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JLab Target Lab Status

JLab Target Lab Status. JLab Target Lab Status. People : Jie Liu (graduate student, UVa ), half time Zhiwen Zhao ( postdoc , UVa ), part time Supervision: J. P. Chen Help from: Yi Qiang , Jin Huang, Yawei Zhang ... Main activities: Set up working system

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JLab Target Lab Status

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  1. JLab Target Lab Status

  2. JLab Target Lab Status • People: Jie Liu (graduate student, UVa), half time • ZhiwenZhao (postdoc, UVa), part time • Supervision: J. P. Chen • Help from: Yi Qiang, Jin Huang, Yawei Zhang ... • Main activities: • Set up working system • Tests/measurements needed for completed experiments • cell characterization, AFP loss study • tests to collect information to improve systematics • hot spin up/down • diffusion test • analysis: beam depolarization effects, ... • work on new convection cell • work on pulse NMR

  3. JLab Target Lab Status • working system • 3 sets of Helmholtz coils (L/T/V) • Lasers: ~10 Coherent lasers (half are near end of life?) • 3 Comet lasers with fibers (2 near end of life?) • Several sets of optics • optical fibres/ 5-1 combiners • Complete set of EPR system • Two sets of NMR systems (pumping/target chambers) • Oven/heating/temperature monitoring • Mechanical support/motion system • Many non-convection style 3He cells • He3 gas: one 40L bottle at JLab, one 25L at UVa • additional ERP feedback box need to be made • some electronics (pre-amp, fun generator etc) need repair

  4. JLab Target Lab Status • new convection style cell (single pumping chamber) • “Protovec-I” tested at UVa, is at Jlab now. • 3D measurement of the cell, transferring into CAD model, making customized mount and oven bottom piece.

  5. JLab Target Lab Status • pulse NMR • setting up electronics and testing on a transversity cell. • try to observe signals in lock-in amplifier and mixer+oscilloscope

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