Metrological Performance of a Ferrimagnetic Resonance Marker for the Field Control of the CERN Proton Synchrotron

We report on two ferrimagnetic resonance (FMR) sensors for absolute dynamic magnetic field measurements at 36 and 100 mT. The sensors are designed to mark precisely and reproducibly the moment when a time-transient magnetic field attains a specific value. The trigger from the sensor can then be used for real-time magnetic field measurement systems, called “B-trains,” which are in operation at several large synchrotron installations including five of CERN’s particle accelerators. We discuss in detail the design, the operation, and the performance of the FMR sensors based on two different types of printed circuit board (PCB) resonator structures.

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Ferrimagnetic resonance field sensors for particle accelerators

Beaumont

Buzio

Boero

2019

Review of Scientific Instruments

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Electron paramagnetic resonance magnetic field sensors for particle accelerators

Beaumont

Giloteaux

Matheoud

et al. 2020

Review of Scientific Instruments

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We report on four electron paramagnetic resonance sensors for dynamic magnetic field measurements at 36 mT, 100 mT, 360 mT, and 710 mT. The sensors are based on grounded co-planar microwave resonators operating at about 1 GHz and 3 GHz, realized using printed circuit board technology, and on single-chip integrated microwave oscillators operating at about 10 GHz and 20 GHz, realized using complementary metal-oxide-semiconductor technology. The sensors are designed to mark precisely the moment when a time-dependent magnetic field attains a specific value. The trigger from the sensor can be used to preset the output of real-time magnetic field measurement systems, called “B-trains,” which are in operation at several large synchrotron installations, including five of the CERN’s particle accelerators. We discuss in detail the performance achieved, in particular, the magnetic field resolution that is in the range of 0.1 nT/Hz1/2–6 nT/Hz1/2. The effects of material anisotropy and temperature are also discussed. Finally, we present a detailed characterization of the sensors with field ramps as fast as 5 T/s and field gradients as strong as 12 T/m.

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Performance comparison of Nuclear Magnetic Resonance and FerriMagnetic Resonance field markers for the control of low-energy Synchrotrons

Grech

Beaumont

Buzio

et al. 2018

J. Phys.: Conf. Ser.

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Metrological Performance of a Ferrimagnetic Resonance Marker for the Field Control of the CERN Proton Synchrotron

Abstract: In particle accelerators, "field markers" provide a digital trigger when the magnetic field crosses a given threshold. In this paper, the metrological characterization of a magnetic field marker, based on a ferrimagnetic resonance transducer

Cited by 4 publications

References 11 publications

Ferrimagnetic resonance field sensors for particle accelerators

Ferrimagnetic resonance field sensors for particle accelerators

Electron paramagnetic resonance magnetic field sensors for particle accelerators

Performance comparison of Nuclear Magnetic Resonance and FerriMagnetic Resonance field markers for the control of low-energy Synchrotrons

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