Speaker
Dr
Mehmet Ozgur Sahin
(CEA Saclay Irfu)
Description
The Compact Muon Solenoid (CMS) detector at the CERN Large Hadron Collider (LHC) is undergoing an extensive Phase-II upgrade program to cope with the challenging conditions of the future High-Luminosity LHC (HL-LHC). There will be a significant increase in the expected number of simultaneously occurring, separate events (pile-up) at the HL-LHC. The new CMS timing detector will enable us to measure minimum ionizing particles (MIP) with a time resolution of 30-50 ps with a hermetic coverage up to a pseudo-rapidity of |η|=3 during its lifetime. Such a high precision timing information will be used to mitigate the impact of the pile-up events by employing four dimensional reconstruction algorithms. It will also extend the physics reach of the detector by enabling searches for the long-lived particles predicted in different beyond the Standard Model scenarios. The MIP timing detector consists of a single layer LYSO crystals readout with SiPMs in the central region (barrel) and two Low Gain Avalanche Diode detector layers in both end-caps of the CMS detector. This talk is organized in four parts: the physics case for the MTD will be discussed in the first part of the talk, which will be followed by the description of the barrel and endcap timing layers, the final part will be dedicated to the distribution of the timing synchronization (LHC clock) and the data acquisition system of the MTD.
Primary author
Dr
Mehmet Ozgur Sahin
(CEA Saclay Irfu)
