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

• Published in: IEEE transactions on applied superconductivity 2005-06, Vol.15 (2), p.1113-1118
• Main Authors: Zlobin, A.V., Ambrosio, G., 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., Yarba, V.
• Format: Article
• Language: English
• Subjects: Accelerator magnets; Dipoles; Large Hadron Collider; Magnetic materials; Niobium compounds; quadrupoles; Research and development; superconducting accelerator magnets; Superconducting cables; Superconducting coils; Superconducting magnets; Superconducting materials; Tin
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2005.849507

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.