Speaker
Description
The Electron-Ion Collider (EIC) at the Brookhaven National Laboratory will study the collisions of polarized electrons with polarized protons and light ions as well as unpolarized heavy ions. The central tracker of the ePIC (electron-Proton/Ion Collider experiment) tracker is made up of barrel, forward, and backward detectors to achieve a wide pseudo-rapidity ($|\eta| <$ 3.5) coverage. On both sides of the central tracker, far-forward and far-backward detectors are located to track particles close to the beamline. The barrel region consists of three innermost silicon layers L0, L1, and L2 (referred to as the SVT inner barrel) with an ultra-low material budget based on silicon MAPS in 65 nm CMOS technology and a pixel pitch of $\rm \sim 20 ~\mu m$ to achieve a precise tracking and vertexing capability, two outer silicon layers (known as the outer barrel), an inner micro-pattern gas detector (MPGD) layer followed by a time-of-flight (TOF) layer and an outer MPGD layer. The forward region of the tracker has five silicon disks followed by two MPGD layers and a TOF layer, while the backward region is made up of five silicon layers followed by two MPGD layers. The experiment has a challenging environment due to the presence of the background radiation which will create the background hits on the tracker. Therefore, tracking will play a crucial role in selecting the real hits and avoiding these background hits during track finding and fitting using the timing information of the detectors. The studies utilize the modular ePIC software stack for simulation, reconstruction, and analysis. This presentation will provide an overview of the experiment and the layout of the ePIC tracker with the corresponding material budget. Further studies related to background simulations, tracking in ACTS software, and tracking performances using full and fast simulations will also be shown.
| Collaboration | ePIC Collaboration (Electron-Ion Collider Experiment) |
|---|---|
| Role of Submitter | I am the presenter |
