Magnetics Business & Technology - Spring 2018 - 11

FEATURE ARTICLE

Measurement comparable with extremely precise magnetic resonance imaging.
The Mainz-based physicists achieved the greater precision by
making improvements to their technical setup. One innovation
was an increase of the homogeneity of the magnetic field even
further in the Penning trap, in which the high-precision measurements were carried out. Another was the introduction of a
self-shielded coil to reduce external fluctuations. Both measures
helped increase the stability of the particle in the trap, allowing
the frequencies to be measured with far greater accuracy.
"In order to measure the magnetic moment of
the proton, we developed one of the most sensitive Penning trap apparatuses ever created,"
explained Georg Schneider of the Institute of
Physics of Mainz University, the first author of
the Science publicatio "The proton represents a
unique challenge as it has such a small magnetic
moment. Thus we needed our analysis trap to
have an almost inconceivable degree of sensitiv-

Johannes Gutenberg University Mainz, Germany
ity. Basically, you could say that what we have
undertaken is extremely precise MRI of an individual proton."
Another improvement was the shortening of the
time period until a data point, i.e., a single measurement, was possible. This time per data point
was halved from three hours to 90 minutes. n the
future, the researchers plan to employ sympathetic laser cooling to reduce the energy of the
proton in order to generate greater sensitivity and
thus further increase the data collection rates.
"The data rate is currently the limiting factor."

force of protons and antiprotons even more precisely and either
confirm the current model of particle physics or discover a difference, which would open the gate for completely new concepts
in physics.

To Build Your Machinery
Some Assemblies Required

Magnet Applications® has been supplying industries like yours
with magnetics and magnetic sub-assemblies for over 50 years.
Our expertise incorporates precision design, exceptional
engineering and supplying complete sub-assemblies from our
own facility - in any quantity. With facilities in North America and
Europe, we can offer sales and service around the world with
Total Magnetic Solutions™ that are, well, out of this world.

* Engineering Design & Analysis Services
* 3-D Modeling
* Sensor Class Magnetics
* Indexing Features for Alignment & Orientation

MADE IN

The physicists at Mainz University continue to
work closely with their colleagues from the BASE
collaboration at the CERN research center near
Geneva in Switzerland. Positive developments
made in Mainz will be shared with CERN and
vice versa.
The scientists hope to determine the magnetic

www.MagneticsMag.com

Only North American Manufacturer
of Compression Bonded Magnets

ITAR-Registered

(800) 437-8890
eMail: Sales@MagnetUS.com
magnetapplications.com

Spring 2018 * Magnetics Business & Technology

http://www.magnetapplications.com http://www.MagneticsMag.com

Table of Contents for the Digital Edition of Magnetics Business & Technology - Spring 2018