Design concepts for the ASTROMAG cryogenic system

Conference · Mon Jun 01 00:00:00 EDT 1987

OSTI ID:6094283

Green, M A; Castles, S

This paper describes the proposed cryogenic system used to cool the superconducting magnet for the Space Station based ASTROMAG Particle Astrophysics Facility. This 2-meter diameter superconducting magnet will be cooled using stored helium II. The paper presents a liquid helium storage concept which would permit cryogenic lifetimes of up to 3 years between refills. It is proposed that the superconducting coil be cooled using superfluid helium pumped by the thermomechanical effect. It is also proposed that the storage tank be resupplied with helium in orbit. A method for charging and discharging the magnet with minimum helium loss using split gas-cooled leads is discussed. A proposal to use a Stirling cycle cryocooler to extend the storage life of the cryostat will also be presented.

• Research Organization: Lawrence Berkeley Lab., CA (USA); National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6094283
• Report Number(s): LBL-23822; CONF-8706125-13; ON: DE87014683
• Resource Relation: Conference: Cryogenic engineering conference, St. Charles, IL, USA, 14 Jun 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SPACE VEHICLES
SUPERCONDUCTING MAGNETS
CRYOGENICS
DESIGN
CRYOSTATS
HELIUM
PUMPS
SAFETY
STIRLING CYCLE
STORAGE LIFE
SUPERFLUIDITY
CONTROL EQUIPMENT
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELEMENTS
EQUIPMENT
FLUIDS
GASES
MAGNETS
NONMETALS
RARE GASES
SUPERCONDUCTING DEVICES
THERMODYNAMIC CYCLES
THERMOSTATS
VEHICLES
420201* - Engineering- Cryogenic Equipment & Devices