一种用于RIBLL2的纵向场多次取样型电离室

唐述文; 段利敏; 孙志宇; 马朋; 鲁辰桂; 杨贺润; 张金霞; 胡正国; 徐瑚珊

doi:10.11804/NuclPhysRev.29.01.072

一种用于RIBLL2的纵向场多次取样型电离室

中国科学院近代物理研究所, 甘肃兰州 730000;
中国科学院研究生院, 北京 100049

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出版历程
- 收稿日期: 1899-12-31
- 修回日期: 1899-12-31
- 刊出日期: 2012-03-19

A Longitudinal Field Multiple Sampling Ionization Chamber for RIBLL2

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

摘要

摘要: 为兰州第二条放射性束流线（RIBLL2）研制了一台用于ΔE测量的纵向场多次取样型电离室。利用3组分α源（²³⁹Pu为3.435 MeV， ²⁴¹Am为3.913 MeV， ²⁴⁴Cm为4.356 MeV）对取样单元进行了测试，确定了电离室的最佳工作电压为－500 V，沉积能量为3.435 MeV时，取样单元的能量分辨为271.4 keV(FWHM)。利用Geant4对此电离室的整体性能进行了模拟，表明可以对Z≥4的离子实现较好的粒子鉴别。 A longitudinal field MUltiple Sampling Ionization Chamber (MUSIC)， which makes multiple measurements of energy loss for very high energy heavy ions at RIBLL2， has been constructed and tested with 3 constituent α source （²³⁹Pu: 3.435 MeV， ²⁴¹Am: 3.913 MeV， ²⁴⁴Cm: 4.356 MeV）. The voltage plateau curve has been plotted and －500 V is determined as a proper work voltage. The energy resolution is 271.4 keV FWHM for the sampling unit when 3.435 MeV energy deposited. A Geant4 Monte Carlo simulation is made and it indicates the detector can provide unique particle identification for ions Z≥4.
- 电离室 /
- 能量分辨 /
- 粒子鉴别 /
- 模拟
Abstract: A longitudinal field MUltiple Sampling Ionization Chamber (MUSIC)， which makes multiple measurements of energy loss for very high energy heavy ions at RIBLL2， has been constructed and tested with 3 constituent α source （²³⁹Pu: 3.435 MeV， ²⁴¹Am: 3.913 MeV， ²⁴⁴Cm: 4.356 MeV）. The voltage plateau curve has been plotted and －500 V is determined as a proper work voltage. The energy resolution is 271.4 keV FWHM for the sampling unit when 3.435 MeV energy deposited. A Geant4 Monte Carlo simulation is made and it indicates the detector can provide unique particle identification for ions Z≥4.
- ionization chamber /
- energy resolution /
- particle identification /
- simulation

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文章访问数: 2223
HTML全文浏览量: 101
PDF下载量: 520
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一种用于RIBLL2的纵向场多次取样型电离室

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出版历程

A Longitudinal Field Multiple Sampling Ionization Chamber for RIBLL2

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出版历程

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