Protection Heater Design Validation for the LARP Magnets Using Thermal Imaging

M. Marchevsky; M. Turqueti; D. W. Cheng; H. Felice; G. Sabbi; T. Salmi; A. Stenvall; G. Chlachidze; G. Ambrosio; P. Ferracin; S. Izquierdo Bermudez; J. C. Perez; E. Todesco

doi:10.1109/TASC.2016.2530161

Protection Heater Design Validation for the LARP Magnets Using Thermal Imaging

M. Marchevsky, M. Turqueti, D. W. Cheng, H. Felice, G. Sabbi, T. Salmi, A. Stenvall, G. Chlachidze, G. Ambrosio, P. Ferracin, S. Izquierdo Bermudez, J. C. Perez, E. Todesco

Research output: Contribution to journal › Article › Scientific › peer-review

1 Citation (Scopus)

Abstract

Protection heaters are essential elements of a quench protection scheme for high-field accelerator magnets. Various heater designs fabricated by LARP and CERN have been already tested in the LARP high-field quadrupole HQ and presently being built into the coils of the high-field quadrupole MQXF. In order to compare the heat flow characteristics and thermal diffusion timescales of different heater designs, we powered heaters of two different geometries in ambient conditions and imaged the resulting thermal distributions using a high-sensitivity thermal video camera. We observed a peculiar spatial periodicity in the temperature distribution maps potentially linked to the structure of the underlying cable. Two-dimensional numerical simulation of heat diffusion and spatial heat distribution have been conducted, and the results of simulation and experiment have been compared. Imaging revealed hot spots due to a current concentration around high curvature points of heater strip of varying cross sections and visualized thermal effects of various interlayer structural defects. Thermal imaging can become a future quality control tool for the MQXF coil heaters.

Original language	English
Article number	4003605
Journal	IEEE Transactions on Applied Superconductivity
Volume	26
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2016.2530161
Publication status	Published - 1 Jun 2016
Publication type	A1 Journal article-refereed

Keywords

Quench Protection
Superconducting Magnets
Thermal Imaging

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics
Electronic, Optical and Magnetic Materials

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10.1109/TASC.2016.2530161

Cite this

Marchevsky, M., Turqueti, M., Cheng, D. W., Felice, H., Sabbi, G., Salmi, T., Stenvall, A., Chlachidze, G., Ambrosio, G., Ferracin, P., Izquierdo Bermudez, S., Perez, J. C., & Todesco, E. (2016). Protection Heater Design Validation for the LARP Magnets Using Thermal Imaging. IEEE Transactions on Applied Superconductivity, 26(4), Article 4003605. https://doi.org/10.1109/TASC.2016.2530161

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title = "Protection Heater Design Validation for the LARP Magnets Using Thermal Imaging",

abstract = "Protection heaters are essential elements of a quench protection scheme for high-field accelerator magnets. Various heater designs fabricated by LARP and CERN have been already tested in the LARP high-field quadrupole HQ and presently being built into the coils of the high-field quadrupole MQXF. In order to compare the heat flow characteristics and thermal diffusion timescales of different heater designs, we powered heaters of two different geometries in ambient conditions and imaged the resulting thermal distributions using a high-sensitivity thermal video camera. We observed a peculiar spatial periodicity in the temperature distribution maps potentially linked to the structure of the underlying cable. Two-dimensional numerical simulation of heat diffusion and spatial heat distribution have been conducted, and the results of simulation and experiment have been compared. Imaging revealed hot spots due to a current concentration around high curvature points of heater strip of varying cross sections and visualized thermal effects of various interlayer structural defects. Thermal imaging can become a future quality control tool for the MQXF coil heaters.",

keywords = "Quench Protection, Superconducting Magnets, Thermal Imaging",

author = "M. Marchevsky and M. Turqueti and Cheng, {D. W.} and H. Felice and G. Sabbi and T. Salmi and A. Stenvall and G. Chlachidze and G. Ambrosio and P. Ferracin and {Izquierdo Bermudez}, S. and Perez, {J. C.} and E. Todesco",

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Marchevsky, M, Turqueti, M, Cheng, DW, Felice, H, Sabbi, G, Salmi, T, Stenvall, A, Chlachidze, G, Ambrosio, G, Ferracin, P, Izquierdo Bermudez, S, Perez, JC & Todesco, E 2016, 'Protection Heater Design Validation for the LARP Magnets Using Thermal Imaging', IEEE Transactions on Applied Superconductivity, vol. 26, no. 4, 4003605. https://doi.org/10.1109/TASC.2016.2530161

TY - JOUR

T1 - Protection Heater Design Validation for the LARP Magnets Using Thermal Imaging

AU - Marchevsky, M.

AU - Turqueti, M.

AU - Cheng, D. W.

AU - Felice, H.

AU - Sabbi, G.

AU - Salmi, T.

AU - Stenvall, A.

AU - Chlachidze, G.

AU - Ambrosio, G.

AU - Ferracin, P.

AU - Izquierdo Bermudez, S.

AU - Perez, J. C.

AU - Todesco, E.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Protection heaters are essential elements of a quench protection scheme for high-field accelerator magnets. Various heater designs fabricated by LARP and CERN have been already tested in the LARP high-field quadrupole HQ and presently being built into the coils of the high-field quadrupole MQXF. In order to compare the heat flow characteristics and thermal diffusion timescales of different heater designs, we powered heaters of two different geometries in ambient conditions and imaged the resulting thermal distributions using a high-sensitivity thermal video camera. We observed a peculiar spatial periodicity in the temperature distribution maps potentially linked to the structure of the underlying cable. Two-dimensional numerical simulation of heat diffusion and spatial heat distribution have been conducted, and the results of simulation and experiment have been compared. Imaging revealed hot spots due to a current concentration around high curvature points of heater strip of varying cross sections and visualized thermal effects of various interlayer structural defects. Thermal imaging can become a future quality control tool for the MQXF coil heaters.

AB - Protection heaters are essential elements of a quench protection scheme for high-field accelerator magnets. Various heater designs fabricated by LARP and CERN have been already tested in the LARP high-field quadrupole HQ and presently being built into the coils of the high-field quadrupole MQXF. In order to compare the heat flow characteristics and thermal diffusion timescales of different heater designs, we powered heaters of two different geometries in ambient conditions and imaged the resulting thermal distributions using a high-sensitivity thermal video camera. We observed a peculiar spatial periodicity in the temperature distribution maps potentially linked to the structure of the underlying cable. Two-dimensional numerical simulation of heat diffusion and spatial heat distribution have been conducted, and the results of simulation and experiment have been compared. Imaging revealed hot spots due to a current concentration around high curvature points of heater strip of varying cross sections and visualized thermal effects of various interlayer structural defects. Thermal imaging can become a future quality control tool for the MQXF coil heaters.

KW - Quench Protection

KW - Superconducting Magnets

KW - Thermal Imaging

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DO - 10.1109/TASC.2016.2530161

M3 - Article

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SN - 1051-8223

VL - 26

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 4

M1 - 4003605

ER -

Protection Heater Design Validation for the LARP Magnets Using Thermal Imaging

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