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Title: A cable-scale experiment to explore new materials for optimizing superconductor accelerator magnets

Abstract

We discuss a previously commissioned system for exploring critical current pressure sensitivity in superconducting cables, the Transverse Pressure Insert, was modified to examine signals resulting from strand motion and insulation/impregnation cracking in a fully-excited Nb3Sn single strand embedded in an insulation wrapped and impregnated Cu dummy Rutherford cable stack. Measurements were performed in LHe with cyclic transverse pressures up to 68.5 MPa and transverse applied fields up to 13 T. Pressure was applied and removed to simulate stresses seen during magnet operation. Voltage and acoustic signal traces from a CTD-101 K impregnated cable stack were compared to those of a sample impregnated with NHMFL Mix–61. The experiments in this document were in the pursuit of developing a smaller scale, lower cost, and shorter turn around time experiment for exploring materials and processes to decrease training in next-generation Nb3Sn accelerator magnets.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [3]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1599624
Report Number(s):
FERMILAB-PUB-20-058-TD
Journal ID: ISSN 0011-2275; oai:inspirehep.net:1777564
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Cryogenics
Additional Journal Information:
Journal Volume: 106; Journal Issue: C; Journal ID: ISSN 0011-2275
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Kovacs, C. J., Barzi, E. Z., Turrioni, D., Zlobin, A. V., and Marchevsky, M.. A cable-scale experiment to explore new materials for optimizing superconductor accelerator magnets. United States: N. p., 2019. Web. https://doi.org/10.1016/j.cryogenics.2019.103025.
Kovacs, C. J., Barzi, E. Z., Turrioni, D., Zlobin, A. V., & Marchevsky, M.. A cable-scale experiment to explore new materials for optimizing superconductor accelerator magnets. United States. https://doi.org/10.1016/j.cryogenics.2019.103025
Kovacs, C. J., Barzi, E. Z., Turrioni, D., Zlobin, A. V., and Marchevsky, M.. Tue . "A cable-scale experiment to explore new materials for optimizing superconductor accelerator magnets". United States. https://doi.org/10.1016/j.cryogenics.2019.103025. https://www.osti.gov/servlets/purl/1599624.
@article{osti_1599624,
title = {A cable-scale experiment to explore new materials for optimizing superconductor accelerator magnets},
author = {Kovacs, C. J. and Barzi, E. Z. and Turrioni, D. and Zlobin, A. V. and Marchevsky, M.},
abstractNote = {We discuss a previously commissioned system for exploring critical current pressure sensitivity in superconducting cables, the Transverse Pressure Insert, was modified to examine signals resulting from strand motion and insulation/impregnation cracking in a fully-excited Nb3Sn single strand embedded in an insulation wrapped and impregnated Cu dummy Rutherford cable stack. Measurements were performed in LHe with cyclic transverse pressures up to 68.5 MPa and transverse applied fields up to 13 T. Pressure was applied and removed to simulate stresses seen during magnet operation. Voltage and acoustic signal traces from a CTD-101 K impregnated cable stack were compared to those of a sample impregnated with NHMFL Mix–61. The experiments in this document were in the pursuit of developing a smaller scale, lower cost, and shorter turn around time experiment for exploring materials and processes to decrease training in next-generation Nb3Sn accelerator magnets.},
doi = {10.1016/j.cryogenics.2019.103025},
journal = {Cryogenics},
number = C,
volume = 106,
place = {United States},
year = {2019},
month = {12}
}

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