MDPX Status

With the delivery of the magnet, we have begun testing the magnet performance.

January, 2016:

  • PSL group hosted an international graduate student from the University of Greifswald (Germany) to conduct collaborative experiments in October, 2015.
  • PSL group will host aninternational graduate student from the Hanyang University (South Korea) to conduct collaborative experiments in January/February, 2016.
  • The next announcement for collaborative student experiments will be made in late Spring, 2016.
  • Recent results on the formation of imposed, ordered structures in dusty plasmas formed in magnetized plasmas are reported in two papers:
    • E. Thomas, Jr., B. Lynch, U. Konopka, R. L. Merlino, M. Rosenberg,“Observations of imposed ordered structures in a dusty plasma at high magnetic field”,Phys. Plasmas,22, 030701 (2015).
    • E. Thomas Jr, U. Konopka, B. Lynch, S. Adams, S. LeBlanc, R.L. Merlino, and M. Rosenberg,“Quasi-discrete particle motion in an externally imposed, ordered structure in a dusty plasma at high magnetic field”,Phys. Plasmas,22, 113708 (2015).

July, 2015:

  • MDPX device is operating regularly with magnetic fields up to 2.5 T.
  • Magnetic field peak - 3 T (on 5-20-15).
  • Have changed the configuration of electrodes to allow experiments to be performed using either a powered top electrode or a powered bottom electrode.
  • Have performed a variety of experiments on imposed ordered structures, waves, and void formation in strongly magnetized plasmas.
  • Magnet is shut down for 6 to 7 weeks to repair one of the compressors and service the cryocooler.
  • PSL group has submitted abstracts for 7 presentations for the upcoming APS - Division of Plasma Physics meeting. Project PI (Thomas) will give an invited talk.

September, 2014:

  • MDPX device is operating regularly with magnetic fields.
  • Plasma and dusty plasma studies are being carried out up to magnetic fields of 2 Tesla.
  • In late September / early October, expect to begin operations up to 2.5 Tesla.
  • Have begun a preliminary characterization of plasma parameters (at B = 0) using a probes and spectroscopy.
  • Have made observations of plasma filaments - at low pressures and low rf powers.

Progress: April - May, 2014:

  • April, 2014: Install vacuum chamber, begin plasma operations
  • May, 2014: Install probe diagnostics, characterize plasma

Progress: February - April, 2014:

  • February 24-26, 2014: Magnet delivery and install at Auburn University
  • March 24, 2014: Magnet cooling begins
  • April 10, 2014: Magnet coils reach superconducting threshold of 6.4 K.
  • April 11, 2014: Magnet coils reach equilibrium temperatures of between 4.5 and 4.9 K.
  • April 15, 2014: (afternoon) First charging of magnet to 0.5 Tesla field.
  • April 16, 2014: (morning) Charging of magnet to 1.0 Tesla field. Successful discharge.
  • April 16, 2014: (afternoon) Charging of magnet to 2.0 Tesla field. Successful discharge.
  • April 17, 2014: Generation of gradient magnetic field: 0.5 Tesla with gradient of 0.2 T/m

IMG 4722

Photo of temperature sensors: A, B, C1, and D1 are the coil temperatures.

PSL magnetlab team JDE4544

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