Target Lab. Update Target Lab. Update

Chiranjib Dutta (UKY) Joe Katich (W&M) Xiaohui Zhan (MIT)

Chiranjib Dutta (UKY) Joe Katich (W&M) Xiaohui Zhan (MIT)

Transversity Collaboration Meeting

Friday, May 4th 2007

Works in our target lab. Works in our target lab.

Oven/Support structureOpticsSoftwareThe real tests

Oven / Support structure Oven / Support structure

Installed the new oven earlierInstalled the new heaters and RTDsUNFORTUNATELY, the structure was BROKEN near the bottom of the air flow tubeGOOD NEWS===the oven is still safe and fineThe new structure is being designedWaiting on it !! (within 4-6 weeks)

Many thanks to Al and Susan

OpticsOptics

New 5 to 1 combiners testedFound problems in a few and sent back to the vendorNew 75 meter fibers (qty=10) testedExcept couple of them, all look good !All of them to be installed in the Hall in summerThe Optics line design to be worked on shortlySimulation to be done shortly before that

SoftwareSoftwareCombine 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. The reading rate from counter by lab view can be at 3-4Hz without interrupting the main spin-flip process.

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 statusAll of the software programs will be fully tested after the installation

Real TestsReal Tests

The oven to be testedLaser alignmentNMR/EPR/SPIN FLIP to be testedAll the new related softwares to be tested accordinglyWater field and frequency sweep to be triedNew vertical coil to be tested in the new labBB field mapping at some point (?)

Wolfgang Korsch Jian Ping Chen Jaideep Singh Aidan Kelleher

Ameya Kolarkar

Wolfgang Korsch Jian Ping Chen Jaideep Singh Aidan Kelleher

Ameya Kolarkar

Thanks a ton :::::::Thanks a ton :::::::