors and beam–beam effect is simulated in CEPC. [ABSTRACT FROM AUTHOR]