Published October 29, 2018 | Version v1.0.4
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3D Printable Quadrupole Ion Trap

  • 1. CERN, Australian National University
  • 2. CERN
  • 3. CERN, Austrian Educational Competence Centre Physics, University of Vienna
  • 4. Johannes Gutenberg University, Mainz


These files contain the design for an open source 3D printable quadrupole ion trap which is capable of trapping Lycopodium powder. The quadrupole ion trap operates using a 3 kV 50Hz alternating current power supply and uses an astable multivibrator circuit to illuminate the spores, using the stroboscopic effect to exhibit their movement. The trap can be used in teaching laboratories to enhance students understanding of electric fields. The trap may also be of interest to science centres as a functional model of an anti-matter trap.

Version 1.0.1 has some corrections to the DIY instructions, student worksheet and teacher manual. 

Version 1.0.2 contains a correction to the circuit diagram of the blinking circuit.

Version 1.0.3 .docx files have been converted to .odt format

Version 1.0.4 modifiable .FCStd Files have been included to allow editing of the designs with the open source program FreeCAD. 

Design is also available on Thingiverse.


Quadrupole Ion Trap

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