002883821 001__ 2883821
002883821 003__ SzGeCERN
002883821 005__ 20231214205416.0
002883821 0247_ $$2DOI$$9JACOW$$a10.18429/JACoW-IPAC2023-WEPL027
002883821 0248_ $$aoai:cds.cern.ch:2883821$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002883821 035__ $$9https://inspirehep.net/api/oai2d$$aoai:inspirehep.net:2716686$$d2023-12-12T09:21:19Z$$h2023-12-13T05:31:31Z$$mmarcxml
002883821 035__ $$9Inspire$$a2716686
002883821 041__ $$aeng
002883821 100__ $$aCarli, C$$uCERN
002883821 245__ $$9JACOW$$aLimitations of radial magnetic field estimates from counter-rotating beams in an electro-static EDM ring
002883821 260__ $$c2023
002883821 300__ $$a4 p
002883821 520__ $$9JACOW$$aProposals to measure a possible Electric Dipole Moment (EDM) of protons in an electro-static machine are studied by a world-wide community. The machine is operated at the so-called magic energy to satisfy the "frozen spin" condition such that, without imperfections and the well-known magnetic moment of the particle, the spin is always oriented parallel or antiparallel to the direction of movement. The effect of a finite EDM is a build-up of a vertical spin component. A small average radial magnetic field leads as well to a build-up of a vertical spin component, which cannot be disentangled from the effect due to a finite EDM, and thus generates a systematic error of the measurement. Essential ingredients of the concept are to install the machine inside a state-of-the-art magnetic shielding and to measure the vertical orbit separation of two counter-rotating beams, enhanced by choosing a very low vertical tune, with high precision pick-ups. In this paper, we analyse limitations of this method and, in particular, the impact of wanted ("strong focusing" lattice) and unwanted variations of the betatron functions and of coupling.
002883821 540__ $$aCC-BY-4.0$$bJACOW$$uhttps://creativecommons.org/licenses/by/4.0
002883821 65017 $$2SzGeCERN$$aAccelerators and Storage Rings
002883821 6531_ $$9author$$afocusing
002883821 6531_ $$9author$$alattice
002883821 6531_ $$9author$$abetatron
002883821 6531_ $$9author$$aproton
002883821 6531_ $$9author$$adipole
002883821 690C_ $$aARTICLE
002883821 690C_ $$aCERN
002883821 700__ $$aCilento, V$$uCERN
002883821 773__ $$cWEPL027$$pJACoW IPAC$$qIPAC2023$$v2023$$wC23-05-07$$y2023
002883821 8564_ $$82499678$$s485231$$uhttp://cds.cern.ch/record/2883821/files/document.pdf$$yFulltext
002883821 960__ $$a13
002883821 962__ $$b2858945$$kWEPL027$$nvenice20230507
002883821 980__ $$aARTICLE
002883821 980__ $$aConferencePaper