Multiple coil pulsed magnetic resonance method to measure the SSC bending magnet multipole moments. Progress report, February 1, 1991--May 31, 1992
This Final Report presents a summary of the performance of a 32-coil pulsed nuclear magnetic resonance field mapping system for mapping SSC dipole magnets that was developed with the support of Contract DE-AC0287ER40350. It measures the magnetic multipole moment coefficients up to a{sub 15} and b{sub 15} in a warm bore tube along the 98% of the length of the magnet that has a field homogeneous enough for NMR measurements. The 1 cm long active region of the probe permits it to measure the 8.5 cm periodicity of the coefficients attributed to the twist pitch of the superconducting cable. The system`s measurement rate of four measurements per second allows it to probe the dynamic behavior of the coefficients down to a time scale of .25 seconds in swept field and other transient field situations. An analysis of the errors in the measurements and a comparison with measurements by the Brookhaven Mole on SSC dipole DCA317 is discussed along with an extended set of measurements on this magnet near the injection field of 0.67 T and 2.2 T.
- Research Organization:
- California Univ., Los Angeles, CA (United States). Dept. of Physics
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-87ER40350
- OSTI ID:
- 10114945
- Report Number(s):
- DOE/ER/40350-7; ON: DE93006465
- Resource Relation:
- Other Information: PBD: 7 Jan 1993
- Country of Publication:
- United States
- Language:
- English
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