Plastic scintillation detectors for precision Time-of-Flight measurements of relativistic heavy ions  

作　　者：林文健 赵建伟 孙保华 何鎏春 林炜平 刘传业 谷畑勇夫 寺嶋知 田怡 王枫 王萌 张广鑫 章学恒 竺礼华 段利敏 胡荣江 刘忠 鲁辰桂 任培培 盛丽娜 孙志宇 王世陶 王涛峰 徐治国 郑勇 

机构地区：[1]School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China [2]Institute of Modern Physics, Chllinese Academy of Sciences, Lanzhouu 730000, China

出　　处：《Chinese Physics C》2017年第6期128-133,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11475014,11235002);National Key Research and Development Program(2016YFA0400500)

摘　　要：Plastic scintillation detectors for Time-of-Flight（TOF） measurements are almost essential for event-byevent identification of relativistic rare isotopes. In this work, a pair of plastic scintillation detectors of dimensions50×50×3^t mm^3and 80×100×3^t mm^3have been set up at the External Target Facility（ETF）, Institute of Modern Physics（IMP）. Their time, energy and position responses are measured with the^（18）O primary beam at 400 Me V/nucleon. After off-line corrections for walk effect and position, the time resolutions of the two detectors are determined to be 27 ps（σ） and 36 ps（σ）, respectively. Both detectors have nearly the same energy resolution of3.1%（σ） and position resolution of about 3.4 mm（σ）. The detectors have been used successfully in nuclear reaction cross section measurements, and will be be employed for upgrading the RIBLL2 beam line at IMP as well as for the high energy branch at HIAF.Plastic scintillation detectors for Time-of-Flight（TOF） measurements are almost essential for event-byevent identification of relativistic rare isotopes. In this work, a pair of plastic scintillation detectors of dimensions50×50×3^t mm^3and 80×100×3^t mm^3have been set up at the External Target Facility（ETF）, Institute of Modern Physics（IMP）. Their time, energy and position responses are measured with the^（18）O primary beam at 400 Me V/nucleon. After off-line corrections for walk effect and position, the time resolutions of the two detectors are determined to be 27 ps（σ） and 36 ps（σ）, respectively. Both detectors have nearly the same energy resolution of3.1%（σ） and position resolution of about 3.4 mm（σ）. The detectors have been used successfully in nuclear reaction cross section measurements, and will be be employed for upgrading the RIBLL2 beam line at IMP as well as for the high energy branch at HIAF.

关 键 词：plastic scintillator TIME-OF-FLIGHT time resolution walk effect correction 

分 类 号：TL812[核科学技术—核技术及应用]