论文标题
高粒度量热仪不锈钢吸收剂对紧凑型恒温螺线管内部磁场的影响
Influence of the high granularity calorimeter stainless steel absorbers onto the Compact Muon Solenoid inner magnetic field
论文作者
论文摘要
紧凑型MUON电磁阀（CMS）检测器是在CERN的大型强子对撞机（LHC）上进行的通用实验设置，可研究质子 - 蛋白质碰撞中新颗粒的产生。获取的数据的第三次运行始于2022年4月，将持续到2025年底。然后，在漫长的关闭时间内，现有的CMS Hadron Endcap卡路里量表将用新的高粒度热量表（HGCAL）代替，该热量计（HGCAL）设计用于较高的LHC亮度。 HGCAL包含不锈钢吸收板，相对渗透率限制为1.05的值，这是对作用于这种略带磁性物质的电磁力的估计。为了排除带电粒子跟踪系统区域内磁通密度的可能扰动的惊喜，该附加材料对内部跟踪器内部磁场质量的影响以这种有限的不锈钢渗透性值进行了研究。 CMS磁铁的三维模型用于此目的。磁场双积分的方法表征了带电粒子动量分辨率的第一次应用于CMS检测器，并且在杂志出版物中进行了第一次描述。用这种方法获得的结果将详细介绍并讨论。
The Compact Muon Solenoid (CMS) detector is a general-purpose experimental setup at the Large Hadron Collider (LHC) at CERN to investigate the production of new particles in the proton-proton collisions at a centre of mass energy 13 TeV. The third run of the data taken is started in April 2022 and will continue till the end of 2025. Then, during a long shutdown time, the existing CMS hadron endcap calorimeter will be replaced with a new high granularity calorimeter (HGCal) designed for the higher LHC luminosity. The HGCal contains the stainless-steel absorber plates with a relative permeability limited by a value of 1.05 from estimation of the electromagnetic forces acting on this slightly magnetic material. To exclude the surprises with possible perturbation of the inner magnetic flux density in the region of the charged particle tracking system, an influence of this additional material onto the quality of the magnetic field inside the inner tracker volume is investigated at this limited value of the permeability of stainless steel . The three-dimensional model of the CMS magnet is used for this purpose. The method of the magnetic field double integrals characterizing the charged particle momentum resolution the first time is applied to the CMS detector and the first time is described in the journal publication. The results obtained with this method are presented in detail and discussed.
