High Temperature Superconducting Solenoid Punch

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High Temperature Superconducting Solenoid Punch
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Our Mission

• Make an actuator using BSSCO 2223 HTS tape from
  American Superconductor

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What is an actuator?
A device that converts between mechanical energy
and other forms
Copper solenoids http//www.magnet-schultz.com/msa
front2.jpg
MEMX High Performance Steerable MicroMirrors
http//www.memx.com/products.htm
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What is a superconductor?

• A material that conducts without resistance
• Impenetrable by external magnetic fields (up to a
  point)
• Two types Type I and Type II
• Examples
• YBCO Yttrium barium copper oxide
• BSSCO 2212, 2223 (Bi,Pb)2Sr2Ca1Cu2Ox,
  (Bi,Pb)2Sr2Ca2Cu3Ox

Permanent magnet levitating over a
superconductor http//helium.ee.tut.fi/supraryhma/
images/korkealla.jpg
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BSSCO 2223Structure
BSSCO 2223 Unit Cell http//www.library.uow.edu.au
/adt-NWU/uploads/approved/adt-NWU20030305.113225/p
ublic/02Whole.pdf
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Our HTS Tape

• American Superconductor
• BSSCO 2223
• 4 mm (W) x 0.21 mm (T)
• Up to 108 A
• Critical temperature (TC) of 110 K

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BSSCO 2223 Processing
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BSSCO 2223 IC vs. H
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Current vs. Bending Diameter
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Actuator Choice

• Persistent actuator?
• Cant make superconducting junction
• Core choice
• Magnetostrictive
• Hard magnet
• Soft magnet

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Coil Radius Setup
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Radius Measurements
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The Apparatus
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Field Calculations
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Force

• Magnetization of Fe 334225 A/m

Force (N, cm)
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Apparatus Fabrication
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Solenoid Assembly
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Assembled Solenoid
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Testing Magnetic Field
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Testing Magnetic Gradient
1 amp, room temperature
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Self-Field Tests
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Self-Field Tests
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Current Tests
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Load Cell Setup
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Force
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Supercool
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Conclusions
Copper solenoid (1.5 x 2.4) outperforms our
actuator (force), even at room temperature
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Energy Density

• Energy density of Supercool solenoid 17400 J/m3
• 7.0 cm outer diameter
• 3.36 J of total energy
• Energy density of 1.5 x 2.4 Cu solenoid 16100
  J/m3

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Further Considerations

• Commercial tape gt 135 A
• Colder temperature
• YBCO 2nd generation tape
• 7 T at 77K

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Acknowledgements

• Professor Chiang
• Professor Vander Sande
• Yin-Lin Xie
• David Bono
• Ken Stone
• Ed Moriarty
• Leslie Bromberg
• 3.082 staff

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References

• YBCO second generation tape http//www.amsuper.co
  m/html/products/library/2g_white_paper_-_march_200
  4.pdf
• Montgomery, D. Bruce. Solenoid Magnet Design The
  Magnetic and Mechanical Aspects of Resistive and
  Superconducting Systems. Wiley-Interscience, New
  York. 1969.
• Magnet-Schultz commercial Cu solenoidhttp//magn
  et-schultz.com/newRTP24X19INT.htm