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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.

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Presentation on theme: "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."— Presentation transcript:

1 POLARIZED TARGET UPDATE D. G. Crabb UVA

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3 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.

4 NH 3 from NIST Irradiation (2009)

5 NH 3 (same material)

6 NH 3 (2 nd Batch)

7 NH3 Inventory According to our inventory Fresh 14 NH 3 on hand from Irradiations from 7/09 and 10/09 is about 10 -12 target loads. More exists from previous experiments but may not get to 90%.

8 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 - + 40 A  p + 39 Cl (12.6 MeV threshold)

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