| CMS Note | |
| Report number | CMS-CR-2020-224 |
| Title | Track-based muon system alignment of the CMS detector |
| Author(s) | Kim, Hyun Yong (Texas A-M) |
| Publication | 2020 |
| Collaboration | CMS Collaboration |
| Imprint | 06 Nov 2020 |
| Number of pages | 7 |
| Presented at | 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Keywords | Muons |
| Abstract | The alignment of the CMS muon detector is critical to maintaining accurate position determination of muon hits, thereby affecting momentum resolution and the sensitivity of physics analyses involving muons in the final state. Muon track data from both the muon system and the inner tracker is used to perform a multidimensional fit on the misalignment degrees of freedom. The performance of this track-based alignment algorithm is validated by using muons in Z boson decays and evaluating the alignment's accuracy in reconstructing the mass peak. Chamber alignment accuracies on the order of 100 $\mu m$ are achieved and alignment performance is presented using Run 2 data. |
Rekord stworzony 2021-12-10, ostatnia modyfikacja 2021-12-10
