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Title: A portable high-field pulsed magnet system for x-ray scattering studies.

Abstract

We present a portable pulsed-magnet system for x-ray studies of materials in high magnetic fields (up to 30 T). The apparatus consists of a split-pair of minicoils cooled on a closed-cycle cryostat, which is used for x-ray diffraction studies with applied field normal to the scattering plane. A second independent closed-cycle cryostat is used for cooling the sample to near liquid helium temperatures. Pulsed magnetic fields (- 1 ms in total duration) are generated by discharging a configurable capacitor bank into the magnet coils. Time-resolved scattering data are collected using a combination of a fast single-photon counting detector, a multichannel scaler, and a high-resolution digital storage oscilloscope. The capabilities of this instrument are used to study a geometrically frustrated system revealing strong magnetostrictive effects in the spin-liquid state.

Authors:
; ; ; ; ; ; ;  [1];  [2];  [2];  [2];  [2]
  1. (X-Ray Science Division)
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1027198
Report Number(s):
ANL/XSD/JA-65127
Journal ID: ISSN 0034-6748; RSINAK; TRN: US201121%%353
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 80; Journal Issue: 11
Country of Publication:
United States
Language:
ENGLISH
Subject:
47 OTHER INSTRUMENTATION; CAPACITORS; CRYOSTATS; HELIUM; MAGNET COILS; MAGNETIC FIELDS; MAGNETS; SCATTERING; STORAGE; X-RAY DIFFRACTION

Citation Formats

Islam, Z., Ruff, J.P.C., Nojiri, H., Matsuda, Y. H., Ross, K. A., Gaulin, B. D., Qu, Z., Lang, J. C., PSC-USR), McMaster Univ.), Tohoku Univ.), and Tulane Univ.). A portable high-field pulsed magnet system for x-ray scattering studies.. United States: N. p., 2009. Web. doi:10.1063/1.3251273.
Islam, Z., Ruff, J.P.C., Nojiri, H., Matsuda, Y. H., Ross, K. A., Gaulin, B. D., Qu, Z., Lang, J. C., PSC-USR), McMaster Univ.), Tohoku Univ.), & Tulane Univ.). A portable high-field pulsed magnet system for x-ray scattering studies.. United States. doi:10.1063/1.3251273.
Islam, Z., Ruff, J.P.C., Nojiri, H., Matsuda, Y. H., Ross, K. A., Gaulin, B. D., Qu, Z., Lang, J. C., PSC-USR), McMaster Univ.), Tohoku Univ.), and Tulane Univ.). Thu . "A portable high-field pulsed magnet system for x-ray scattering studies.". United States. doi:10.1063/1.3251273.
@article{osti_1027198,
title = {A portable high-field pulsed magnet system for x-ray scattering studies.},
author = {Islam, Z. and Ruff, J.P.C. and Nojiri, H. and Matsuda, Y. H. and Ross, K. A. and Gaulin, B. D. and Qu, Z. and Lang, J. C. and PSC-USR) and McMaster Univ.) and Tohoku Univ.) and Tulane Univ.)},
abstractNote = {We present a portable pulsed-magnet system for x-ray studies of materials in high magnetic fields (up to 30 T). The apparatus consists of a split-pair of minicoils cooled on a closed-cycle cryostat, which is used for x-ray diffraction studies with applied field normal to the scattering plane. A second independent closed-cycle cryostat is used for cooling the sample to near liquid helium temperatures. Pulsed magnetic fields (- 1 ms in total duration) are generated by discharging a configurable capacitor bank into the magnet coils. Time-resolved scattering data are collected using a combination of a fast single-photon counting detector, a multichannel scaler, and a high-resolution digital storage oscilloscope. The capabilities of this instrument are used to study a geometrically frustrated system revealing strong magnetostrictive effects in the spin-liquid state.},
doi = {10.1063/1.3251273},
journal = {Review of Scientific Instruments},
number = 11,
volume = 80,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}
  • We present a portable pulsed-magnet system for x-ray studies of materials in high magnetic fields (up to 30 T). The apparatus consists of a split-pair of minicoils cooled on a closed-cycle cryostat, which is used for x-ray diffraction studies with applied field normal to the scattering plane. A second independent closed-cycle cryostat is used for cooling the sample to near liquid helium temperatures. Pulsed magnetic fields ({approx}1 ms in total duration) are generated by discharging a configurable capacitor bank into the magnet coils. Time-resolved scattering data are collected using a combination of a fast single-photon counting detector, a multichannel scaler,more » and a high-resolution digital storage oscilloscope. The capabilities of this instrument are used to study a geometrically frustrated system revealing strong magnetostrictive effects in the spin-liquid state.« less
  • We have developed a versatile experimental apparatus for synchrotron x-ray measurements in pulsed high magnetic fields. The apparatus consists of a double cryostat incorporating a liquid nitrogen bath to cool the miniature pulsed coil and an independent helium flow cryostat allowing sample temperatures from 4 up to 250 K. The high duty cycle miniature pulsed coils can generate up to 38 T. During experiments at 30 T a repetition rate of 6 pulses/min was routinely reached. Using a 4 kJ power supply, the pulse duration was between 500 {mu}s and 1 ms. The setup was used for nuclear forward scatteringmore » measurements on {sup 57}Fe up to 25 T on the ESRF beamline ID18. In another experiment, x-ray magnetic circular dichroism was measured up to 30 T on the ESRF energy dispersive beamline ID24.« less
  • We describe a new ultrahigh-vacuum facility which is being used for studies of solid surfaces. The target chamber is attached via a differentially pumped beamline to a 2-MV Van de Graaff accelerator, and includes: (1) instrumentation for high-energy ion backscattering and channeling studies and nuclear reaction analysis, (2) a 100-mm radius hemispherical analyzer for photoemission studies, and (3) low-energy electron diffraction (LEED) optics.
  • A compact microwave ion source has been designed and developed for operation at a frequency of 2.45 GHz. The axial magnetic field is based on two permanent magnet rings, operating in the “off-resonance” mode and is tunable by moving the permanent magnets. In order to understand the electron energy distribution function, x-ray bremsstrahlung has been measured in the axial direction. Simulation studies on the x-ray bremsstrahlung have been carried out to compare with the experimental results. The effect of the axial magnetic field with respect to the microwave launching position and the position of the extraction electrode on the x-raymore » bremsstrahlung have been studied.« less