Author/Authors :
Hu، نويسنده , , J.S. and Wang، نويسنده , , X.M. and Li، نويسنده , , J.H. and Wu، نويسنده , , J.H. and Chen، نويسنده , , Y. and Wang، نويسنده , , H.Y. and Yang، نويسنده , , D.W. and Luo، نويسنده , , N.C. and Li، نويسنده , , Doris S.F. and Li، نويسنده , , G.Y. and Wang، نويسنده , , L. and Yu، نويسنده , , Y.W. and Dou، نويسنده , , R.C. and Hu، نويسنده , , Q.S. and L.M.Bao and Zhao، نويسنده , , Y.P. and Li، نويسنده , , J.G.، نويسنده ,
Abstract :
EAST is a non-circular advanced steady-state experimental device and the first entirely superconducting tokamak in the world. Vacuum system is one of the most important sub-systems of EAST device. Wall conditionings, such as baking, discharge cleaning and boronization, also play a very important role for the plasma operation. Due to Ion Cyclotron Resonance Frequency (ICRF) wall conditioning technique could be carried out in the presence of a high toroidal magnetic field, it is routinely used for wall cleanings on EAST. After the 2nd campaign in 2007, the plasma facing walls was modified to full carbon walls and vacuum system was upgraded to meet the requirement of particles exhaust. This paper will introduce the new statues of vacuum system, such as pumping, fueling and wall conditionings on EAST. Then the vacuum operation and wall conditioning in the 2008 campaign is introduced.
