Developments of a Pulse Kicker System for the Three-Dimensional Spiral Beam Injection of the J-PARC Muon g-2/EDM Experiment

The development of a vertical kicker system is an important part of a three-dimensional spiral-injection scheme. The beam injected at a pitch angle of a few tens of degrees was controlled by applying a pulsed magnetic field using a vertical kicker system inside the storage magnet. The stored muon be...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2022-09, Vol.32 (6), p.1-4
Main Authors: Oda, K., Iinuma, H., Hirayama, H., Abe, M., Sasaki, K., Ohsawa, S., Nakayama, H., Saito, N., Furukawa, K., Mibe, T., Takayanagi, T., Rehman, M. A., Matsushita, R.
Format: Article
Language:English
Subjects:
Beam injection
Focusing
J-PARC muon g-2/EDM experiment
kicker magnetic field
Magnetic field measurement
Magnetic fields
Magnetic resonance imaging
Mesons
Muons
Particle beams
Pitch (inclination)
Proton accelerators
Solenoids
Spirals
three-dimensional spiral injection
time range of kicker timing
Vertical oscillations
weak focusing magnetic field
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Summary:The development of a vertical kicker system is an important part of a three-dimensional spiral-injection scheme. The beam injected at a pitch angle of a few tens of degrees was controlled by applying a pulsed magnetic field using a vertical kicker system inside the storage magnet. The stored muon beam then followed a vertical betatron motion around the midplane of the storage magnet owing to the weak focusing magnetic field. Accurate control of the pulsed kick is crucial for minimizing the amplitude of the vertical betatron oscillation. The specifications of the pulsed magnetic field and detailed design of the kicker system at the test beam bench are discussed herein.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2022.3164996