Title
A technique for the correction of long-term magnetic flux integrator drift
Abstract
In the framework of magnetic measurements in particle accelerators, the problem of the drift due to integration of a voltage offset causes a lack of stability, which is inadequate for long-term measurements. In this paper, a new approach for the modelling and correction of long-term drift in integrators is discussed. In particular, a feed-forward drift correction method has been developed analytically and tested using experimental data taken from an existing real-time magnetic measurement system. Among all the sensors, NMR was chosen for the integration constant due to its accuracy (10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-6</sup> ) and the Metrolab PT2026 NMR teslameter has been tested successfully as a novel kind of quasi-DC field marker. The combination of feed-forward correction and PT2026 as a marker will allow the future real-time magnetic measurement systems to meet the very strict specification of 1 μT field stability over durations of the order of minutes. In certain cases, such as in ELENA, this method offers a way to reduce by three orders of magnitude the drift-induced field error with respect to the existing system.
Year
DOI
Venue
2019
10.1109/METROI4.2019.8792916
2019 II Workshop on Metrology for Industry 4.0 and IoT (MetroInd4.0&IoT)
Keywords
DocType
ISBN
Integrator drift correction,Nuclear Magnetic Resonance (NMR) teslameter,particle accelerator magnets
Conference
978-1-7281-0430-0
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Maria Amodeo100.34
Pasquale Arpaia29529.77
Marco Buzio301.69