A facility for cryogenic ion irradiation and in situ characterization of rare-earth barium copper oxide superconducting tapes
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063907_1_5.0200936.pdf
Description
Published version
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7.24 MB
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Checksum (MD5)
87471b7bdf6c86ca04ca45fc6c4a95e2
Author(s)
Devitre, AR
Fischer, DX
Woller, KB
Clark, BC
Short, MP
Whyte, DG
Hartwig, ZS
Date Issued
June 26, 2024
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Citation
A. R. Devitre, D. X. Fischer, K. B. Woller, B. C. Clark, M. P. Short, D. G. Whyte, Z. S. Hartwig; A facility for cryogenic ion irradiation and in situ characterization of rare-earth barium copper oxide superconducting tapes. Rev. Sci. Instrum. 1 June 2024; 95 (6): 063907.
Version
Final published version
Abstract
Superconducting magnets based on Rare Earth Barium Copper Oxides (REBCO) offer transformative capabilities in the fields of fusion energy, high energy physics, and space exploration. A challenge shared by these applications is the limited lifetime of REBCO due to radiation damage sustained during operation. Here we present a new ion-beam facility that enables simultaneous cryogenic irradiation and in situ characterization of commercial REBCO tapes. The ion source provides spatially uniform fluxes up to 1018 protons/m2s with kinetic energies up to 3.4 MeV, in addition to helium and higher-Z species. Using this facility, we can induce uniform damage profiles in the first 10–20 µm of REBCO tapes with less than 0.25 appm of hydrogen implanted in REBCO after a dose of 1020 protons/m2. The tape can be held between 20 and 300 K with an accuracy of ±0.1 K and is connected to a four-point probe measuring the critical current, Ic, and critical temperature, Tc, before, during, and after irradiation with transport current ranging from 100 nA to 100 A, and a typical voltage noise less than 0.1 μV. These capabilities are presently used to study the effect of irradiation temperature on REBCO performance change during and after proton bombardment, to assess the possibility of Ic and Tc recovery after irradiation through thermal annealing, and to explore the instantaneous and recoverable suppression of Ic and Tc observed during irradiation.
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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DOI of Published Version
https://doi.org/10.1063/5.0200936
