As part of the Storage Ring EDM program we are currently working on the proton EDM experiment.
A Review report for a Storage Ring pEDM Experiment from the successful technical review in December 2009 is available.
A new proposal was submitted in 2008 to the PAC at BNL.
The recommendations from the PA Committee.
We will have a technical review in the fall of 2009.
A detailed plan was presented to the PAC at BNL in March 2007.
The two components of the plan are (1) spin tracking studies of the ring lattice to demonstrate
that strategies for limiting systematic errors are robust and (2) polarimeter proof-of-principle
demonstrations that show that the proposed polarimeter is capable of delivering sensitivities to
polarization rotations as small as 1 urad.
Once again, the PAC expressed their enthusiasm for the physics, read their complete response.
A Letter of Intent was submitted in 2006, including a plan of a new, smaller storage ring, with 10-29 e·cm sensitivity.
The response from the PAC.
The final report concluded that “The PAC is enthusiastic about the ingenious new approach to electric dipole moment searches.” They recommended that the collaboration submit a plan for LDRD funding to pursue feasibility studies.
Two letters were sent to the EPP2010 (Elementary Particle Physics in the 21st Century) committee, which was formed by the National Research Council, charged to "Identify, articulate, and prioritize the scientfic questions and opportunities that define elementary particle physics," and "Recommend a 15-year implementation plan with realistic, ordered priorities to realize these opportunities."
No. 1 is written by Bill Morse and No. 2 by Yannis Semertzidis.
A proposal was submitted to the Program Advisory Committee at Brookhaven National Laboratory for their meeting September 8-10, 2004. A PDF copy of the deuteron proposal is available. This proposal outlined a plan for a ring built and operated at Brookhaven. The main thrust of the proposal was to make the physics case for the search for an EDM using a storage ring, to explain why the deuteron was an excellent choice for such a search, and to demonstrate from the work done by members of the collaboration that the technical aspects of the proposal were well understood. There was much discussion of the systematic errors in the experiment, with the leading error being the cancellation of effects from small vertical electric field components.
While the PAC was "impressed by the presentation and concept of this experiment", they did not approve it out of a concern
that the cost was high relative to the sensitivity achieved.
Read the complete response from the PAC.
The collaboration is actively working on ways to reduce costs and address these concerns.