Double Penning Trap (IMAGE)

Johannes Gutenberg Universitaet Mainz

Double Penning Trap

Caption

Double Penning trap used to measure the magnetic moment of the proton. The double Penning trap is made of gold-plated cylindrical trap electrodes; the individual trap electrodes are isolated from one another using sapphire rings. During measurements the trap is in an ultra-high vacuum. To the right of the image is the outer housing of a detection instrument which allows for the observation of single protons. The entire structure is about 20 centimeters long.

Credit

photo/©: Andreas Moser, JGU

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