Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 36: Instrumentation VII
HK 36.6: Talk
Thursday, March 19, 2026, 15:15–15:30, PHIL B 302
The Super-FRS beam intensity monitor — •Chiara Nociforo1, Matteo Alfonsi1, Tobias Blatz1, Joshua Alvaro Galvis Tarquino1, Rainer Haseitl1, Rainer Hettrich1, Christos Karagiannis1, Mladen Kiš1, Martin Kumm2, Rolf Lonsing2, Rahul Singh1, and Michael Träger1 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — 2Fulda University of Applied Sciences, Fulda, Germany
The beam diagnostics at the entrance of the Super-FRS, under installation at FAIR for the production of in-flight radioactive ion beams, is used to tune the separator and provide the necessary measures for machine protection and online monitoring. In addition, the high intensity of the primary SIS ion beams delivered up to the target must be stored to normalise the measured rates and extract the production cross sections of the new secondary ion beams. The main design challenge is to cope with the high intensities and the expected background radiation, since the detecting system should survive for extended periods of operation without hands-on maintenance. Two complementary CVD diamond detectors with excellent radiation resistance were built as reference counting detectors up to few MHz particle rate, overlapping with the standard intensity monitors at FAIR. Customised electronics with large dynamic range developed for the readout of the diamond analogue signals was coupled to the detector and tested at the pre-assembled target vacuum chamber. The design of the Super-FRS intensity monitor and its peculiarity will be presented and the latest achievements of the performed tests will be reported.
Keywords: CVD diamond; radiation hardness; Super-FRS; particle detector