Title :
Monte Carlo calculation of strand position in CIC conductor to analyze mechanical loss
Author :
Nishijima, Sigehiro ; Sasaki, Tomoki ; Takahata, Kazuya ; Satow, Takasli
Author_Institution :
Inst. of Sci. & Ind. Res., Osaka Univ., Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
Strand position in a cable-in-conduit (CIC) conductor has been calculated by means of Monte Carlo method in order to analyze the stability of the CIC conductor which was employed in the Large Helical Device. The calculated data were compared with the experimental results. It is found that the strands move due to the electromagnetic force and do not return to the original position even when the current becomes zero. The pressure drop changes with the number of excitation time. The mechanical loss originated from the frictional motion between strands is induced during the charging-discharging process. The contact stress between strands changes with the transport current and the number of excitation time
Keywords :
Monte Carlo methods; accelerator RF systems; electromagnetic forces; fusion reactor design; losses; stellarators; superconducting cables; superconducting coils; superconducting magnets; Large Helical Device; Monte Carlo calculation; charging-discharging process; contact stress; electromagnetic force; frictional motion; mechanical loss; mechanical loss analysis; pressure drop; stability analysis; strand movement; strand position; superconducting coils; transport current; Conductors; Cooling; Mechanical cables; Monte Carlo methods; Potential energy; Stability analysis; Stress; Superconducting cables; Superconducting coils; Superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
