Microminiature Hall Probes for Applications at Pulsed Magnetic Fields up to 87 Tesla

Mironov, O. A.; Жерлицын, С.; Uhlarz, M.; Skourski, Y.; Palewski, Т.; Wosnitza, J.

doi:10.1007/s10909-009-0140-4

Cited by 13 publications

(13 citation statements)

References 7 publications

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“…A measurement of a complete 3D field map with high resolution, including all fringe fields, standard for permanent magnets or DC devices, is not practical for pulsed high-field solenoids at relatively low repetition rate. The experimental data was acquired via a Hall-probe suitable for measurements in pulsed high magnetic fields 55 . Figure 2(a) shows the comparison of the B-field measurement (50 pulses) to the simulated B-field on axis resulting in a translation factor of α 0 = 1.06, adjusted to minimise the difference of the peak field strengths.…”

Section: Beamline Modelling and Experimental Verificationmentioning

confidence: 99%

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Brack

Kroll

Gaus

et al. 2020

Sci Rep

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Intense laser-driven proton pulses, inherently broadband and highly divergent, pose a challenge to established beamline concepts on the path to application-adapted irradiation field formation, particularly for 3D. Here we experimentally show the successful implementation of a highly efficient (50% transmission) and tuneable dual pulsed solenoid setup to generate a homogeneous (laterally and in depth) volumetric dose distribution (cylindrical volume of 5 mm diameter and depth) at a single pulse dose of 0.7 Gy via multi-energy slice selection from the broad input spectrum. The experiments were conducted at the Petawatt beam of the Dresden Laser Acceleration Source Draco and were aided by a predictive simulation model verified by proton transport studies. With the characterised beamline we investigated manipulation and matching of lateral and depth dose profiles to various desired applications and targets. Using an adapted dose profile, we performed a first proof-of-technical-concept laser-driven proton irradiation of volumetric in-vitro tumour tissue (SAS spheroids) to demonstrate concurrent operation of laser accelerator, beam shaping, dosimetry and irradiation procedure of volumetric biological samples.

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Section: Beamline Modelling and Experimental Verificationmentioning

confidence: 99%

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Brack

Kroll

Gaus

et al. 2020

Sci Rep

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show abstract

“…After a number of pulses at the level of 85-91 T no significant change in the magnet inductance has been detected. The initial magnetic-field calibration obtained with a Hall sensor and a pick-up coil (see [3] and [21] for details) has been confirmed by Shubnikov-de Haas measurements of a high-temperature superconductor. As an additional improvement of the magnet design we are going to decrease the eddy-current losses by optimizing the geometry of the metallic parts and to apply more axial pre-stress in the region of the magnet bore.…”

Section: T Pulsed Magnetmentioning

confidence: 63%

Status of the Pulsed-Magnet-Development Program at the Dresden High Magnetic Field Laboratory

Жерлицын¹,

Wustmann²,

Herrmannsdörfer³

et al. 2012

IEEE Trans. Appl. Supercond.

Self Cite

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The Dresden High Magnetic Field Laboratory (HLD) is a pulsed-field user facility which offers to researches a variety of experimental techniques combined with non-destructive pulsed magnetic fields. Recently a new, 9.5 MJ dual-coil magnet has been commissioned. This magnet has achieved magnetic field of 91.4 T in a 16 mm bore and it is available for users now. In this paper, we report on some key upgrades in the magnet design which have led to breaking the 90 T limit at the HLD. Further possible design improvements are discussed. In addition, we share our operational experience obtained with the pulsed magnets.Index Terms-Magnet design and construction, non-destructive pulsed magnet.

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“…A measurement of a complete 3D field map with high resolution, including all fringe fields, standard for permanent magnets or DC devices, is not practical for pulsed high-field solenoids at relatively low repetition rate. The experimental data was acquired via a Hall-probe suitable for measurements in pulsed high magnetic fields 54 . Figure 2a) shows the comparison of the B-field measurement (50 pulses) to the simulated B-field on axis resulting in a translation factor of α 0 = 1.06, adjusted to minimise the difference of the peak field strengths.…”

Section: Beamline Modelling and Experimental Verificationmentioning

confidence: 99%

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Brack¹,

Kroll²,

Gaus³

et al. 2019

Preprint

View full text Add to dashboard Cite

Intense laser-driven proton pulses, inherently broadband and highly divergent, pose a challenge to established beamline concepts on the path to application-adapted irradiation field formation, particularly for 3D. Here we experimentally show the successful implementation of a highly efficient (50 % transmission) and tuneable dual pulsed solenoid setup to generate a homogeneous (8.5 % uniformity laterally and in depth) volumetric dose distribution (cylindrical volume of 5mm diameter and depth) at a single pulse dose of 0.7 Gy via multi-energy slice selection from the broad input spectrum. The experiments have been conducted at the Petawatt beam of the Dresden Laser Acceleration Source Draco and were aided by a predictive simulation model verified by proton transport studies. With the characterised beamline we investigated manipulation and matching of lateral and depth dose profiles to various desired applications and targets. Using a specifically adapted dose profile, we successfully performed first proof-of-concept laser-driven proton irradiation studies of volumetric in-vivo normal tissue (zebrafish embryos) and in-vitro tumour tissue (SAS spheroids) samples.

show abstract

Microminiature Hall Probes for Applications at Pulsed Magnetic Fields up to 87 Tesla

Cited by 13 publications

References 7 publications

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

Status of the Pulsed-Magnet-Development Program at the Dresden High Magnetic Field Laboratory

Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline

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