作為輻射生物學發展的前沿，微束已經成為當今世界上用來研究低劑量輻射生物效
應的一個強有力手段。單離子微束裝置是一種將離子束斑的直徑限制在微米量級范圍內，并能將預定數目的離子精確注入到細胞中某一指定位置的輻射裝置。結合一套自行開發的控制程序，CAS-LIBB 微束裝置的計算機控制系統可以實施對生物樣品的精確定量和定點輻射。本文首先給出了裝置定量和定點輻射的精度測定結果，該精度完全能夠勝任細胞-亞細胞尺度的精確輻射。接下來詳細探討了控制系統的改進工作，最后對控制系統進行了展望。
關鍵詞：微束；離子；控制系統；實驗精度；技術改進
Abstract: In recent years, there are increasing interests in the use of single-particle microbeams, which can deliver precisely counted single particles with a spatial resolution of a few microns or less, for radiobiological research. With a self-developed computer control program, the computer control system of the CAS-LIBB microbeam can target samples for irradiation with precisely counted single particles and a spatial resolution of a few microns or less. The single-particle detecting efficiency and targeting accuracy are firstly offered. The measurement results have a sufficient resolution for cellular and sub-cellular irradiation. Then the improving of the computer control system is discussed. At last, the prospect of the system is presented.
Keywords: microbeam, particle, control system, experiment precision, technology improving