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R&D of Nb/sub 3/Sn accelerator magnets at Fermilab

By: Zlobin, A.V.; Yarba, V.; Andreev, N.; Barzi, E.; Bordini, B.; Bossert, R.; Carcagno, R.; Chichili, D.R.; DiMarco, J.; Elementi, L.; Feher, S.; Kashikhin, V.S.; Kashikhin, V.V.; Kephart, R.; Lamm, M.; Limon, P.J.; Novitski, I.; Orris, D.; Pischalnikov, Y.; Schlabach, P.; Stanek, R.; Strait, J.; Sylvester, C.; Tartaglia, M.; Tompkins, J.C.; Turrioni, D.; Velev, G.; Yamada, R.; Ambrosio, G.;

2005 / IEEE


This item was taken from the IEEE Periodical ' R&D of Nb/sub 3/Sn accelerator magnets at Fermilab ' Fermilab is developing and investigating different high-field magnets (HFM) for present and future accelerators. The HFM R&D program focused on the 10-12 T magnets based on Nb/sub 3/Sn superconductor and explored both basic magnet technologies for brittle superconductors-wind-and-react and react-and-wind. Magnet design studies in support of LHC upgrades and VLHC were conducted. A series of 1-m long cos-theta dipole models based on the wind-and-react technique was fabricated and tested. Three 1-m long flat racetracks and the common coil dipole model, based on a single-layer coil and react-and-wind technique, were also fabricated and tested. Extensive theoretical and experimental studies of electro-magnetic instabilities in Nb/sub 3/Sn strands, cables and magnets were performed and led to a successful 10 T dipole model. This paper presents the details of Fermilab's HFM program, reports its status and major results, and formulates the next steps for the program.