Thermo-mechanical characterization of insulated and epoxy-impregnated Nb3Sn composites

Conference · Wed Dec 11 04:00:00 EST 2002

OSTI ID:805790

Imbasciati, Linda ^[1]

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1. Fermilab

Nb{sub 3}Sn is, at present, the best superconductor for high field accelerator magnets. Several models using Nb{sub 3}Sn are under development in many laboratories. Knowledge of the thermo-mechanical properties of the impregnated coils is of crucial importance for the design of these magnets. In fact, the performance of epoxy-impregnated coils is sensitive to the thermal conductivity value, especially in case of heating caused by hysteretic losses, which are usually relevant in Nb{sub 3}Sn magnets, and in the case of continuous heat deposition, such as in magnets near the interaction region of a collider. Thermal contraction measurements are necessary to estimate the stresses during the magnet thermal cycle. Different insulation materials have been studied at Fermilab utilizing various design approaches and fabrication methods. Thermal conductivity and thermal contraction measurements, at cryogenic temperatures, have been performed respectively at INFN-LASA and Fermilab. The results are reported and discussed in this paper.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 805790
• Report Number(s): FERMILAB-Conf-02/299-E
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
CONTRACTION
CRYOGENICS
DEPOSITION
DESIGN
FABRICATION
FERMILAB
HEATING
MAGNETS
STRESSES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMAL CONDUCTIVITY