Forced flow cooling of ISABELLE dipole magnets

Conference · Thu Jan 01 00:00:00 EST 1976

OSTI ID:7145264

Bamberger, J A; Aggus, J; Brown, D P; Kassner, D A; Sondericker, J H; Strobridge, T R

The superconducting magnets for ISABELLE will use a forced flow supercritical helium cooling system. In order to evaluate this cooling scheme, two individual dipole magnets were first tested in conventional dewars using pool boiling helium. These magnets were then modified for forced flow cooling and retested with the identical magnet coils. The first evaluation test used a l m-long ISA model dipole magnet whose pool boiling performance had been established. The same magnet was then retested with forced flow cooling, energizing it at various operating temperatures until quench occurred. The magnet performance with forced flow cooling was consistent with data from the previous pool boiling tests. The next step in the program was a full-scale ISABELLE dipole ring magnet, 4.25 m long, whose performance was first evaluated with pool boiling. For the forced flow test the magnet was shrunk-fit into an unsplit laminated core encased in a stainless steel cylinder. The high pressure gas is cooled below 4 K by a helium bath which is pumped below atmospheric pressure with an ejector nozzle. The performance of the full-scale dipole magnet in the new configuration with forced flow cooling, showed a 10 percent increase in the attainable maximum current as compared to the pool boiling data.

• Research Organization: Brookhaven National Lab., Upton, N.Y. (USA)
• DOE Contract Number: E(30-1)-16
• OSTI ID: 7145264
• Report Number(s): BNL-21706; CONF-760829-36; TRN: 76-023032
• Resource Relation: Conference: Applied superconductivity conference, Stanford, CA, USA, 17 Aug 1976
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ISABELLE STORAGE RINGS
SUPERCONDUCTING MAGNETS
COOLING SYSTEMS
DEWARS
DIPOLES
PERFORMANCE TESTING
POOL BOILING
QUENCHING
BOILING
CONTAINERS
CRYOGENICS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
HEAT TREATMENTS
MAGNETS
MULTIPOLES
PHASE TRANSFORMATIONS
STORAGE RINGS
SUPERCONDUCTING DEVICES
TESTING
430400* - Particle Accelerators- Storage Rings
420201 - Engineering- Cryogenic Equipment & Devices