1. Elena Long Joint Hall A/C Collaboration Meeting Jefferson Lab June 6 th, 2014 1 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

2. Today’s Discussion ◦ Overview of Physics Motivation ◦ Letter of Intent Measurement ◦ Challenges ◦ Opportunities ◦ Summary 2 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

3. Physics Overview 3 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

4. Tensor Polarization For tensor polarization, need spin-1 particles 4 m = +½ m = -½ Spin-½ System m = -1 m = +1 m = 0 Spin-1 System Tensor polarization fills the m = 0 state Animations by S.C. Pieper, et al, http://www.phy.anl.gov/theory/movie-run.htmlhttp://www.phy.anl.gov/theory/movie-run.html 06/06/2014Joint Hall A/C Collaboration MeetingElena Long J. Forest, et al, Phys. Rev. C 54, 646 (1996)

5. 5 0 for unpolarized beam 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

6. Deuteron Wave Function 6 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

7. Connection to Short Range Correlations Short range correlations caused by tensor force – why not probe it through tensor polarization? 7 N. Fomin et al., Phys. Rev. Lett. 108 (2012) 092505L.L. Frankfurt et al., Int. J. Mod. Phys. A23 (2008) 2991-3055 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

8. Frankfurt and Strikman Light Cone Calculations 8 L.L. Frankfurt, M.I. Strikman, Phys. Rept. 76 (1981) 215 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

9. Sargsian Light Cone and Virtual Nucleon Calculations 9 M. Sargsian, Private Communication 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

10. Interest from Theorists 06/06/2014Joint Hall A/C Collaboration Meeting Elena Long 10

11. 11 Spokespeople: E. Long, K. Slifer, P. Solvignon University of New Hampshire D. Higinbotham Jefferson Lab D. Day, D. Keller University of Virginia 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

12. Rates for D(e,e’)X 12 E. Long, Technical Note, JLAB-TN-13-029 06/06/2014Joint Hall A/C Collaboration MeetingElena Long P.E. Bosted, V. Mamyan, arXiv:1203.2262 M. Sargsian, Private Communication N. Fomin, et al., Phys. Rev. Lett. 108 (2012) 092502 N. Fomin, et al., Phys. Rev. Lett. 105 (2010) 212502

13. Dilution Factor 13 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

14. Experimental Set-Up 14 SHMS Polarized Target HMS Slow Raster Fast Raster Lumi Faraday Cup Unpolarized Beam SHMS 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

15. DNP Target 15 Figure courtesy of C. Keith 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

16. Target Development in Progress ◦UVa Target Lab has successfully polarized deuterated butanol in April 16 Courtesy of D. Keller 06/06/2014Joint Hall A/C Collaboration MeetingElena Long ◦UNH Target Lab is ramping up, first cool-down in January, successfully reached 7T

17. Experimental Details 17 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

18. Kinematics 18 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

19. Systematics Estimate 19 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

20. 20 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

21. Challenges 21 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

22. Opportunities 22 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

23. 23 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

24. Thank you 24 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

25. 25 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

26. Backup Slides 26 06/06/2014Joint Hall A/C Collaboration MeetingElena Long

27. Light Cone Kinematics 27 03/11/2014Tensor Spin Observables Workshop Elena Long

28. Lower Tensor Polarization Pzz = 30% 28 03/11/2014Tensor Spin Observables Workshop Elena Long

29. Lower Tensor Polarization Pzz = 25% 29 03/11/2014Tensor Spin Observables Workshop Elena Long

30. Lower Tensor Polarization Pzz = 20% 30 03/11/2014Tensor Spin Observables Workshop Elena Long

31. UNH Magnetic Field Map 31 03/11/2014Tensor Spin Observables Workshop Elena Long

32. UNH Magnetic Field Map 32 03/11/2014Tensor Spin Observables Workshop Elena Long

33. UNH Magnetic Field Map 33 03/11/2014Tensor Spin Observables Workshop Elena Long

34. Tensor Polarization Optimization 34 UVA: 30% at 5.0T Born: 20% at 2.5T

35. Tensor Polarization Measurement Vector optimize with microwaves Fit peaks with convolution Tensor optimize with RF Measure change in peaks using Riemann Sum segments 35 Ratio of instantaneous to initial NMR signal area Percentage of initial peak shifted any time (from reduced side) Available tensor enhancement

36. Brute Force Tensor Polarization When vector polarizing deuterium, some amount of tensor polarization occurs Higher vector polarization  Higher tensor polarization

37. Cross Section Calculations - Deuterium 37 03/11/2014Tensor Spin Observables Workshop Elena Long N. Fomin, et al., Phys. Rev. Lett. 108 (2012) 092502 N. Fomin, et al., Phys. Rev. Lett. 105 (2010) 212502

38. Cross Section Calculations - Carbon N. Fomin, et al., Phys. Rev. Lett. 108 (2012) 092502 N. Fomin, et al., Phys. Rev. Lett. 105 (2010) 212502

39. Cross Section Calculations - Deuterium 39 03/11/2014Tensor Spin Observables Workshop Elena Long W.P. Shutz, et al., Phys. Rev. Lett. 38, 259 (1977)