Cryogenic tests of glass-epoxy based electrical insulation
A thin superconducting solenoid for the Time Projection Chamber (TPC) experiment at PEP was constructed at Lawrence Berkeley Laboratory (LBL) in 1979 and tested in 1980. A failure of the ground plane insulation damaged the coil to the point that it required rebuilding. An extensive study of this failure indicated that an iron chip embedded in the bore tube had penetrated the insulation. Before rebuilding the coil, an investigation of the insulation system was done with the goal of determining the most reliable techniques and materials for withstanding high voltages in the coil package. The experience with the TPC coil and its prototypes indicate that glass cloth vacuum-impregnated with epoxy is an excellent material for cryogenic applications from the mechanical standpoint. Further, since the LBL assembly shop had extensive experience with the epoxy formulation used in the coil, there was reluctance to change that component. Therefore, the investigation concentrated on different types of glass cloth and on composites containing glass cloth.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6127090
- Report Number(s):
- LBL-12782; CONF-810835-11; ON: DE81028144
- Resource Relation:
- Conference: 1981 cryogenic engineering conference, San Diego, CA, USA, 10 Aug 1981
- Country of Publication:
- United States
- Language:
- English
Similar Records
BPX insulation irradiation program test results
Low-temperature mechanical properties of glass/epoxy laminates
Related Subjects
GENERAL PHYSICS
ELECTRICAL INSULATION
DIELECTRIC PROPERTIES
PROJECTION SPARK CHAMBERS
SUPERCONDUCTING MAGNETS
CRYOSTATS
EPOXIDES
EXPERIMENTAL DATA
FIBERGLASS
PERFORMANCE
CONTROL EQUIPMENT
DATA
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETS
EQUIPMENT
GAS TRACK DETECTORS
INFORMATION
MAGNETS
MEASURING INSTRUMENTS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATION DETECTORS
SPARK CHAMBERS
SUPERCONDUCTING DEVICES
THERMOSTATS
420201* - Engineering- Cryogenic Equipment & Devices