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Related Concept Videos

Magnetic Field of a Solenoid01:18

Magnetic Field of a Solenoid

A solenoid is a conducting wire coated with an insulating material, wound tightly in the form of a helical coil. The magnetic field due to a solenoid is the vector sum of the magnetic fields due to its individual turns. Therefore, for an ideal solenoid, the magnetic field within the solenoid is directly proportional to the number of turns per unit length and the current. Conversely, the magnetic field outside the solenoid is zero.
Consider a solenoid with 100 turns wrapped around a cylinder of...

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Plasma instability inside solenoid with laser ion source.

The Review of scientific instruments·2020
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Evaluation method of beam instability in laser ion source using solenoid.

Takahiro Karino1

  • 1Graduate School of Engineering, Utsunomiya University, Utsunomiya 321-8585, Japan.

The Review of Scientific Instruments
|April 9, 2020
PubMed
Summary

Quantifying ion beam instability in laser ion sources is challenging. This study introduces a novel waveform analysis method to accurately evaluate beam instability, improving diagnostics for laser-induced plasma.

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Area of Science:

  • Plasma Physics
  • Beam Dynamics
  • Ion Source Technology

Background:

  • Laser ion sources utilize solenoid fields for ion beam confinement.
  • Ion beam instability occurs within specific magnetic field ranges, complicating diagnostics.
  • Traditional metrics like peak current are insufficient due to temporal profile irregularities and amplitude fluctuations.

Purpose of the Study:

  • To propose and validate a new method for quantifying ion beam instability in laser ion sources.
  • To establish a more reliable metric for identifying and characterizing unstable beam behavior.
  • To enhance the understanding and control of beam dynamics in solenoid-confined systems.

Main Methods:

  • Development of a novel evaluation method based on the difference from an average waveform.
  • Experimental acquisition of ion beam waveforms from stable and unstable regions.
  • Comparative analysis of the proposed method against traditional metrics (variation of maximum value, variation of integral).

Main Results:

  • The proposed waveform difference method effectively captures beam instability.
  • Traditional methods were found to be less reliable in quantifying instability.
  • The new method demonstrated superior performance in distinguishing stable and unstable beam conditions.

Conclusions:

  • The difference from an average waveform is the most appropriate method for evaluating beam instability in laser ion sources.
  • This method provides a more accurate and robust diagnostic tool for laser-induced plasma.
  • Improved instability quantification will aid in optimizing laser ion source performance and stability.