3D track reconstruction of MeV electrons using the silicon detector -towards high-sensitivity gamma camera-

使用硅探测器对 MeV 电子进行 3D 轨迹重建 - 面向高灵敏度伽玛相机 -

• 批准号: 24654065
• 负责人: ICHIKAWA Atsuko
• 金额: $ 2.41万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24654065/
• 关键词: 粒子測定技術; ガンマ線カメラ; シリコンマイクロストリップ検出器

For the application as the gamma-ray camera, we have tried the reconstruction of track angle for electrons having a few MeV energy by using the silicon micro-strip detector.A simulation study showed that the angle information of 5 MeV electron can be obtained from the multiplicity of the hits by using a 25 micro-meter strip-pitch detector.We have produced a prototype detector with a 50 micro-meter strip-pitch silicon device and measured the waveform for the beta-rays from 90Sr. We observed events having different multiplicities. For the future, precision of the angle reconstruction should be evaluated by using sources whose energy is higher than that by 90Sr.

对于作为伽玛射线相机的应用，我们尝试了利用硅微带探测器重建几MeV能量电子的轨迹角。仿真研究表明，利用25微米的条带-节距探测器，可以从多次碰撞中获得5 MeV电子的角度信息。我们制作了一个带有50微米条带间距硅器件的原型探测器，并测量了90Sr射线的波形。我们观察到的事件具有不同的多样性。今后，应采用能量高于90Sr的光源来评价角度重建的精度。