Speaker
Description
The Electron Ion Collider(EIC) at Brookhaven National Laboratory is designed to study the nuclear structure with an unprecedented precision, shading light on confinement and on the intriguing behavior of QCD in the non-perturbative regime. ePIC is the first large acceptance detector that will be located at the Interaction Point (IP6). Its tracking system is composed of Silicon trackers and Micro Pattern Gaseous Detectors (MPGD), the latter implementing both the μ-RWELL and micromegas technologies.
The trackers covering the area of the detector with pseudo-rapidity |η|>2 include the Endcap Trackers, two pairs of GEMμ-RWELL disks, one in the leptonic region and one in the hadronic region.
The new technology GEMμ-RWELL is an hybrid configuration able to reach gains above 10^4, thanks to the presence of a single GEM layer to pre-amplify the signal. The design foresees a conversion gap of 3−6mm, a transfer gap of 2−3mm, while a 2D strip ”COMPASS-like” readout of 500 μm pitch, guarantees a spatial resolution better than 150 μm even for curved tracks.
GEMμ-RWELL prototypes of 10x10cm2 active area will be tested in November 2024 at PS-T10 East Area at CERN. The goal of the test beam is to measure the spatial resolution and efficiency, exploring different angles between the incident beam and the active area, compatibly with the ePIC requirements. The events will be reconstructed both with charge centroid method and with a μTPC algorithm, to study the position resolution optimization.
| Primary experiment | ePIC |
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