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Title: Ross Priory workshop presentation. [Calculated cool down time for 60 Tesla magnet]

Abstract

We calculated the cool down time for the outer coil of the 60 Tesla 100 ms research magnet under design at the US High Magnetic Field Laboratory. A drawing of the magnet system is shown in Fig. 1. This is a preliminary design and will undoubtedly differ from the final design. We chose convenient conductor cross sections for the solenoid and assumed a packing factor of 0.75. The 25% conductor void was assumed to be filled with insulation having the thermal properties of an epoxy glass resin mixture. Our approach was to use a 2D axisymmetric finite element calculation to accurately model a radial slice from the midplane of the solenoid. This model consisting of alternating layers of insulation and conductor is shown in Fig. 2. We compared the results from this model to those of a one material model with smeared thermal properties. The smeared properties were adjusted so that comparable thermal diffusion times were obtained by both methods. Using the smeared properties we were able to model a 2D cross section of the solenoid with all the boundaries specified while avoiding the necessity of the complex meshing of conductors and insulators. Long simulation run times were thus avoided,more » and we were able to quickly modify the geometry to test cooling methods.« less

Authors:
Publication Date:
Research Org.:
Los Alamos National Lab., NM (United States)
Sponsoring Org.:
USDOD; Department of Defense, Washington, DC (United States)
OSTI Identifier:
7038787
Report Number(s):
LA-UR-92-1916; CONF-9203178-1
ON: DE92017515
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: The euromagtech workshop, Ross Priory (United Kingdom), 26-28 Mar 1992
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; MAGNETS; COOLING; THERMAL DIFFUSION; TWO-DIMENSIONAL CALCULATIONS; COMPUTER-AIDED DESIGN; COPPER; CROSS SECTIONS; ELECTRIC CONDUCTORS; ELECTRICAL INSULATORS; FIBERGLASS; FINITE ELEMENT METHOD; HEAT TRANSFER; LAYERS; SOLENOIDS; COMPOSITE MATERIALS; DESIGN; DIFFUSION; ELECTRIC COILS; ELECTRICAL EQUIPMENT; ELEMENTS; ENERGY TRANSFER; EQUIPMENT; MATERIALS; METALS; NUMERICAL SOLUTION; TRANSITION ELEMENTS; 420200* - Engineering- Facilities, Equipment, & Techniques; 661300 - Other Aspects of Physical Science- (1992-); 360104 - Metals & Alloys- Physical Properties; 360606 - Other Materials- Physical Properties- (1992-)

Citation Formats

Rickel, D G. Ross Priory workshop presentation. [Calculated cool down time for 60 Tesla magnet]. United States: N. p., 1992. Web.
Rickel, D G. Ross Priory workshop presentation. [Calculated cool down time for 60 Tesla magnet]. United States.
Rickel, D G. Wed . "Ross Priory workshop presentation. [Calculated cool down time for 60 Tesla magnet]". United States.
@article{osti_7038787,
title = {Ross Priory workshop presentation. [Calculated cool down time for 60 Tesla magnet]},
author = {Rickel, D G},
abstractNote = {We calculated the cool down time for the outer coil of the 60 Tesla 100 ms research magnet under design at the US High Magnetic Field Laboratory. A drawing of the magnet system is shown in Fig. 1. This is a preliminary design and will undoubtedly differ from the final design. We chose convenient conductor cross sections for the solenoid and assumed a packing factor of 0.75. The 25% conductor void was assumed to be filled with insulation having the thermal properties of an epoxy glass resin mixture. Our approach was to use a 2D axisymmetric finite element calculation to accurately model a radial slice from the midplane of the solenoid. This model consisting of alternating layers of insulation and conductor is shown in Fig. 2. We compared the results from this model to those of a one material model with smeared thermal properties. The smeared properties were adjusted so that comparable thermal diffusion times were obtained by both methods. Using the smeared properties we were able to model a 2D cross section of the solenoid with all the boundaries specified while avoiding the necessity of the complex meshing of conductors and insulators. Long simulation run times were thus avoided, and we were able to quickly modify the geometry to test cooling methods.},
doi = {},
url = {https://www.osti.gov/biblio/7038787}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Conference:
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