| Title |
Searching Electric Dipole Moments in Storage Rings - Challenges, Status and Computational Needs |
| Authors |
- A. Lehrach
FZJ, Jülich, Germany
|
| Abstract |
Permanent EDMs (electric dipole moment) of fundamental particles violate both time invariance T and parity P. Assuming the CPT theorem this implies CP violation. The Standard Model predicts non-vanishing EDMs, their magnitudes, however, are expected to be unobservably small with current techniques. Hence, the discovery of a non-zero EDM would be a signal for "new physics". As a first step towards EDM searches of charged particles in storage rings, R&D work at the Cooler Synchrotron COSY is pursued. Subsequently, a first direct EDM measurement of a charged particle will be performed at COSY, and, on a longer time scale, the design and construction of a dedicated storage ring will be carried out. Full spin-tracking simulations of the entire experiment are absolutely crucial to explore the feasibility of the planned storage ring EDM experiments and to investigate systematic limitations. Existing spin tracking programs like COSY Infinity have to be extended to properly simulate spin motion in presence of an EDM. In addition, benchmarking experiments are performed at the Cooler Synchrotron COSY to check and to further improve the simulation tools.
|
| Footnotes & References |
On behalf of the JEDI collaboration |
| Paper |
download THAJI1.PDF [0.419 MB / 4 pages] |
| Slides |
download THAJI1_TALK.PDF [4.777 MB] |
| Conference |
ICAP2015, Shanghai, China |
| Series |
International Computational Accelerator Physics Conference (12th) |
| Proceedings |
Link to full ICAP2015 Proccedings |
| Session |
Electric Dipole Moments |
| Date |
15-Oct-15 08:30–10:00 |
| Main Classification |
G-2 Spin Dynamics |
| Keywords |
simulation, dipole, storage-ring, lattice, experiment |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Kwok C. Ko (SLAC, Menlo Park, CA, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany); Chuanxiang Tang (Tsinghua University, Beijing, China); Heping Yan (SINAP, Shanghai, China) |
| ISBN |
978-3-95450-136-6 |
| Published |
February 2016 |
| Copyright |
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