Article on non-interceptive monitor published in Instruments

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Induced E field and H field configuration focused separately in capacitive and inductive regions within the resonator. F

Sudharsan Srinivasan and Pierre-André Duperrex, from Paul Scherrer Institut (PSI) have authored an Article titled “Dielectric-Filled Reentrant Cavity Resonator as a Low-Intensity Proton Beam Diagnostic” in the Instruments an Open Access Journal published by MDPI.

Measurement of the proton beam current (0.1–40 nA) at the medical treatment facility PROSCAN at the Paul Scherrer Institut (PSI) is performed with ionization chambers. To mitigate the scattering issues and to preserve the quality of the beam delivered to the patients, a non-interceptive monitor based on the principle of a reentrant cavity resonator has been built.

The article shows good agreement between simulation and test-bench characterization. Number crunching from the test-bench measurement sympathizes the low-level signals that are expected and consequently a longer signal integration time to be able to read such low-level signals.