Magnetic fields for transporting charged beams

Technical Report · Thu Jan 01 00:00:00 EST 1976

DOI:https://doi.org/10.2172/7254841· OSTI ID:7254841

Parzen, G

The transport of charged particle beams requires magnetic fields that must be shaped correctly and very accurately. During the last 20 years or so, many studies have been made, both analytically and through the use of computer programs, of various magnetic shapes that have proved to be useful. Many of the results for magnetic field shapes can be applied equally well to electric field shapes. A report is given which gathers together the results that have more general significance and would be useful in designing a configuration to produce a desired magnetic field shape. The field shapes studied include the fields in dipoles, quadrupoles, sextupoles, octupoles, septum magnets, combined-function magnets, and electrostatic septums. Where possible, empirical formulas are proposed, based on computer and analytical studies and on magnetic field measurements. These empirical formulas are often easier to use than analytical formulas and often include effects that are difficult to compute analytically. In addition, results given in the form of tables and graphs serve as illustrative examples. The field shapes studied include uniform fields produced by window-frame magnets, C-magnets, H-magnets, and cosine magnets; linear fields produced by various types of quadrupoles; quadratic and cubic fields produced by sextupoles and octupoles; combinations of uniform and linear fields; and septum fields with sharp boundaries.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 7254841
• Report Number(s): BNL-50536; TRN: 77-014004
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM TRANSPORT
MAGNETS
MAGNETIC FIELDS
BEAM BENDING MAGNETS
CALCULATION METHODS
DIPOLES
ELECTROSTATIC LENSES
EQUATIONS
HEXAPOLES
MATHEMATICAL MODELS
OCTUPOLES
QUADRUPOLES
REVIEWS
SEPTUM MAGNETS
DOCUMENT TYPES
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
LENSES
MULTIPOLES
OPTICAL SYSTEMS
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics