Resistive plate chambers for precise measurement of high-momentum protons in short range correlations at R3B
Journal article, 2023
The Reactions with Relativistic Radioactive Beams (R3B) 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 m2, multi-gap Resistive Plate Chamber (RPC). The chamber is equipped with twelve 0.3mm gaps and readout by 30mm 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.
Short range correlations
Time of flight
Gaseous detectors
Timing
Resistive plate chamber
Author
M. Xarepe
Laboratory of Instrumentation and Experimental Particle Physics
University of Lisbon
T. Aumann
Technische Universität Darmstadt
Helmholtz Association of German Research Centres
A. Blanco
Laboratory of Instrumentation and Experimental Particle Physics
A. Corsi
University Paris-Saclay
D. Galaviz
University of Lisbon
Laboratory of Instrumentation and Experimental Particle Physics
Håkan T Johansson
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
S. Linev
Helmholtz Association of German Research Centres
B. Loher
Helmholtz Association of German Research Centres
L. Lopes
Laboratory of Instrumentation and Experimental Particle Physics
J. Michel
Goethe University Frankfurt
V. Panin
Helmholtz Association of German Research Centres
D. Rossi
Technische Universität Darmstadt
Helmholtz Association of German Research Centres
J. Saraiva
Laboratory of Instrumentation and Experimental Particle Physics
Hans Törnqvist
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
M. Traxler
Helmholtz Association of German Research Centres
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
0168-9002 (ISSN)
Vol. 1055 168445Subject Categories (SSIF 2011)
Accelerator Physics and Instrumentation
Subatomic Physics
DOI
10.1016/j.nima.2023.168445