POLARIZED TARGET UPDATE D. G. Crabb UVA. Refrigerator UVA fridge and JLab Fridge clones Both leaked badly (from the same place) after ~20 years of operation.

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POLARIZED TARGET UPDATE D. G. Crabb UVA

Refrigerator UVA fridge and JLab Fridge clones Both leaked badly (from the same place) after ~20 years of operation New fridge (actually canabalized) put together at UVA. Tested and works like it used to. Similar work at Jlab.

NH 3 from NIST Irradiation (2009)

NH 3 (same material)

NH 3 (2 nd Batch)

NH3 Inventory According to our inventory Fresh 14 NH 3 on hand from Irradiations from 7/09 and 10/09 is about target loads. More exists from previous experiments but may not get to 90%.

NIST Irradiations MOU between NIST and UVA now needed for irradiations. Currently in the hands of NIST lawyers. Then NIST --> UVA lawyers  NIST lawyers  UVA lawyers and so on ! Only a few people can sign on behalf of the University and I’m not one of them! Technical Issues Maybe a change in procedure due to e A  p + 39 Cl (12.6 MeV threshold)