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A modified Bitter-type electromagnet and control system for cold atom experiments.

Tian Luan1, Tianwei Zhou1, Xuzong Chen1

  • 1School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, People's Republic of China.

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Summary
This summary is machine-generated.

We developed an improved Bitter-type electromagnet offering high magnetic fields and efficient cooling. This electromagnet achieves stable currents and precise magnetic field generation for various applications.

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Area of Science:

  • Physics
  • Engineering
  • Materials Science

Background:

  • Electromagnets are crucial for generating magnetic fields in scientific research and technological applications.
  • Traditional electromagnets often face challenges with heat dissipation and current stability, limiting their performance.
  • Bitter-type electromagnets offer a design advantage for high magnetic field generation.

Purpose of the Study:

  • To present a modified Bitter-type electromagnet with enhanced magnetic field strength, electronic properties, and thermal management.
  • To detail the construction and cooling system of the novel electromagnet design.
  • To evaluate the performance of the electromagnet in generating magnetic and gradient fields.

Main Methods:

  • Constructed a Bitter-type electromagnet using stacked copper and mica layers with integrated cooling channels and parallel ducts.
  • Implemented a continuous current control system with feedback for precise current regulation.
  • Measured the generated magnetic field and gradient field at specified distances with varying currents.
  • Assessed current stability under operational conditions with a controlled cooling water flow rate.

Main Results:

  • Achieved a peak magnetic field of 1000 G and a peak gradient field of 80 G/cm.
  • Demonstrated efficient heat removal through a distinctive cooling channel design.
  • Attained current stability of 10(-5) with a cooling water flow of 3.8 l/min.
  • Successfully regulated current using a continuous current control system.

Conclusions:

  • The modified Bitter-type electromagnet provides high magnetic field and gradient field capabilities.
  • The integrated cooling system ensures efficient heat dissipation, crucial for high-power operation.
  • The precise current control system guarantees excellent stability, making the electromagnet suitable for sensitive applications.