大型强子对撞机上的CMS探测器

The compact muon solenoid(CMS) detector in the large hadron collider(LHC)

CMS探测器是大型强子对撞机(LHC)上的4个实验之一,它的设计思想是在质心能量为14TeV及积分亮度为1034cm-2s-1的条件下对质子-质子对撞进行研究.它的特点是非常紧凑,其μ子室几乎覆盖了4π立体角.另外,CMS探测器还有可提供超强磁场的超导磁铁和由超导磁铁环绕的径迹室以及电磁量能器和强子量能器.CMS探测器对于末态为电子、光子、特别是μ子的物理过程有很好的测量精度.

The compact muon solenoid detector is one of the four experiments on the Large Hadron Collider at CERN. It was conceived to study proton-proton collisions at a centre-of-mass energy of 14 TeV and at luminosities up to 1034 cm-2s-1. The detector is characterized by its high ompactness,with the muon chamber encompassing almost the entire 4π solid angle. A high-field superconducting solenoid surrounds a silicon tracker,an electromagnetic calorimeter,and a hadron calorimeter. The resolution is excellent for detecting processes which involve electrons,photons and especially muons in the final state.