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Note: Simulation and test of a strip source electron gun.

Munawar Iqbal1, G U Islam1, I Misbah1

  • 1Centre for High Energy Physics, University of the Punjab, Lahore 45590, Pakistan.

The Review of Scientific Instruments
|July 3, 2014
PubMed
Summary
This summary is machine-generated.

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This study details a focused electron beam gun, achieving a 3.04 mm diameter and high power density. The simple, inexpensive design is ideal for advanced accelerators technology.

Area of Science:

  • Physics
  • Engineering
  • Accelerator Technology

Background:

  • Electron beam guns are critical components in various scientific and technological applications, including particle accelerators.
  • Optimizing electron beam characteristics such as focus, emission current, and power density is essential for enhancing performance.

Purpose of the Study:

  • To simulate and experimentally validate an indirectly heated strip source electron beam gun assembly.
  • To evaluate the beam's focusing capabilities, emission characteristics, and overall performance.

Main Methods:

  • Utilized the Stanford Linear Accelerator Center (SLAC) electron beam trajectory program for simulations.
  • Conducted experimental tests to measure emission current, emission density, and beam diameter.
  • Compared simulation results with experimental data for validation.

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Main Results:

  • Achieved a sharply focused beam with a 3.04 mm diameter in the post-anode region.
  • Measured an emission current of 1.12 A and an emission density of 1.15 A/cm², corresponding to a power density of 11.5 kW/cm² at 10 kV acceleration potential.
  • Simulated results were found to be in agreement with experimental findings.

Conclusions:

  • The indirectly heated strip source electron beam gun is simple, inexpensive, and effective, operating without biasing or external fields.
  • The gun demonstrates high power and is suitable for accelerators technology due to its high emission and low emittance parameters.