Parragh, D. M., Scheuerlein, C., Piccin, R., Ravotti, F., Pezzullo, G., Ternova, D., Taborelli, M., Lehner, M., & Eisterer, M. (2024). Irradiation induced aging of epoxy resins for impregnation of superconducting magnet coils. IEEE Transactions on Applied Superconductivity, 34(3), Article 7800107. https://doi.org/10.1109/TASC.2023.3332705
E141-06 - Forschungsbereich Low Temperature Physics and Superconductivity
-
Journal:
IEEE Transactions on Applied Superconductivity
-
ISSN:
1051-8223
-
Date (published):
May-2024
-
Number of Pages:
7
-
Publisher:
IEEE
-
Peer reviewed:
Yes
-
Keywords:
Accelerator magnets; DMA; epoxy resin; FCC; HL-LHC; irradiation; outgassing; short beam test
en
Abstract:
Understanding the effect of radiation on the functional properties of epoxy resins is crucial for their application in future particle accelerators like the Future Circular Collider (FCC). We compare the irradiation induced aging rates of six epoxy resin systems that can be used for the vacuum impregnation of magnet coils. Aging is assessed based on Dynamical Mechanical Analysis (DMA), 3-point bending and outgassing tests. DMA storage and loss moduli evolutions reveal the effect of the competing influence of cross-linking and chain scission on the glass transition temperature (Tg). The same proton and gamma irradiation dose has a similar effect on the thermomechanical epoxy resin properties. Aging rates differ strongly for the different resins, and the fastest aging is observed for the MY750 resin system, which Tg decreases with a rate of about minus 9 °C/MGy.
en
Project title:
Neutron irradiation study of different polymers for use in superconducting accelerator magnets: KE5609/TE (CERN Finance and Procurement)
CC BY 4.0
