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  • Jefferson Lab Weekly Briefs
    April 29, 2015

  • Jefferson Lab Weekly Briefs
    April 22, 2015

  • Jefferson Lab Weekly Briefs
    April 1, 2015

  • Jefferson Lab Weekly Briefs
    April 15, 2015

    Physics
    Jefferson Lab Published Journal Articles April 6-10

    • Zhong-Bo Kang, Alexei Prokudin, Peng Sun, and Feng Yuan. "Nucleon tensor charge from Collins azimuthal asymmetry measurements." Phys. Rev. D 91 071501(R) (2015).

    Remember to submit your papers for approval to the Jefferson Lab Publications database.

  • Jefferson Lab Weekly Briefs
    November 5, 2015

    12 GeV Upgrade
    The conventional facilities scope for the 12 GeV CEBAF Upgrade is complete. Commissioning of the tunnel air conditioning was performed the week of Oct. 12. During commissioning, a control programming issue with the chilled water temperature in relationship to the dew point was identified. The controls subcontractor has corrected the controls programming and the system is working as designed.

  • Jefferson Lab Weekly Briefs
    July 15, 2015

    12 GeV Upgrade
    Work on the tunnel air conditioning systems is progressing well. A team of insulators have been working inside the tunnel while controls and electrical work is occurring above the ground. Over at the Central Helium Liquefier cold box, fit-up and welding of components is on-track. In the experimental halls, there are several activities in progress, including cryogenics and electrical connections for the Torus magnet in Hall B as well as low-current testing of the Horizontal Bend magnet in Hall C.

  • Jefferson Lab Weekly Briefs
    July 1, 2015

    12 GeV Upgrade
    One of the last civil construction tasks for the 12 GeV CEBAF Upgrade is the accelerator tunnel air conditioning. Under this contract, installation of the chilled water piping in the tunnel is now complete. Pressure testing of piping segments has begun. With successful pressure tests, the chilled water piping is insulated. Installation of fire sprinkler pipe in the tunnel arcs continues.

  • Jefferson Lab Weekly Briefs
    December 10, 2015

    12 GeV Upgrade
    Late last month, the new spectrometer in Hall C was rotated to its maximum angle relative to the electron beam for the first time. This is a triumph for those who designed, surveyed and installed the Super High Momentum Spectrometer, since it must come very close to the curved wall of Hall C. After Jefferson Lab staff removed or relocated a final few items from the wall, the SHMS was rotated to a scattering angle of 40.2 degrees. The design specification calls for reaching at least 40 degrees.

  • Jefferson Lab Weekly Briefs
    November 25, 2015

    Physics
    Jefferson Lab Published Journal Articles, Nov. 16-20

    • H. S. Jo et al. (CLAS Collaboration). "Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions." Phys. Rev. Lett. 115, 212003.

    Remember to submit your papers for approval to the Jefferson Lab Publications database.

  • Jefferson Lab Weekly Briefs
    November 18, 2015

    12 GeV Upgrade
    12 GeV Project installation work in Hall B is increasing in many areas. In addition to welding on the Torus magnet, electrical and electronic work on the power supplies and racks has ramped up. Hall C continues testing and measurements of the Horizontal Bend magnet and power supply, along with preparations for the arrival of additional superconducting magnets in 2016.

    Physics
    Jefferson Lab Published Journal Articles, Nov. 2-6