Mainz 2022 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 16: Instrumentation VI
HK 16.2: Vortrag
Montag, 28. März 2022, 16:15–16:30, HK-H5
New GEM detectors for AMBER — •Jan Paschek1, Karl Flöthner3, Markus Ball1, Michael Hösgen1, Michael Lupberger1,2, and Bernhard Ketzer1 — 1Helmholtz-Institut für Strahlen- und Kernphysik der Universität Bonn, Bonn, Germany — 2Physikalisches Institut der Universität Bonn, Bonn, Germany — 3CERN GDD, Meyrin, Schweiz
Phase II of the COmmon Muon Proton Apparatus for Structure and Spectroscopy (COMPASS) is planned to be finished in 2022 by measuring the transverse-momentum dependent PDFs in deep inelastic scattering of muons on a deuterium target.
Using the COMPASS spectrometer a new proposal for a future QCD facility at the M2 beamline of the SPS accelaror, at CERN has been accepted. Running under the name AMBER, the physics program includes a measurement of the proton radius in elastic muon-proton scattering. The GEM stations are mandatory for scattered muon tracking. With a low material budget, high efficiency (>97%) and a good spatial resolution (around 70µm) the triple GEM detectors are an ideal tracking system. Combined with further detectors and a magnetic field, the momentum of scattered muons can be determined.
However, the existing GEM detectors have to be replaced as they cannot cope with the anticipated beam rates and have suffered from 20 years of operation COMPASS. A new detector layout was developed.
In this contribution, first test results as well as the quality assurance procedure for detector construction will be presented.