at Forschungszentrum Jülich EDM activities at Forschungszentrum Jülich A Status Report Hans Ströher|Forschungszentrum Jülich

Technical Design Report Introduction CP EDM pEDM dEDM 3HeEDM JEDI COSY R&D – recent results Deflector RF Wien filter Precursor experiment Polarimeter Simulations Technical Design Report ERC AdG srEDM Politics NuPECC LRP

Jülich Electric Dipole Moment Investigations JEDI Jülich Electric Dipole Moment Investigations actual count: 126 Current spokespersons: Paolo Lenisa (INFN Ferrara), Jörg Pretz (FZJ) Executive Board, PubCom, Bi-annual Collaboration Mtgs. http://collaborations.fz-juelich.de/ikp/jedi/

COSY at Forschungszentrum Jülich JEDI COSY at Forschungszentrum Jülich … the only (operational) test facility for CP EDM

Spin Coherence Time (SCT) Optimization R&D (I) Spin Coherence Time (SCT) Optimization PRL 117, 054801 (2016)

R&D (II) Spin Tune Measurement PRL 115, 094801 (2015)

Active Feedback System R&D (III) Active Feedback System … also used to study driven oscillation of polarization vector by an RF solenoid … Publication in preparation

Data Base Measurements (dC scattering) R&D (IV) Data Base Measurements (dC scattering) Use of dedicated target point (TP3) in COSY, C and CH2 targets and WASA forward detectors; energy scan (170 - 380 MeV) Analysis has started

Deflector Development R&D (V) Deflector Development Fermilab deflector at Jülich; ExB deflector development using ANKE (D2) magnet

Precursor Experiment (I) RF Wien Filter Development Nucl. Instrum. Methods Phys. Res. A 828, 116 (2016)

Precursor Experiment (I) RF Wien Filter Development … will be installed into COSY ring (TP1, PAX) in April-May 2017 and commissioned in 2 beam times in June and September 2017

Precursor Experiment (II) Polarimeter Development Sub-project is well under way …

Simulations (I) Precursor Experiment Use of code COSY INFINITY for spin tracking simulations, e.g.: impact of (randomly Gaussian distributed) quadrupole misalignments

Technical Design Report (I) Deuteron Ring Options Quasi frozen-spin (QFS) concept; Spacial separation of electric and magnetic fields

Politics (I) ERC AdG srEDM ends Sept. 2021

Politics (II) NuPECC Long Range Plan 2017 Draft recommendation: „The community should vigorously pursue a coordinated research and development program for new exciting science opportunities, like, e.g., the design of precision storage rings for EDM searches … We will get support from this community … Finalization of the report by middle of 2017

COSY at Forschungszentrum Jülich Politics (III) COSY at Forschungszentrum Jülich Data base New Polarimeter Installation of RF Wien filter for precursor experiment … now foreseen not run beyond September 2021 Strategy of Forschungszentrum Jülich: no host lab for CP EDM

Technical Design Report Summary CP EDM pEDM dEDM 3HeEDM JEDI COSY R&D – recent results Deflector RF Wien filter Precursor experiment Polarimeter Simulations Technical Design Report ERC AdG srEDM Politics NuPECC LRP COSY as test facility for pEDM R&D (beyond 2021) ERC Design Study (…) International Initiative CP EDM