Speaker
Gunther Wichmann
(ETH Zürich)
Description
The upcoming measurement at the ETH Zurich Slow Positron Beam aiming at 0.5 ppb precision will be presented. The precursor measurement with a continuous positron beam has been upgraded to include a pulsed beam and a time-of-flight detection scheme to correct for the major systematic error of the experiment, the second order Doppler shift. Additionally the experiment newly uses a field free region avoiding Zeeman and Stark effects.
This work is supported by the ETH Zurich under grant ETH-35 14-1 and the Swiss National Science Foundation under the grant number 200020 159754 and 200020 166286.
Primary author
Gunther Wichmann
(ETH Zürich)
Co-authors
Paolo Crivelli
(Eidgenoessische Technische Hochschule Zuerich (CH))
David Cooke
(Eth Zurich)
Michael Heiss
(ETHZ - ETH Zurich)
Andre Rubbia
(Eidgenoessische Technische Hochschule Zuerich (CH))
Dr
Ben Brown
(Physics Department, Marquette University)
Aldo Antognini
(Paul Scherer Institut)
Klaus Kirch
(PSI)
