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Accelerator Seminar today!
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Monday April 4, 2016<br class="">
ERC 401<br class="">
4:15pm<br class="">
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Speaker: Jonathan Wurtele from UC Berkeley
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Title:<b class=""> </b><b class="">Trapping & Probing Antihydrogen Atoms</b>
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Abstract: Precision spectroscopy of antihydrogen is a promising path to sensitive tests of CPT symmetry. The ALPHA Collaboration, in series of experiments at the CERN Antiproton Decelerator, has combined antiprotons and positrons to create antihydrogen atoms
in a magnetic minimum trap. Trapping times of 1000s have been achieved. Over 1000 antihydrogen atoms have been trapped and a series of initial physics studies has been performed. ALPHA has illuminated antihydrogen atoms with microwaves and measured the positron
spin flip frequency to ~0.1%. A very crude direct bound on the antihydrogen acceleration in the Earth’s gravitational field limits the gravitational-to-inertial mass ratio to |M<span style="vertical-align: -1pt;" class="">g</span>/M| <~100. A Fermi acceleration
inspired experimental technique has recently been employed to set a bound on the charge neutrality of antihydrogen to ~< 10<span style="vertical-align: 4pt;" class="">-9
</span>e. The talk will provide an overview of the techniques we used to trap antihydrogen, ALPHA’s physics results and plans for the future. </div>
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