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HK: Fachverband Physik der Hadronen und Kerne
HK 28: Instrumentation VII
HK 28.5: Vortrag
Dienstag, 12. März 2024, 18:45–19:00, HBR 19: C 2
Ionoacoustic detection of swift heavy ions — •Leon Kirsch1,2,3, Walter Assmann1, Sonja Gerlach1, Anna-Katharina Schmidt1, Markus Bender2,4, Katia Parodi1, Jörg Schreiber1, and Christina Trautmann2,3 — 1Ludwig-Maximilians-Universität München — 2GSI Helmholtzzentrum — 3Technische Universität Darmstadt — 4Hochschule RheinMain, Rüsselsheim
The characteristics of the ionoacoustic detectors were investigated at the SIS18 synchrotron at GSI using Xe, Pb and U ions of energies up to 1 GeV/u [1]. Microsecond-pulsed ion beams stopped in water generate an ultrasonic pressure pulse, which can be detected by a piezoelectric transducer. The analysis of the signal in time and frequency domain allows us to locate the initial position of the ion bunch in 3D space as well as to determine the range and thus the ion energy to an accuracy of 1 %. Over a wide intensity range, the signal amplitude has a linear correlation with the beam intensity. Inserting a target into the ion beam yields precise information on the energy-loss. Combined with their exceptional radiation hardness, ionoacoustic detectors hold tremendous potential as ion beam monitors for upcoming high-energy and high-intensity heavy ion facilities. In fact, they could even serve as a promising 'second generation' Faraday cup.
This work has been supported by GSI as part of the R&D project GSI-LMASS1821 with the Ludwig-Maximilians-Universität München.
[1] L. Kirsch, et al., Nucl. Instrum. Methods Phys. Res., Sect. A 1057 (2023), 168755
Keywords: Ionoacoustics; Swift heavy ions; Particle detector; Ultrasonic transducer; Energy determination