10.3204/DESY-PROC-2011-04/SEMERTZIDIS_YANNIS
Haciomeroglu, Selcuk
Semertzidis, Yannis K.
Proton EDM Simulations Using Fourth-Order Runge-Kutta Integration.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
2011
Physics
en
ConferencePaper
PDF
High intensity, polarized protons can be stored in an all-electric ring to probe the
proton electric dipole moment. The expected sensitivity level is
10**-29 e * cm, better than any planned hadronic EDM experiment
by one to two orders of magnitude. The protons at their magic momentum of
0.7 GeV/c keep their spin vectors aligned with their momentum
vectors in any transverse electric field
for the duration of the storage time. However, not all protons within the acceptance of the ring,
are exactly at the magic momentum. An RF-cavity is used to eliminate the first order effects
responsible for the spread of angles between the spin and momentum vectors.
We have used particle simulations and fourth-order Runge-Kutta integration to
determine the second order effects. The spin coherence time, a measure of the
angle spreads, are found to be adequate for a total storage time of
10**3 s. Further improvements, using sextupole magnets and/or stochastic cooling, could
bring another order of magnitude improvement in the statistical sensitivity.
Proc. of Patras Workshop on Axions, WIMPs and WISPs, 179 - 182; DESY-PROC-2011-04; ISSN 1435-8077