Azab, Eman ; Hegazy, Yasser G. ; Reeg, Hansjoerg ; Schwickert, Marcus ; Hofmann, Klaus (2022):
Tunneling Magnetoresistance DC Current Transformer for Ion Beam Diagnostics. (Publisher's Version)
In: Sensors, 21 (9), MDPI, e-ISSN 1424-8220,
DOI: 10.26083/tuprints-00019596,
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Item Type: | Article |
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Origin: | Secondary publication DeepGreen |
Status: | Publisher's Version |
Title: | Tunneling Magnetoresistance DC Current Transformer for Ion Beam Diagnostics |
Language: | English |
Abstract: | In this paper, open loop and closed loop Tunneling Magnetoresistance (TMR) DC Current Transformers (DCCTs) for ion beam diagnostics are presented. The DCCTs employ MR sensors to measure the DC component of the accelerator’s ion beam. A comparative study between Giant Magnetoresistance (GMR) and TMR sensors is presented to illustrate the sensor selection criterion for the DCCT application. The two proposed DCCTs are studied in open and closed loop configurations. A closed loop feedback electronic system is designed to generate a feedback current equivalent to the ion beam current such that the sensor operates at zero flux. Furthermore, theoretical and experimental results for the TMR-based DCCT including noise analysis are presented for both open loop and closed loop configurations. Both configurations’ minimum detectable currents are in the range of microampere. The proposed closed loop hardware prototype has a settling time of less than 15 µs. The measured minimum detectable currents for the open and closed loop TMR-based DCCTs are 128.2 µA/√ Hz and 10.14 µA/√ Hz at 1 Hz, respectively. |
Journal or Publication Title: | Sensors |
Volume of the journal: | 21 |
Issue Number: | 9 |
Place of Publication: | Darmstadt |
Publisher: | MDPI |
Collation: | 15 Seiten |
Uncontrolled Keywords: | DC current transformer, giant MR sensor, ion beam diagnostics, particle accelerators, tunneling MR sensor |
Classification DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
Divisions: | 18 Department of Electrical Engineering and Information Technology > Institute of Computer Engineering > Integrated Electronic Systems (IES) |
Date Deposited: | 02 Feb 2022 13:17 |
Last Modified: | 09 Mar 2023 07:21 |
DOI: | 10.26083/tuprints-00019596 |
Corresponding Links: | |
URN: | urn:nbn:de:tuda-tuprints-195967 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/19596 |
PPN: | 505619547 |
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