GLAST (tokamak)

GLAST
Type Spherical
Major radius 15 cm[1][2]
Minor Radius 9 cm[2]
Magnetic field 0.4 T[2]
Heating 400eV[2]
Plasma current 50 kA[2]
Location Islamabad, Pakistan[2]

GLAST[3] (GLAss Spherical Tokamak),[3] is a small spherical magnetic confinement tokamak fusion reactor installed at the National Tokamak Fusion Program (NTFP) by the Pakistan Atomic Energy Commission (PAEC) in 2008.[4] It is a Magnetic confinement fusion spherical tokamak with an insulating vacuum vessel. The device is primarily used to conduct scientific studies and experiments to identify the mechanism responsible for current generation during start-up phase of the tokamak discharge.[5] The tokamak was developed by the PAEC indigenously, and offers research on control plasmas.[6] Initial plasma in GLAST-II is achieved successfully. Plasma diagnostics including triple Langmuir probe and Optical Emission Spectroscopy systems are developed to measure basic plasma parameters such as electron temperature, electron number density, floating potential and impurity content in the discharge. Triple Langmuir probe is capable to record instantaneous plasma characteristics.[5-8] Plasma current is then enhanced up to 5 kA by applying a small vertical magnetic field that provides additional plasma heating and shaping [9].

Notes

  1. ↑ "Spherical Tokamaks".
  2. 1 2 3 4 5 6 Ahmad, Zahoor; SHR Rizvi. "Parametric Study of Equilibrium and Stability Analysis of HT-6M Tokamak in the Presence of Flow" (google docs). Pakistan Institute of Nuclear Science and Technology (PINSTECH). National Fusion Power Program. Retrieved 6 January 2013.
  3. 1 2 PAEC. "Comparison table of Spherical Tokamaks" (PDF). Tokamak. Retrieved 5 January 2013.
  4. ↑ Griffith, Sabina. "Pakistan launches national fusion program". ITER Organization. ITER Organization. Retrieved 5 January 2013.
  5. ↑ "24th IAEA Fusion Energy Conference -". PAEC. PAEC at IAEA. Retrieved 5 January 2013.
  6. ↑ "Pakistan launches national fusion program". ITER. International Thermonuclear Experimental Reactor. Retrieved 6 January 2013.
 [7]. Qayyum et al., Time-resolved measurement of plasma parameters by means of triple probe, REVIEW OF SCIENTIFIC INSTRUMENTS 84, 123502 (2013)
 [8]. Qayyum et al., Triple-probe Diagnostic Measurements in Plasma of GLAST Spherical Tokamak, J Fusion Energ, 35 (2016) 205-213
 [9].Initial Plasma Formation in the GLAST-II Spherical Tokamak
     S. Hussain, A. Qayyum, Rafaqat Ali, M.A. Naveed, Mehboob Sadiq, R. Khan, Z. Ahmad, S. Ahmad, F. Deeba, Najam us Saqib, A Ali, A. Ahmed, M. Nazir, H. A. Majeed,   S. Batool, M. A. Javed, N. Ahmed, J. Fusion Energ. 35 (2016) 529-537


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