We present a novel two‐stage particle‐identification (PID) workflow for the ePIC Barrel Imaging Calorimeter (BIC) at the future Electron–Ion Collider. In the first stage, we exploit the classical calorimeter‐to‐track energy ratio E/p (optimally summing energy across the first eight SciFi layers) to achieve a 97 % electron efficiency and a pion rejection factor R_π≈23.5. In the second stage, we...
In February 2025, a prototype for the ePIC Electron Endcap Electromagnetic Calorimeter (EEEMCal) was tested at the DESY II Test Beam Facility in Hamburg, Germany. The prototype consisted of 25 lead-tungstate ($\hbox{PbWO}_4$) crystals with an SiPM readout. Each crystal was instrumented with 16 SiPMs, read out either individually, with four in parallel, or with all 16 in parallel by the...
The Electron-Ion Collider is an in-development facility that will enable further experimental study of the properties and behavior of fundamental and hadron-scale particles. In order for this project to proceed optimally, considerable efforts are required to design detectors and other equipment suitable to the physics specifications set for the Electron-Ion Collider. One of many planned...
We have measured the flavor dependence of charged pion multiplicities in SIDIS from proton and deuterium targets to explore charge symmetry violation in pion fragmentation functions. The data were collected using 10.2 and 10.6 GeV electron beams in Hall C at Jefferson Lab. The same data set also contains high-momentum protons from SIDIS events, which we are now analyzing to extract proton...
