可提高低能离子束的传输效率和束通道的最大传输束流。
The size and position of the cross section of support beam, the opening direction of beam channel.表面处理形式、状态;支撑梁的截面尺寸和位置,槽钢的开口方向。
Four interchangeable outer collimator helmets with beam channel diameters of 4, 8, 14, and 18 mm are available for irradiating different size volumes.有四种可互换的平行盔状平行光管粒子管道可形成不同尺寸的治疗区域,它们的直径分别为4,8,14,18毫米。