Bochum 2018 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 28: Instrumentation X
HK 28.1: Vortrag
Dienstag, 27. Februar 2018, 16:30–16:45, HZO 90
DIRC-based PID for the EIC Central Detector — •Roman Dzhygadlo1, Klaus Peters1,2, Carsten Schwarz1, and Jochen Schwiening1 for the DIRC-at-EIC collaboration — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 2Goethe-Universität Frankfurt
The physics program for the Electron-Ion Collider (EIC) detector requires charged Particle Identification (PID) (e/π, π/K, K/p) over a wide momentum range. It is expected that the PID system will need to include one or more Cherenkov counters to achieve this goal. A radially compact DIRC (Detector of Internally Reflected Cherenkov light) counter is an attractive option in barrel region.
The ongoing R&D investigates ways to extend the momentum coverage of a DIRC counter for the EIC detector beyond the current state-of-the-art with clean π/K separation up to at least 6 GeV/c. Possible design improvements include a complex imaging system, comprising multi-component spherical lenses, a compact fused silica expansion volume, and multi-anode sensors with smaller pixels, providing fast single-photon timing in high magnetic fields, a time-based PID algorithm, and chromatic dispersion mitigation.
We will discuss the current status of the design studies with Geant simulations, improvements to the time-based imaging reconstruction, and the results of prototype tests with particle beams at CERN.
This work was supported in part by BNL under eRD4 and eRD14.