Design of epoxy-free superconducting dipole magnets and performance in both Helium I and pressurized Helium II

Conference · Sun Mar 01 04:00:00 EST 1981

OSTI ID:6446420

Taylor, C; Althaus, R; Caspi, S; Gilbert, W; Hassenzahl, W; Meuser, R; Rechen, J; Warren, R

Three model superconducting dipole magnets 1m long, without iron, having a bore diameter of 76 mm have been built without epoxy resins or other adhesives and tested in He I and He II. The conductor is the 23-strand Rutherford-type cable used in the Fermilab Doubler Saver magnets, and is insulated with Mylar and Kapton. The two-layer winding is highly compressed by a system of structural support rings and tapered collets. Little training was required to reach quench currents greater than 95% of short sample in Helium I. The maximum quench current in He II is increased 20 to 30%, compared with He I operation at 4.4 K. Test results are given on cyclic losses, heater-induced quenches, and charge-rate effects.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6446420
• Report Number(s): LBL-12455; CONF-810340-8
• Country of Publication: United States
• Language: English

Related Subjects

420201 -- Engineering-- Cryogenic Equipment & Devices
43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIPOLES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
ELECTROMAGNETS
EQUIPMENT
FABRICATION
MAGNETS
MULTIPOLES
PERFORMANCE TESTING
QUENCHING
STRUCTURAL MODELS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TESTING
ULTRALOW TEMPERATURE