STUDY OF POSITION RESOLUTION OF ELECTRIC-SHOWER CALORIMETER USING MULTIANODE PHOTOMULTIPLIER READ OUT.

使用多极光电倍增器读数的电喷热量计位置分辨率的研究。

• 批准号: 06640384
• 负责人: TAKESHITA Tohru
• 金额: $ 0.96万
• 依托单位: SHINSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06640384/
• 关键词: MULTI-ANODE PHOTOMULTIPLIER; MEASUREMENT OF POSITION; ELECTROMAGNETIC SHOWER CALORIMETER; 電磁カロリメータ

LAST YEAR WE HAVE CONSTRUCTED A SYSTEM WHICH IS ABLE TO TAKE ANALOG-SIGNALS FROM A MULTIANODE-PHOTOMULTIPLIER AND CONVERT THEM TO DIGITAL DATA SIMUTANEOUSLY.WE NOW CAN TEST A MULTIANODE PHOTOMULTIPLIER TUBE UNDER THIS SYSTEM.HOWEVER WE HAD AN PROBLEM TO MOVE THE POSITION OF THE LIGHT SOURCE.THIS HAS BEEN RESOLVED BY INTRODUCING A MACHINE WHICH IS ABLE TO MOVE THE MULTIANODE PHOTOMULTIPLIER TUBE PRECISELY.WE ALSO INTRODUCED A RECENTLY DEVELOPED BLUE COLORED LIGHT EMITTING DIODE(LED). THE LIGHT EMITTED BY THIS LED IS JUST IN THE MIDDLE OF THE SENSITIVE WAVE LENGTH OF THIS TUBE MAKE THE MEASUREMENT RELIABLE.WITH USING THIS LIGHT SOURCE,ALTHOUGH THE SPOT IS NOT PERFECTLY A POINT,WE COULD REACH A POSITION RESOLUTION OF 0.4MM IN THE CENTER REGION AND ABOUT 0.6MM AT 25MM AWAY FROM THE CENTER.HOWEVER WE FOUND A FUNNY BEHAVIOR AT A CERTAIN POSITION OF THIS PHOTOMULTIPLIER.WE ARE ALSO INVESTIGATING THIS PHENOMENA AND ALSO ASKING A COMPANY WHICH PRODUCED THIS TUBE WHY THIS KIND OF BEHAVIOR HAPPENED.IN THE MEAN TIME,A PURPOSE OF THIS PROJECT WAS TO MEASURE A START POSITION OF A ELECTROMAGETIC SHOWER PRECISELY WITH A HELP OF MULTIANODE PHOTOMULTPLIER TUBE CAPABILITY.LIGHT OUTPUT FROM THE SHOWER BEGGING IS EXPECTED VERY SMALL SO THAT THIS TUBE SHOULD GOOD ENOUGH TO DETECT A FEW PHOTOELECTRONS IN A EVENT.WE HAD INSTALLED EGS4 WHICH IS FAMOUSE IN THE ELECTROMAGNETIC SHOWER SIMULATION AND TESTED NOT ONLY THE SHOWER PROFILE BUT ALSO FLUCTUATIONS FOR THE SHOWER STARTING.THIS IS ALSO TESTED BY AN EXPERIMENTS WITH A MULTIANODE PHOTOMULTIPLIER TUBE.THE RESULTS ARE ALSO PRESENTED.

去年，我们构建了一个系统，能够从多极光电倍增器获取模拟信号，并将其同时转换为数字数据。现在我们可以在该系统下测试多极光电倍增管。但是，我们在移动时遇到了问题光源的位置。通过引入能够精确移动多极光电倍增管的机器解决了这个问题。我们还推出了最近开发的蓝色 彩色发光二极管（LED）。该LED发出的光正好处于该管敏感波长的中间，使测量可靠。使用该光源，虽然光斑不是完美的一个点，但我们可以在中心区域达到0.4MM的位置分辨率，在25MM处达到约0.6MM的位置分辨率远离中心。然而，我们在这个光电倍增管的某个位置发现了一个有趣的行为。我们也在调查这种现象，并询问生产这种管的公司为什么会出现这种情况 行为发生了。同时，该项目的目的是借助多极光倍增管能力来精确测量电磁喷淋的起始位置。预期来自喷淋的光输出非常小，因此该管应该足以检测到事件中的一些光电子。我们安装了在电磁喷淋模拟中著名的 EGS4，不仅测试了喷淋剖面，还测试了电磁喷淋的波动。 淋浴开始。这也通过多极光电倍增管的实验进行了测试。结果也已呈现。

项目成果

Y.Fujii: "Tests of photon-detection devices in strong magnetic feilds" Nuceear Instruments & Methods in Physics Research. A366. 71-75 (1995)

Y.Fujii：“强磁场中光子探测装置的测试”Nuceear Instruments

Y.FUJII: "TESTS OF PHOTON-DETECTION DEVICES IN STRONG MAGNETIC FIELDS" NUCL.INST.METH.A366. 71-75 (1995)

Y.FUJII：“强磁场中光子检测装置的测试”NUCL.INST.METH.A366。

Y.Fujii: "Tests of Photon-detection devices in strong magnetic fields" Nuclear Instruments & Methods in Physics Research. A366. 71-75 (1995)

Y.Fujii：“强磁场中光子探测装置的测试”核仪器