Developement of high precision visualization system for high intensity particle beams

高强度粒子束高精度可视化系统研制

基本信息

批准号：
09554007
负责人：
HASHIMOTO Osamu
金额：
$ 7.04万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

The aim of the present study is to develop detector systems capable of measuring particle tracks and visualize them under high rate environment. To this end, we have(1) constructed 0.5 mm multiwire proportional chamber and investigated its performance,(2) designed and fabricated 32 ch compact preamplifier system for MWPC and,(3) fabricated 0.5 mm pitch silicon strip detector system and studied to what extent the system works under high radiation dose.We have been using 2.5 mm drift chamber for various experiments with high intensity secondary beams such as pions and kaons. However, since we are entering into the new phase that secondary particle beams with much higher beam intensity are available, it is very important to develop high resolution tracking devices. Compared with the 2.5 mm drift chamber, the 0.5 mm MWPC will have one order of magnitude less count rate per wire, thus can handle 10 times higher particle intensity. Yet, it will give us better position resolution.The 0.5 mm MWPC was tested with Ar-Isobutane gas and it was found the chamber present reasonable plateau and works quite well with the magic gas mixture.In addition, a new 32 ch preAmplifier which has twice density was developed based on 4 ch Amplifier-Shaper-Discriminator chips. It showed good performance and the high-integration read-out system is now ready for use.Furthermore, a 0.5 mm pitch SSD which are integrated with the three 48 ch-preAmp-shaper-discriminator ASIC chips has been successfully developed and it has been used as a focal plane detector system of the electron spectrometer.

本研究的目的是开发能够在高速率环境下测量粒子轨道并将其可视化的检测系统。为此，我们（1）构建了0.5毫米的多线室，并研究了其性能，（2）设计和制造的32 ch CH紧凑型前置放大器系统用于MWPC，以及（3）（3）制造0.5 mm Pitch Silicon条带状探测器系统，并在何种程度上研究了在何种程度上使用2.5 mm MM MM MM MM MM MM Driftentions的启发。 kaons。但是，由于我们正在进入新阶段，即具有更高光束强度的二次粒子梁，因此开发高分辨率跟踪设备非常重要。与2.5 mm漂移室相比，0.5 mm MWPC的计数速率降低了一个数量级，因此可以处理颗粒强度更高的10倍。然而，它将为我们提供更好的位置分辨率。使用AR-ISOBUTANE气体测试了0.5 mM MWPC，发现腔室的平原呈合理的高原，与魔术气体混合物非常有效。此外，在4个基于4个CH Amplifier-Shaper-Shaper-Shaper-Shaper-shaper-shaper-shaper-simplifier-shaper-Iscliminator chips开发的新型32 Chepreamplifier中。它表现出良好的性能，高积分读出系统现在可以使用。Furthermore，一种0.5 mm的音高SSD，与三个48 48个CH-Preamp-Shaper-Distaper-Distaper-Discriminator ASIC芯片集成在一起，已成功开发出来，并且已被用作电子光谱仪的焦点探测器系统。