Design of the Nb{sub 3}Sn dipole D20

Conference · Sat Aug 01 04:00:00 EDT 1992

OSTI ID:10191604

Dell`Orco, D; Scanlan, R; Taylor, C E

The design of a 50 mm bore superconducting Nb{sub 3}Sn dipole with a short sample field of 13 T at 4.3 K and a current of 5500 A/turn is presented. The magnet is composed by two double pancake layers. The inner cable has 37 strands with a strand diameter of 0.75 mm and a Cu/Sc ratio of 0.4; the outer cable has 47 strands with a diameter of 0.48 mm and a Cu/Sc ratio of 1.15. In order to obtain a high transfer function and low saturation effects on the multipoles, the stainless steel collar is elliptical and the iron yoke is ``close-in.`` The thin collar itself provides only a minimum prestress and the full prestress of 100 MPa is given by a 25 mm welded stainless steel shell or by winding a wire around the yoke. Aluminum spacers are used as assembly tools and as a means to control the gap size in the vertically split iron yoke. This paper presents the magnetic design and the calculated stress and strain distribution in structure and coils. A 1 m model called D20 is to be built and tested at LBL.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 10191604
• Report Number(s): LBL--32072; CONF-920802--26; ON: DE93002578
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303
665412
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DESIGN
EXPERIMENTAL FACILITIES AND EQUIPMENT
MAGNETIC DIPOLES
MECHANICAL PROPERTIES
NIOBIUM BASE ALLOYS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTING SUPER COLLIDER
TIN ALLOYS
WELDED JOINTS