Advanced materials, strands, and conductors for particle accelerators. Technical report for the year 1994
The authors research for the Division of High Energy Physics (HEP) began with studies of both the superconducting and matrix components of multifilamentary composites, viz (1) attempts to increase the flux-pinning strength in NbTi, and (2) a method of suppressing proximity effect coupling in fine-filament strands. The latter was fully successful, and stands ready to be invoked as soon as the need arises to: (a) very closely space the filaments in the interests of quality, or (b) re-introduce fine-filament composites for strand-magnetization reduction or AC-loss minimization. But there were also many spin-offs during the life of the program, as indicated in the complete list of publications (copy available on request). For instance, the various other effects and properties that were studied and published over the period of this association with HEP include: (i) reduction in T{sub c} due to proximity effect between thin {alpha}phase precipitates and the NbTi matrix, (ii) critical field enhancement with reduction of filament diameter in fine-filament composites, (iii) studies and systematics of AC loss in composite strands, (iv) compensation of strand magnetization by means of Ni plating or filament substitution, (v) hysteretic loss due to surface pinning in multifilamentary NbTi, (vi) flux creep in SSC-type strands, (vii) temperature and field dependence of eddy current decay, (vii) influence of Mn doping on the properties of NbTi, (viii) transverse and longitudinal resistivities (including a size-effect contribution) in strands with various filament/matrix configurations.
- Research Organization:
- Battelle Memorial Inst., Columbus, OH (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-93ER40763
- OSTI ID:
- 35331
- Report Number(s):
- DOE/ER/40763-T1; ON: DE95008635; TRN: 95:009619
- Resource Relation:
- Other Information: PBD: 6 Sep 1994
- Country of Publication:
- United States
- Language:
- English
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