Studies on stabilities of superconducting Rutherford cables

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Advances in Cryogenic Engineering

OSTI ID:482137

Kim, S W; Kumura, N; Makida, Y ^[1]

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1. National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan); and others

Superconducting accelerator magnets have shown different excitation ramp rate dependencies in the quench current. One of the main reasons of the above degradation is caused by AC losses, which is easily affected by curing conditions, between strands of the Rutherford cables. Other reasons have not been clarified at this moment. It is possible that the current sharing among strands in steady state or transient state induces the instability of the cable. The authors have measured the minimum quench energies of two types of the Rutherford cables with a Cu matrix and a CuMn barrier inside a Cu sheath. Normal zone propagation speeds in longitudinal and transverse direction also have been measured in conjunction with their interstrand resistances by using voltage taps attached to each strand. These results are discussed with analysis.

• OSTI ID: 482137
• Report Number(s): CONF-950722--
• Journal Information: Advances in Cryogenic Engineering, Journal Name: Advances in Cryogenic Engineering Vol. 42B; ISSN 0065-2482; ISSN ACYEAC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
COPPER ALLOYS
MANGANESE ALLOYS
NIOBIUM BASE ALLOYS
QUENCHING
STABILITY
STABILIZED SUPERCONDUCTORS
SUPERCONDUCTING CABLES
TITANIUM ALLOYS