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@ARTICLE{Christian:906172,
author = {Christian, Carli and Paolo, Lenisa and Pretz, Jörg and
Rathmann, Frank and Stroeher, Hans},
title = {{CPEDM}: {A} {S}torage {R}ing {F}acility for
{C}harged-{P}article {EDM} {S}earches},
journal = {Nuclear physics news},
volume = {31},
number = {2},
issn = {1050-6896},
address = {London [u.a.]},
publisher = {Taylor $\&$ Francis},
reportid = {FZJ-2022-01272},
pages = {27 - 29},
year = {2021},
abstract = {The proposed method exploits charged particles confined as
a storage ringbeam (proton, deuteron, possibly3He) to search
for an intrinsic electric dipolemoment (EDM) aligned along
the particle spin axis. Statistical sensitivitiescould
approach 10−29ecm. The challenge will be to reduce
systematic errorsto similar levels. The ring will be
adjusted to preserve the spin polarization, ini-tially
parallel to the particle velocity, for times in excess of 15
min. Large radialelectric fields, acting through the EDM,
will rotate the polarization from thelongitudinal to the
vertical direction. The slow increase in the vertical
polar-ization component, detected through scattering from a
target, signals the EDM.The project strategy is outlined. A
stepwise plan is foreseen, starting with on-going COSY
activities that demonstrate technical feasibility.
Achievements todate include reduced polarization measurement
errors, long horizontal planepolarization lifetimes, and
control of the polarization direction through feed-back from
scattering measurements. The project continues with a
proof-of-capability measurement (precursor experiment; first
direct deuteron EDMmeasurement), an intermediate prototype
ring (proof-of-principle; demon-strator for key
technologies), and finally a high-precision electric-field
storagering.},
cin = {IKP-2},
ddc = {530},
cid = {I:(DE-Juel1)IKP-2-20111104},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / srEDM -
Search for electric dipole moments using storage rings
(694340)},
pid = {G:(DE-HGF)POF4-612 / G:(EU-Grant)694340},
typ = {PUB:(DE-HGF)16},
doi = {10.1080/10619127.2021.1915027},
url = {https://juser.fz-juelich.de/record/906172},
}