Techniques for measurement of dipole endfields with a rigid integrating coil [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- 5 pages : digital, PDF file
- Additional Creators:
- Fermi National Accelerator Laboratory
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information - Access Online:
- www.osti.gov
- Summary:
- The endfield is often one of the most critical regions in conventional accelerator magnets. While the magnetic field structure of dipole ends can be complicated, it can be well described by a few parameters which include the effective magnetic length, L{sub eff}, and the integrated harmonics. Both of these parameters can be measured using a rigid coil which measures ∫ Bdl in the endfield region as a function of insertion depth z and transverse displacement x. We employ a data analysis technique which uses these measurements to remove body field contributions to the end field integral, resulting in the effective integrated endfield shape. A least squares polynomial fit is then used to estimate the harmonic coefficients up to decapole. We also present the technique for measuring L{sub eff} as a function of magnet current. These measurement techniques were successfully used in a study to finalize the design of the endpacks for the Fermilab Main Injector Dipole. The techniques are sufficiently general to be useful for other applications, such as the testing of the SSC Medium Energy Booster endpacks.
- Subject(s):
- Note:
- Published through SciTech Connect.
07/01/1993.
"fnal/c--93/220"
" conf-930511--382"
"DE93019389"
PAC `93: international particle accelerator conference,Washington, DC (United States),17-20 May 1993.
Glass, H.D. - Funding Information:
- AC02-76CH03000
View MARC record | catkey: 14693838