Final Report for Radiaiton Resistant Magnets for RIA

Technical Report · Wed Jul 27 00:00:00 EDT 2005

DOI:https://doi.org/10.2172/841880· OSTI ID:841880

Zeller, A F

Report on techniques for the fabrication of radiation resistant magnets for the RIA Fragment Separator. The development of magnet designs capable of reasonable life times in high-radiation environments and having reasonable performance is of paramount importance for RIA as well as other high-intensity projects under consideration, such as the Neutrino Factory and FAIR project at GSI. Several approaches were evaluated for radiation resistant superconducting magnets. One approach was to simply use a more radiation resistant epoxy for the coil fabrication. Another approach for cryostable magnets, like the S800 Spectrograph dipole, is the use of all-inorganic materials. The final approach was the development of radiation resistant Cable-In-Conduit-Conductor (CICC) like that used in fusion magnets; though these are not radiation resistant because an organic insulator is used. Simulations have shown that the nuclear radiation heating of the first quadrupoles in the RIA Fragment Separator will be so large that cold mass minimization will be necessary with the magnet iron being at room temperature. Three different types of conductor for radiation resistant superconducting magnets have been built and successfully tested. The cyanate ester potted coils will work nicely for magnets where the lifetime dose is a factor of 20 less than the end of life of the superconductor and the rate of energy deposition is below the heat-removal limit of the coil. The all-inorganic cryostable coil and the metal oxide insulated CICC will provide conductor that will work up to the life of the superconductor and have the ability to remove large quantities of nuclear heating. Obviously, more work needs to be done on the CICC to increase the current density and to develop different insulations; and on the cyanate esters to increase the heat transfer.

• Research Organization: Michigan State Univ., East Lansing, MI (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: FG02-03ER41254
• OSTI ID: 841880
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
43 PARTICLE ACCELERATORS
CURRENT DENSITY
CYANATES
ESTERS
FABRICATION
HEAT TRANSFER
HEATING
IRON
LIFETIME
MAGNETS
MINIMIZATION
NEUTRINOS
ORGANIC INSULATORS
OXIDES
QUADRUPOLES
RADIATION HEATING
RADIATIONS
SUPERCONDUCTING MAGNETS
SUPERCONDUCTORS
radiation resistant
magnets
materials