Conveners
M2Or1C - Thermal Properties, Radiation Effects & Degradation
- Hyung-Seop Shin (Andong National University)
- Klaus-Peter Weiss (KIT, Institute for Technical Physics)
Nb3Sn superconducting wires are used for TF coils of ITER. Since fusion neutrons will stream out of a plasma vacuum vessel and reach TF coils, the conductors will be irradiated by the neutrons. The bronze-root Nb3Sn wire and the internal-Sn Nb3Sn wire were neutron irradiated at a fission reactor in Belgium and the critical current of the irradiated samples were evaluated with 15.5 T...
In superconducting magnet system of fusion machines, glass fiber reinforced composite insulation material is the main candidate which is used for insulation material of superconducting magnet coils, Electrical insulation breaks, structural and support material for electrical isolation. Even after blanket shielding, the irradiation effect of neutron, degrades the properties of insulation...
The Future Circular Collider study (FCC) includes the design of detector magnets for the FCC-ee (electron-positron), covering the energy range 90 to 400 GeV and requiring a 2 T solenoid for particle spectrometry, and for the FCC-hh (proton-proton) with 100 TeV collision energy and a 4 T detector solenoid. For both solenoids and their cryostats, CERN is developing an innovative and challenging...
We present the measured thermal resistance of copper-to-copper interfaces with several intermediate contact-enhancing materials as a function of temperature and pressure. Devices such as superconducting coils are increasingly being operated conduction-cooled, with a cryo-cooler acting as a drain for heat loads. The interface with the cooler typically involves at least one clamped connection to...
G. Churu1, J. A. Demko1 , A. Mole1, R. C. Duckworth2, H. Lu3, S. Malakooti3, N. Leventis4
1LeTourneau University, 2100 South Mobberly Avenue, Longview, TX 75607 USA
2Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN, 3783, USA
3The University of Texas at Dallas, Richardson, TX, 75080, USA
4Missouri University of Science and Tecnology, Rolla, MO 65409, USA
The use and...
Although the low temperature thermal expansion properties of quite a few materials have been reported in the literature, the need for the confirmation of the relatively sparse data and the generation of new data for different and new materials is needed. Here we report thermal expansion measurement data on an array of materials ranging from neat resins to high strength super-alloys as well as...
The Macroflash instrument is a flat plate boiloff calorimeter that provides effective thermal conductivity (ke) data for a wide range of materials from thermal insulation to structural composites to ceramics. This device has become an indispensable tool for NASA researchers in recent years. The apparatus and method provide a practical, standardized approach to measure heat transmission through...
