The current and field regulation system of the MedAustron Ion-Beam accelerator

Fraboulet, Philippe; Ambrosch, Kristian; Cesaris, Ivan De; Beuret, A.

doi:10.1109/iecon.2013.6700312

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is important not only as a working tool for machine operators and end users of the measurement system but also for instrumentation developers to identify critical components in the acquisition chain. To apply the law of forward uncertainty propagation, we first compute the partial derivatives of the average field with respect to each one of the six arguments p i appearing in (10), including five parameters plus the measured flux…”

Section: Uncertainty Analysismentioning

confidence: 99%

“…The work is underway to renovate these systems, some components of which date from the 1950s. Similar systems are also implemented at the Brookhaven National Laboratory [7] and at several hadrontherapy facilities, including the National Centre of Oncological Hadrontherapy (CNAO) [8], MedAustron [9], [10], and the Heidelberg Ion-Beam Therapy Center [11], [12]. Comparable techniques, albeit with higher precision and lower bandwidth, are also used for spectrometer magnets [13] and in the wider MRI magnet community [14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Magnetic Measurement Model for Real-Time Control of Synchrotrons

Grech

Buzio

Sammut

2020

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

In this paper, we present a measurement model for estimating the magnetic field of a synchrotron-type particle accelerator, based on sensors installed in a reference magnet. The model combines the calibration of the individual sensors with the experimental characterization of the magnets to infer, in absolute terms, the value of the average field in the ring, as needed for the real-time feedback control of the accelerator. Implementation of this model at the extra low energy antiproton (ELENA) ring at the European Organization for Nuclear Research (CERN) is used as a case study. We describe first the measurement setup and method, followed by the detailed definition of the model, along with its parameters and an evaluation of their value and uncertainty. Next, we assess the combined uncertainty of the whole measurement chain. Finally, we discuss the results obtained so far during the machine commissioning phase and outline our plans for future improvement.

show abstract

Section: Uncertainty Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Magnetic Measurement Model for Real-Time Control of Synchrotrons

Grech

Buzio

Sammut

2020

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

show abstract

“…While the pass-band of the bending magnets does not usually exceed a few hundred hertz, the RF system requires a much faster data rate to ensure smooth feedback, e.g., 250 kHz in the PS. The use of B-train systems is not unique to CERN: for instance, similar designs are implemented at ion therapy centres such as the National Centre of Oncological Hadrontherapy (CNAO) [3], MedAustron [4] and the Heidelberg Ion-Beam Therapy Centre (HIT) [5]. For such applications, real-time feedback control of the magnetic field is instrumental, for example, to reduce dead times that would be otherwise spent pre-cycling the magnets to improve their reproducibility.…”

Section: Introductionmentioning

confidence: 99%

Development of a Real-Time Magnetic Field Measurement System for Synchrotron Control

et al. 2021

View full text Add to dashboard Cite

The precise knowledge of the magnetic field produced by dipole magnets is critical to the operation of a synchrotron. Real-time measurement systems may be required, especially in the case of iron-dominated electromagnets with strong non-linear effects, to acquire the magnetic field and feed it back to various users. This work concerns the design and implementation of a new measurement system of this kind currently being deployed throughout the European Organization for Nuclear Research (CERN) accelerator complex. We first discuss the measurement principle, the general system architecture and the technology employed, focusing in particular on the most critical and specialized components developed, that is, the field marker trigger generator and the magnetic flux integrator. We then present the results of a detailed metrological characterization of the integrator, including the aspects of drift estimation and correction, as well as the absolute gain calibration and frequency response. We finally discuss the latency of the whole acquisition chain and present an outline of future work to improve the capabilities of the system.

show abstract