【摘要】 报道一套轻重离子焦面探测器系统。该探测器系统是以四个矩形正比管和一个电离室堆积而成。工作气体为70％Ar+30％CH₄。桌上试验结果为,位置灵敏探测器分辨约0.95mm,积分非线性好于0.2％。在北京HI-13串列加速器上,以66MeV¹²C束流、工作气压0.33×10⁵Pa,测得位置分辨为1.3mm;测量出能量损失ΔE,剩余能量E_r和总能量E的分辨率分别为5.6％,7.1％和3.7％。利用²⁷Al(¹²C,X)反应,进行粒子鉴别研究,结果表明,¹³C和¹²C能被完全分开。更多还原

【Abstract】 A light-heavy ion focal plane detector system (500 mm in length) has been developed for the Beijing Q3D magnetic spectrometer. It has passed in-beam test and is already in use in nuclear physical experiments. The telescope of this detector system consists of 4 rectangular proportional counters and an ionization chamber. The working gas is 70%Ar + 30%CH4. The desk experiment shows that the intrinsic resolution of the position-sensitive detector is about 0. 95 mm and the integrated nonlinearity is better than 0. 2%. The HI-13 tandem accelerator of China Institute of Atomic Energy experiment shows while under the pressure of 0. 33X 105 Pa with 66 MeV 12C beam, the intrinsic position resolution has been measured to be about 1. 3 mm,and the energy resolutions for the energy loss AE ,the residual energy ET and the total energy E have been measured to be 5. 6%, 7.1% and 3.7%, respectively. 27A1 (12C, X) reaction is used to study particle identification and it is found that 13C and 12C can be separated completely.更多还原