Title :
Design and considerations on long Nb3Sn high field magnets for hadron colliders
Author :
Yamada, Ryuji ; Wake, Masayoshi ; Kim, Seog-Whan ; Wands, Robert H.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
Design studies for long high field Nb3Sn superconducting magnets for hadron colliders are described, taking a 10 meter magnet with a cosine-theta type coil as an example. The problems and complications are discussed in comparison with short magnets of 1 meter length, using MIIT calculations and quench simulation. As the stored energy in the high field Nb3Sn magnets is quite large, close attention must be paid to all design details, and especially the extraction of the stored energy. The extensive use of heaters on the coil surface is simulated to dump the energy on the coil body itself. The MIIT value of the Nb3Sn superconducting cable should be made large for safe operation. This is done by increasing the copper ratio. According to the results of this study, an 11.5 Tesla magnet might be the limiting case for the design of a practical accelerator high field magnet
Keywords :
accelerator magnets; colliding beam accelerators; multifilamentary superconductors; niobium alloys; superconducting cables; superconducting coils; superconducting magnets; tin alloys; 1 m; 10 m; 11.5 T; MIIT calculations; Nb3Sn; Nb3Sn high field magnets; Nb3Sn superconducting cable; coil surface heaters; copper ratio; cosine-theta type coil; hadron colliders; quench simulation; stored energy extraction; Accelerator magnets; Copper; Large Hadron Collider; Niobium; Niobium-tin; Superconducting cables; Superconducting coils; Superconducting integrated circuits; Superconducting magnets; Telephony;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
