针对CBM-TOF(Compression Baryon Material experiment-Time of flight detector)探测器采用的无触发数据获取系统所产生的数据流,本文提出一套完整的数据压缩算法,该算法通过提取数据流中与粒子信息相关的数据,并将数据配对成脉冲信号...针对CBM-TOF(Compression Baryon Material experiment-Time of flight detector)探测器采用的无触发数据获取系统所产生的数据流,本文提出一套完整的数据压缩算法,该算法通过提取数据流中与粒子信息相关的数据,并将数据配对成脉冲信号做进一步的数据筛选来完成。算法通过三个步骤完成对数据的压缩处理,分别是有效性验证、排序及脉宽筛选。有效性验证将初步筛选数据,保留粒子到来的时刻信息(绝对时间/相对时间),再通过后面两个步骤将符合行为的脉冲提取出来。通过压缩来自COSY的束流测试的数据,算法的正确性和有效性得到了验证,数据的压缩率达到94.5%以上,并且完整地保留了有用的数据信息。本算法减轻了无触发数据获取系统链路上数据流的压力,高效快速地将原始数据中有价值的信息提取出来,基本完成了针对CBM-TOF数据预处理的工作要求,对TOF探测器的数据重组有重要的意义。展开更多
In order to improve the power of isobaric identification in the accelerator mass spectrometry, an improved gas detector called gas-filled time-of-flight (GF-TOF) spectrometric detectortern were descrient ion energy,ha...In order to improve the power of isobaric identification in the accelerator mass spectrometry, an improved gas detector called gas-filled time-of-flight (GF-TOF) spectrometric detectortern were descrient ion energy,has been designed and set up again. The experimental tests of the new system were described. ^36GS and ^36Cl were identified by GF-TOF and ΔE-E method with different ion energy, respectively.展开更多
The accelerator mass spectrometry system(AMS) in China Institute of Atomic Energy(CIAE) has been improved especially for the ion source, some new measurement methods including 41Ca measurement, PX-AMS method and GF-TO...The accelerator mass spectrometry system(AMS) in China Institute of Atomic Energy(CIAE) has been improved especially for the ion source, some new measurement methods including 41Ca measurement, PX-AMS method and GF-TOF detector are developed, the applications of the AMS system including nuclear physics science, environmental science, geoscience, life science and materials science have been carried out, a brief describe of all these work is discussed in this paper.展开更多
等时性模式奇异核的质量测量(Isochronous Mass Measurement)是兰州重离子冷却储存环(HIRFL-CSR)上的物理研究项目之一。离子在CSRe中回旋时,每次穿过飞行时间探测器产生的信号经放大后由数字示波器DPO 71254采集。基于LabView和TekVIS...等时性模式奇异核的质量测量(Isochronous Mass Measurement)是兰州重离子冷却储存环(HIRFL-CSR)上的物理研究项目之一。离子在CSRe中回旋时,每次穿过飞行时间探测器产生的信号经放大后由数字示波器DPO 71254采集。基于LabView和TekVISA的获取程序被开发出来用于自动存储示波器采集的数据、显示时域波形及在线分析得到离子飞行时间的频谱。主要介绍了CSRe上等时性模式奇异核质量测量的方法、数据获取系统及测量结果。展开更多
文摘针对CBM-TOF(Compression Baryon Material experiment-Time of flight detector)探测器采用的无触发数据获取系统所产生的数据流,本文提出一套完整的数据压缩算法,该算法通过提取数据流中与粒子信息相关的数据,并将数据配对成脉冲信号做进一步的数据筛选来完成。算法通过三个步骤完成对数据的压缩处理,分别是有效性验证、排序及脉宽筛选。有效性验证将初步筛选数据,保留粒子到来的时刻信息(绝对时间/相对时间),再通过后面两个步骤将符合行为的脉冲提取出来。通过压缩来自COSY的束流测试的数据,算法的正确性和有效性得到了验证,数据的压缩率达到94.5%以上,并且完整地保留了有用的数据信息。本算法减轻了无触发数据获取系统链路上数据流的压力,高效快速地将原始数据中有价值的信息提取出来,基本完成了针对CBM-TOF数据预处理的工作要求,对TOF探测器的数据重组有重要的意义。
文摘In order to improve the power of isobaric identification in the accelerator mass spectrometry, an improved gas detector called gas-filled time-of-flight (GF-TOF) spectrometric detectortern were descrient ion energy,has been designed and set up again. The experimental tests of the new system were described. ^36GS and ^36Cl were identified by GF-TOF and ΔE-E method with different ion energy, respectively.
文摘The accelerator mass spectrometry system(AMS) in China Institute of Atomic Energy(CIAE) has been improved especially for the ion source, some new measurement methods including 41Ca measurement, PX-AMS method and GF-TOF detector are developed, the applications of the AMS system including nuclear physics science, environmental science, geoscience, life science and materials science have been carried out, a brief describe of all these work is discussed in this paper.
文摘等时性模式奇异核的质量测量(Isochronous Mass Measurement)是兰州重离子冷却储存环(HIRFL-CSR)上的物理研究项目之一。离子在CSRe中回旋时,每次穿过飞行时间探测器产生的信号经放大后由数字示波器DPO 71254采集。基于LabView和TekVISA的获取程序被开发出来用于自动存储示波器采集的数据、显示时域波形及在线分析得到离子飞行时间的频谱。主要介绍了CSRe上等时性模式奇异核质量测量的方法、数据获取系统及测量结果。
