Test Results on Nb3Sn Dipole Magnets

Conference · Thu Dec 12 00:00:00 EST 1996

OSTI ID:1004209

Lietzke, A F; Benjegerdes, R; Caspi, S; Dell'Orco, D; Harnden, W; McInturff, A D; Morrison, M; Scanlan, R M; Taylor, C E; Oort, J.M. van

A cosine theta type dipole magnet using Nb{sub 3}Sn conductor have been designed, built and tested. D19H is a two-layer dipole magnet with a Nb{sub 3}Sn inner layer and a NbTi outer layer. Coil-pairs are connected with two of the four Nb{sub 3}Sn splices in a high field region, and compressed by a ring and collet system. It trained well at 4.4K, but poorly at 1.8K. Strain gages revealed that the coil-ends were not loaded well enough for high field operation (after cool-down), so another thermal cycle is planned. The low end-load is believed to be the cause of several mysteries observed during operation. Except for the outer-layer 1.8 K training difficulty, the magnet's operation was encouraging.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Accelerator& Fusion Research Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 1004209
• Report Number(s): LBL-38311; TRN: US201103%%465
• Resource Relation: Conference: Applied Superconductivity Conference, Pittsburgh, PA, August 25-30, 1996
• Country of Publication: United States
• Language: English

Related Subjects

99
DIPOLES
MAGNETS
STRAIN GAGES
SUPERCONDUCTIVITY
TRAINING