Speaker
Description
The Apparatus for Mesons and Baryon Experimental Research (AMBER, NA66) is a high-energy physics experiment at CERN’s M2 beam line. Its broad physics program extends beyond 2032. Several upgrades of the spectrometer are planned for the medium and long-term AMBER program among those the existing Multi-Wire Proportional Chambers (MWPCs) will be replaced to address their structural aging and performance limitations. Resistive bulk MICRO-MEsh-GAseous Structure (MM) detectors with an active area of 1x0.5 m^2 will be used for the task. Each detector has two readout planes in a face-to-face configuration and a common cathode providing an XUV measurement. For the lateral modules a uniform 10MOhm/sq Diamond-Like Carbon (DLC) layer was chosen. The chambers are the largest resistive bulk MM under test. The production of the first detector was completed in October 2024, a test campaign both with beam and cosmics is underway at AMBER experiment. The design together with the ongoing work on the detector noise studies and first test results will be presented.
