1. Resistive plate chambers for precise measurement of high-momentum protons in short range correlations at R[formula omitted]B.
- Author
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Xarepe, M., Aumann, T., Blanco, A., Corsi, A., Galaviz, D., Johansson, H.T., Linev, S., Löher, B., Lopes, L., Michel, J., Panin, V., Rossi, D., Saraiva, J., Törnqvist, H., and Traxler, M.
- Subjects
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RADIOACTIVE nuclear beams , *NUCLEAR matter , *PROTONS , *EXOTIC nuclei , *RELATIVISTIC energy , *SPRING - Abstract
The Reactions with Relativistic Radioactive Beams (R 3 B) collaboration of the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, has constructed an experimental setup to perform fundamental studies of nuclear matter, using as a probe reactions with exotic nuclei at relativistic energies. Among the various detection systems, one of the most recent upgrades consists of the installation of a large area, around 2 m 2 , multi-gap Resistive Plate Chamber (RPC). The chamber is equipped with twelve 0. 3 mm gaps and readout by 30 mm pitch strips, exhibiting a timing precision down to 50 ps and efficiencies above 98% for minimum ionizing particles in a previous characterization of the detector. The RPC was part of the setup of the FAIR Phase 0 experiment that focused on measuring for the first time, in spring 2022, nucleon–nucleon short-range correlations (SRC) inside an exotic nucleus (16C). The excellent timing precision of this detector will allow the measurement of the forward emitted proton momentum with a resolution of around 1%. In beam measurements show an RPC efficiency above 95% and a time precision better than 100 ps (including the contribution of a reference scintillator and the momentum spread of the particles) for forward emitted particles. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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