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 and comprises measurements of the anti-proton production cross-section on He, proton, and Deuterium, charge-radius of the proton and Kaon and Pion PDFs using Drell-Yan process. 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. We have chosen resistive bulk MICRO-MEsh-GAseous Structure (MM) detectors with an active area of 1x0.5 m^2 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 in operation.
The production of the first detector was completed in October 2024, a test campaign both with beam and cosmics is underway at AMBER experiment.
Leveraging results gained from prior tests of smaller MM prototype a new 64-channel mixed-signal front-end Application Specific Integrated Circuit (ASIC) for time and energy measurements is under development at INFN sez. Torino.
The ongoing work on the detector and on the front-end electronics based on the new ToRA (Torino Readout for AMBER) ASIC, will be presented.
| Primary experiment | AMBER (NA66), MM design group |
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