Author: Abdyukhanov, I.M.
Paper Title Page
THP011 Niobium Semiproducts for the Superconducting Strands and SRF Cavities in Russia 857
 
  • M.V. Alekseev, I.M. Abdyukhanov, V.A. Drobyshev, M.V. Kravtsova, M.V. Krylova, P.A. Lykianov, K.A. Mareev, V.I. Pantsyrny, M.V. Polikarpova, M.M. Potapenko, A.G. Silaev, A.S. Tsapleva
    SC A A Bochvar High-Technology Research Institute of Inorganic Materials, Moscow, Russia
  • M.Y. Shlyakhov, S.M. Zernov
    JSC - TVEL, Moscow, Russia
  
  The melt­ing regimes of the nio­bium in­gots with high chem­i­cal pu­rity and low hard­ness for the Nb3Sn, NbTi and other su­per­con­duct­ing ma­te­ri­als man­u­fac­ture have been de­vel­oped at SC "VNI­INM". Using this nio­bium ma­te­r­ial and by the SC "VNI­INM" man­u­fac­ture regimes at the SC "Chep­et­sky Me­chan­i­cal Plant" 220 tons of Nb3Sn and NbTi strands for ITER and 12 km of Nb3Sn strands for HL-LHC (CERN) with the re­quired char­ac­ter­is­tics have been suc­cess­fully pro­duced. The re­view of the char­ac­ter­is­tics of the dif­fer­ent semi­prod­ucts (sheets, tubes, rods), made in Rus­sia from the spe­cial grade nio­bium, and of the su­per­con­duct­ing strands, man­u­fac­tured with the use of them, is pre­sented in the paper. The ways of the fur­ther im­prove­ment of the nio­bium in­gots melt­ing regimes and nio­bium sheets de­for­ma­tion and an­neal­ing regimes with the tar­get of achiev­ing RRR > 300 for the SRF cav­i­ties ap­pli­ca­tion are dis­cussed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2019-THP011  
About • paper received ※ 23 June 2019       paper accepted ※ 04 July 2019       issue date ※ 14 August 2019  
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