Pulsed-Mode Magnetic Field Measurements with a Single Stretched Wire System

Area of Science:

• Particle Accelerators
• Magnet Technology
• Experimental Physics

Background:

• Accurate magnetic field characterization is vital for synchrotron beam stability.
• Traditional magnetic field measurement methods often involve trade-offs between accuracy and versatility.
• The single stretched wire (SSW) method is versatile but requires steady-state magnet excitation.

Purpose of the Study:

• To introduce and validate a novel pulsed single stretched wire (SSW) method for measuring time-varying magnetic fields.
• To enable rapid magnetic field measurements in synchrotrons, improving efficiency and saving power.
• To provide a more versatile tool for characterizing bending dipole magnets.

Main Methods:

• Development of the pulsed single stretched wire (SSW) measurement principle.
• Integration of the pulsed SSW with the classic DC SSW method for absolute magnetic field calculation.
• Case study using a bending magnet from the Proton Synchrotron Booster at CERN.
• Comparison of pulsed SSW dynamic measurements with a fixed induction coil.

Main Results:

• The pulsed SSW method successfully measures rapidly time-varying magnetic fields.
• Coil calibration adjustments are necessary based on field levels when using induction coils.
• The pulsed SSW method demonstrates comparable accuracy to the standard SSW method.
• Primary noise contributors to the pulsed SSW measurements were identified and analyzed.

Conclusions:

• The pulsed SSW method offers a viable solution for dynamic magnetic field measurements in synchrotrons.
• This novel approach enhances measurement efficiency and flexibility for magnet characterization.
• The pulsed SSW method contributes to improved beam stability through accurate, rapid field analysis.