engleski

A short-orbit spectrometer for low-energy pion detection in electroproduction experiments at MAMI

A new Short-Orbit Spectrometer (SOS) has been constructed and installed within the experimental facility of the A1 collaboration at Mainz Microtron (MAMI), with the goal to detect low-energy pions. It is equipped with a Browne–Buechner magnet and a detector system consisting of two helium–ethane based drift chambers and a scintillator telescope made of five layers. The detector system allows detection of pions in the momentum range of 50–147 MeV/c, which corresponds to 8.7–63 MeV kinetic energy. The spectrometer can be placed at a distance range of 54–66 cm from the target center. Two collimators are available for the measurements, one having 1.8 msr aperture and the other having 7 msr aperture. The Short-Orbit Spectrometer has been successfully calibrated and used in coincidence measurements together with the standard magnetic spectrometers of the A1 collaboration.

low-energy pion detection

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