Indico is back online after maintenance on Tuesday, April 30, 2024.
Please visit Jefferson Lab Event Policies and Guidance before planning your next event:

Jul 29 – 30, 2021
Online Only
US/Eastern timezone

High-performance DIRC detector for the future Electron-Ion Collider

Jul 29, 2021, 11:45 AM
Online Only

Online Only


Dr Nilanga Wickramaarachchi (The Catholic University of America)


Excellent particle identification (PID) is one of the key requirements for the central detector of the Electron-Ion collider (EIC). Identification of the hadrons in the final state is important to study how different quark flavors contribute to nucleon properties. A detector with a radial size of only 7-8 cm, which uses the principle of Detection of Internally Reflected Cherenkov light (DIRC), is a very attractive solution to meet these requirements. The R$\&$D program performed by the EIC PID collaboration (eRD14) is focused on developing a high-performance DIRC (hpDIRC) detector that would primarily extend the momentum coverage well beyond the state-of-the-art 3 standard deviations or more separation of $\pi/K$ up to at least 6 GeV/$c$ in the polar angle range $30^{\circ}-145^{\circ}$. Additionally it is expected to provide separation power for p/K up to 10 GeV/$c$, and low momentum e/$\pi$. The key element of the hpDIRC detector is a custom-made 3-layer compound lens used to focus Cherenkov photons produced by charged tracks to small pixel-size photo-sensors leading to measure the position and time of the photons with great precision and finally identify the charged particle. In this talk an overview of the hpDIRC detector development will be presented as an example of wide range of research opportunities during the R$\&$D phase.

Primary author

Dr Nilanga Wickramaarachchi (The Catholic University of America)


Dr Grzegorz Kalicy (The Catholic University of America)

Presentation materials