Abel, CCAbelAyres, N JN JAyresBan, GGBanBison, GGBisonBodek, KKBodekBondar, VVBondarBouillaud, TTBouillaudBowles, D CD CBowlesCaratsch, G LG LCaratschChanel, E.E.ChanelChen, WWChenChiu, P-JP-JChiuCrawford, CCCrawfordDechenaux, BBDechenauxDoorenbos, C BC BDoorenbosEmmenegger, SSEmmeneggerFerraris-Bouchez, LLFerraris-BouchezFertl, MMFertlFlaux, PPFlauxFratangelo, A.A.FratangeloGoupillière, DDGoupillièreGriffith, W CW CGriffithGrujic, ZZGrujicHöhl, DDHöhlKasprzak, MMKasprzakKirch, KKKirchKletzl, VVKletzlKomposch, S VS VKomposchKoss, P AP AKossKrempel, JJKrempelLauss, BBLaussLefort, TTLefortLejuez, AALejuezLi, RRLiMeier, MMMeierMenu, JJMenuMichielsen, KKMichielsenMullan, PPMullanMullins, AAMullinsNaviliat-Cuncic, OONaviliat-CuncicPais, DDPaisPiegsa, F. M.F. M.PiegsaPignol, GGPignolQuemener, GGQuemenerRawlik, MMRawlikRebreyend, DDRebreyendRienaecker, IIRienaeckerRies, DDRiesRoccia, SSRocciaRozpedzik, DDRozpedzikSchnabel, AASchnabelSchmidt-Wellenburg, PPSchmidt-WellenburgSegarra, E PE PSegarraSeverijns, NNSeverijnsSmith, C AC ASmithSvirina, KKSvirinaTavakoli, RRTavakoliThorne, J.J.ThorneTouati, SSTouatiVankeirsbilck, JJVankeirsbilckVirot, RRVirotVoigt, JJVoigtWursten, EEWurstenYazdandoost, NNYazdandoostZejma, JJZejmaZiehl, NNZiehlZsigmond, GGZsigmond2025-03-242025-03-242025https://boris-portal.unibe.ch/handle/20.500.12422/205773We present a coil system designed to generate a highly uniform magnetic field for the n2EDM experiment at the Paul Scherrer Institute. It consists of a main B 0 coil and a set of auxiliary coils mounted on a cubic structure with a side length of 273 cm , inside a large magnetically shielded room (MSR). We have assembled this system and characterized its performances with a mapping robot. The apparatus is able to generate a 1 μ T vertical field with a relative root mean square deviation σ ( B z ) / B z = 3 × 10 - 5 over the volume of interest, a cylinder of radius 40 cm and height 30 cm . This level of uniformity overcomes the n2EDM requirements, allowing a measurement of the neutron Electric Dipole Moment with a sensitivity better than 1 × 10 - 27 e cm .en500 - Science::530 - Physicsarticle10.48620/864863998989610.1140/epjc/s10052-025-13902-x