中国环流器二号A(HL-2A)超声分子束注入最新结果

HL-2A装置电子回旋共振加热时，氘脉冲超声分子束穿越分界面，等离子体各项重要参数，包括等离子体储能、极向比压、中平面线平均密度、中心密度和温度上升，中子产额急剧增加. 超声分子束注入有可能较常规脉冲送气在台基顶部提供较强的粒子源，被认为是可供ITER替换脉冲送气的加料方法之一. HL-2A装置氢超声分子束注入的平均速度约为1.7km，与溢流(分子流)注入真空的速度测量作了比较. 关键词： 超声分子束注入 托卡马克 飞行时间法 加料

Recent results of SMBI on the HL-2A tokamak with divertor configuration

Supersonic molecular beam injection (SMBI) can penetrate the separatrix of the HL-2A plasma and result in the increase of important plasma parameters, such as the plasma storage energy, the β_p, the line averaged electron density, the central electron density and temperature. During deuterium plasma ECRH and deuterium SMBI, the neutron account rapidly increases along with the electron density and temperature increments. SMBI was considered as an alternate fuelling technique, which may provide a higher particle source at the pedestal top for ITER. A mean velocity for hydrogen SMBI of about 1.7km/s was detected in HL-2A torus and the measured result was compared with that for the effusion in vacuum.