1. 3 He R&D Plan at Los Alamos Takeyasu Ito Los Alamos National Laboratory EDM Collaboration Meeting May 26, 2006 Oak Ridge, TN

2. R&D tasks Evaporative purification of 4 He Injection of 3 He HV test

3. R&D tasks Evaporative purification of 4 He  LANL Injection of 3 He – ABS test at 45 degree  LANL – Prototyping/testing of 3He injection volume  Duke HV test  Continued in the same test apparatus

4. Schedule

5. Test cryostat

10. Central Detector System Insert

11. Test cryostat

15. Evaporative purifier test — schematic SFHe NMR cell Polarizer cell Permanent magnets 3 He input pump RGA Detailed analysis of evaporative purifier done by D.Haase B 0 =1T B 0 =100gauss

16. Magnetic field generated by 3 He B 0 =1T EDM (P=100%) B 0 =100 gauss

17. Proton NMR FID of glycerin sample B 0 = 100 gauss V = Qn  BA Q = 30 A = 10 cm 2 B proton ~ 10 -7 gauss If we use B 0 =1T, B 3He ~ 10 -10 gauss may be possible. X 3 =10 -8 Sensitivity B 3He ~10 -8 gauss X 3 =10 -6