1. Polarized He-3 Target Progress Polarized He-3 Target Progress Chiranjib Dutta (UKY) Joe Katich (W&M) Xiaohui Zhan (MIT) Yi Qiang (DUKE) HALL A Collaboration Meeting Thursday, June 21 st 2007

2. OUTLINE (Work in our target lab.) Oven/Support structure Oven Test Laser Update Other related stuff Optics Software The real tests

3. Oven / Support structure Installed the new oven earlier. Installed the new heaters and RTDs UNFORTUNATELY, the structure was BROKEN near the bottom of the air flow tube GOOD NEWS===the oven is still safe and fine The new structure is being designed Waiting on it !!( supposed to be delivered now) Many thanks to Al and Susan

4. Few snaps :::: The GEn Tube The new oven Earlier broken portion

5. Oven Test Currently the old GEn air inlet and outlet pipe is being used The GEn air flow system installed Trying to heated up the oven. Successfully heat up to 240 deg. C More tests to be carried out next week to optimize

6. Laser Update 6 single FAP and 2 Duo FAP All tested and recalibrated One needs to be repaired and will be sent shortly GOOD NEWS :::: COHERENT decided to resume production

7. Other Aspects New pick up coils/stands ready Vertical coil support design completed and delivered Moving fixture design completed and delivered BB Field clamp design completed and ordered Exit beam line design mostly completed 6 hybrid cells already produced and on track with one in every couple of weeks

8. Optics New 5 to 1 combiners tested (qty=3) New 75 meter fibers (qty=10) tested ALL LOOK GOOD All of them to be installed in the Hall in summer The Optics line design to be worked on shortly 3 optics line:: Longitudinal,Transverse,Vertical Simulation is being done for the optics lines

9. Software Combine the spin-flip lab view code with NMR signal analysis and EPR measurement. 1. NMR frequency sweep signal can be extracted and fitted after every spin-flip. Provide quick & continuous cell polarization monitoring. 2. EPR measurement can be controlled automatically by spin-flip program during every spin-flip, also can be controlled manually without affecting the main program. 3. Add counter connected to FG to monitor the frequency sweep process which is crucial to spin-flip. Spin polarization status(+/-) can be monitored continuously by a TTL output signal of the FG together with ADC and scalar. The record of Labview can communicate with EPICS as a complementary method to check the spin status. All of the software programs will be fully tested after the installation.

10. Real Tests on list in next 3 months The oven is being tested Laser alignment NMR/EPR/SPIN FLIP to be tested All the new related softwares to be tested accordingly Water field and frequency sweep to be tried New vertical coil to be tested in the new lab BB field mapping with the new shielding before moved to HALL C

11. With 1. All instruments we need 2. All softwares ready 3. Oven working good 4. 3 students and 1 post doc working 5. All experts/experienced people around We will definitely be able to meet the deadline already set before and WE WILL BE READY by January 1st 2008 for installation Towards all four He-3 Experiments starting with TRANSVERSITY

12. Wolfgang Korsch Jian Ping Chen Todd Averett Jaideep Singh Aidan Kelleher Ameya Kolarkar Acknowledgement :::::::