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Design and characterization of combined function multipole magnet for accelerators.
1Raja Ramanna Centre for Advanced Technology, Indore-452013, India.
The Review of Scientific Instruments
|January 7, 2009
Summary
This study details a combined-function magnet for accelerators, integrating skew quadrupole, horizontal dipole, vertical dipole, and sextupole magnets. Independent control and theoretical/experimental validation confirm its design for precise magnetic field generation.
Area of Science:
- Accelerator Physics
- Electromagnet Design
Background:
- Particle accelerators require precise magnetic fields for particle beam control.
- Combined-function magnets offer space and cost efficiencies by integrating multiple magnetic elements.
Purpose of the Study:
- To design and analyze a multipurpose combined-function magnet for accelerator applications.
- To independently control skew quadrupole, horizontal dipole, vertical dipole, and sextupole magnetic fields.
Main Methods:
- First-order perturbation theory for estimating excitation strength and multipole components.
- Experimental measurements of sextupole strength and higher-order multipoles under skew quadrupole excitation.
- Two-dimensional finite element code (Poisson) simulations.
Main Results:
- Theoretical predictions, experimental data, and simulation results for magnetic field variations show good agreement.
- The magnet allows independent variation of all four magnetic field components.
- The study validates theoretical models even under magnet saturation conditions.
Conclusions:
- The designed combined-function magnet is suitable for accelerator applications.
- The integrated design allows for precise and independent control of multiple magnetic field parameters.
- The findings support the use of perturbation theory and finite element analysis for magnet design validation.
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