轻重离子焦面探测器性能的在束检验

IN-BEAM TEST OF THE FOCAL PLANE DETECTOR FOR LIGHT HEAVY IONS

用核反应￣（１９７）Ａｕ（￣（１２）Ｃ，￣（１２）Ｃ），￣（１２）Ｃ（￣（１２）Ｃ，￣（１２）Ｃ）和￣（２７）Ａｌ（￣（１２）Ｃ，Ｘ）的反应产物对探测器的位置、能量和粒子分辨作了在束检验。实验结果为：该探测器的第一位置灵敏探测器的位置分辨好于２ｍｍ；能量损失和剩余能量探测器的能量分辨分别为５．６％和７．１％；总能量的能量分辨为３．７％。￣（１３）Ｃ和￣（１２）Ｃ离子，￣（１１）Ｃ和￣（１２）Ｃ离子可以很好地分开。该探测器的各项指标，已接近国际上同类探测器的水平。

The resolution of position and energy of the detector and the particle identification of the de-tector are tested with the products of ￣(197)Au(￣(12)C,￣(12)C)￣(12)C(￣(12)C,￣(12))and￣(27)Al(￣(12)C,X)reactions.The results of in-beam test are that the position resolution of the first position detector is less than2mm, the resolution of energy loss detector,residual energy detector and total energy are 5.6%,7.1%, and 3.7%,respectively;in the field setting for￣(13)C ground state group,￣(13)C,￣(12)C as well asthe other particles can be distinguished.