Mitglied der Helmholtz-Gemeinschaft October 10, 2014 | Hans Ströher (Forschungszentrum Jülich) NuPECC Meeting Edinburgh Design Study “EDM”

4. Juni 2016 Institut für Kernphysik (IKP) Folie 2 Novel precision storage rings for Electric Dipole Moment searches

4. Juni 2016 Institut für Kernphysik (IKP) Folie 3 CP Violation by EDMs Electric Dipole Moments violate P- and T-invariance Original illustration by: physicsworld.com SpinEDM T Via CPT theorem, T-violation corresponds to CP-violation

4. Juni 2016 Institut für Kernphysik (IKP) Folie 4 Science Case The matter-antimatter asymmetry of the universe: What we should see: What we actually see: equal amount of predominantly matter matter and antimatter almost no antimatter This is one of the big unsolved problems in physics ! Ratio :1 Matter Anti- Matter

4. Juni 2016 Institut für Kernphysik (IKP) Folie 5 Source(s) of EDMs Multiple experimental input is required … … to disentangle the fundamental source(s) of EDMs

4. Juni 2016 Institut für Kernphysik (IKP) Folie 6 Principle of EDM Search Particle spin alignment along momentum (frozen spin) Radial E-field: torque on spin – rotation out of ring plane

4. Juni 2016 Institut für Kernphysik (IKP) Folie 7 Frozen Spin Technique Spin Momentum Left: a polarized charged particle (beam) in a storage ring Right: fixing the horizontal spin along the momentum direction Proton: „all-electric (E) ring“ magic momentum Proton, Deuteron, 3 He: „all-in-one (E-B) ring“ variable momenta

4. Juni 2016 Institut für Kernphysik (IKP) Folie 8 Project impact Physics -Search for new physics -Matter/antimatter puzzle -Complementary to LHC Technology -New storage ring design -Beyond state-of-the-art equipment Society -Capacity development (training, education) -International scientific cooperation -Cooperation with high-tech industry EDM searches are must-do experiments The EDM Storage Ring will be a European flagship project !

4. Juni 2016 Institut für Kernphysik (IKP) Folie 9 Design Study WP1: Consortium Management WP4: Beam Instrumentation WP6: Ring Layout WP5: Beam Polarimetry WP3: Electrostatic Deflectors WP2: Dissemination of results

4. Juni 2016 Institut für Kernphysik (IKP) Folie 10 Design Study WP6: Ring Layout Concept: use of clockwise and counter-clockwise beams (false effects  systematic errors) Proton: „all-electric ring“  one vacuum chamber Proton, deuteron ( 3 He): „E-B ring“  separate beams

4. Juni 2016 Institut für Kernphysik (IKP) Folie 11 Participants 42 months, 2.8 M€ (personnel only) Deliverable: CDR for storage ring