One of them sometimes named after Paul consists of a ring electrode and two cap electrodes and is known as the "quadrupole" version.  
The first production of bare uranium without the use of high-energy particle accelerators used instead one of these devices making use of electron beams.  The namesake of one of these devices also lends his name to a widely used vacuum gauge; that one was used in the (*) ATHENA experiment and is named after Penning.  The Cirac-Zoller approximation of the Hamiltonian is applicable if these devices are used in quantum computing.   One of them sometimes named after Paul consists of a ring electrode and two cap electrodes and is known as the "quadrupole" version.  Another one makes use of cyclotron resonance and is often used in conjunction with the Fourier transform in mass spectrometry.  For 10 points, name these devices that are used to store charged particles.
The first production of bare uranium without the use of high-energy particle accelerators used instead one of these devices making use of electron beams.  
{ion trap} [accept early {electron beam ion trap}] (4) [DW]