Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session U06: Precision Measurements in Accelerators
1:30 PM–3:18 PM,
Tuesday, April 18, 2023
Room: MG Salon F - 3rd Floor
Sponsoring Units: GPMFC DPB
Chair: Mei Bai, SLAC - Natl Accelerator Lab
Abstract: U06.00001 : The high Physics sensitivity of the storage ring proton Electric Dipole Moment experiment*
1:30 PM–1:57 PM
Yannis K Semertzidis
Yannis K Semertzidis
I acknowledge the help of the members of the storage ring EDM (srEDM) collaboration, without which this work would not be possible.
Using similar tools to the ones developed for the high precision study of the systematic errors in the muon g-2 experiment, the storage ring EDM (srEDM) collaboration has completed a comprehensive systematic errors study for an experiment sensitive at or better than the 10^-29 e-cm level. The main componenets of the ring lattice include the use of radial electric field for the beam bending, and magnetic fields for alternate gradient focusing. This hybrid design shields the beam from unwanted magnetic fields, while the (potentially serious) vertical dipole electric field systematic error source is canceled by the simultaneous clock-wise and counter-clock-wise beam storage. Implemending a strictly symmetric ring lattice significantly reduces the so-called vertical velocity and geometrical-phase effects, both rising from the inevitable misalignment of the lattice elements at below 0.1mm placement accuracy.
Furthermore, we have developed a number of strategies on how to recognize and eliminate potential systematic error sources by implementing a new method coined as spin-based alignment. Most of the above mentioned techniques are published in Omarov et al., PRD 2022.
The use of the exisiting tunnel at AGS of BNL of 805m circumference would provide an opportunity to save on construction costs, while reducing the required electric field strength to comfortable levels. The effort can reach publication level data in less than ten years from start of construction.
*This work was partially supported by the Institute for Basic Science (IBS-R001-D1).
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