Development of medium and high energy electron instrument with active collimated shield

主动准直屏蔽中高能电子仪器研制

• 批准号: 13640450
• 负责人: TAKASHIMA Takeshi
• 金额: $ 0.77万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640450/
• 关键词: High energy electrons; Particle detector; Active shield; 電子線計測; 井戸型検出器

When we know the minute mechanism in the acceleration process of a high-energy particle the electron observation from a few ten keV to several MeV needs to be measured with high resolution about time, pitch angle and energy. However, the observation devices of the electron that had the energy of several 10 keV -several MeV, there is not the good thing of accuracy sufficiently in Japan.By applying the well style active collie meter that has been used as the measurement technology such as gamma ray in this research, we did the development of the electron measuring system that a high-energy particle acts correctly, even in the high-count rate radiation environment. Also, both a double-sided Si strip detector (DSSD) and an exclusive reading circuit of the DSSD were developed to improve energy measurement accuracy for the middle energy range. By combining the well style CsI scintillater and DSSD, we were able to decide the incidence direction of a high-energy electron within several degrees. The instrument that had been used in spacecraft was unable to measure energy or flux of electrons correctly under the high radiation environment because of pile-up of particles. We successes the development of the new instrument that were consisted of DSSDs and reading chips developed in this study had been able to measure both the energy and the flux of electrons exactly under the high radiation environment.

当我们知道高能粒子加速过程中的微小机制时，从几十keV到几MeV的电子观测需要对时间、俯仰角和能量进行高分辨率的测量。然而，在日本，能量为几十keV -几十MeV的电子的观测装置，还没有足够精确的好东西。本研究通过应用作为γ射线等测量技术的井型有源牧羊犬计，开发了高能粒子正确作用的电子测量系统，即使在高计数率辐射环境中。此外，双面硅条探测器（DSSD）和专用阅读电路的DSSD开发，以提高能量测量精度的中间能量范围。将阱型CsI晶体和DSSD相结合，可以在几个角度内确定高能电子的入射方向。在高辐射环境下，由于粒子的堆积，航天器上使用的仪器无法正确测量电子的能量或通量。本研究成功地研制了一种由DSSD和阅读芯片组成的新仪器，该仪器能够在高辐射环境下准确地测量电子的能量和通量。