Joint study on liquid calorimeters for SDC experiments

用于SDC实验的液体量热仪联合研究

• 批准号: 03044018
• 负责人: YUTA Haruo
• 金额: $ 8万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03044018/
• 关键词: Elementary Particle Physics; Accelerator; Detector; Calorimeter; Liquid Argon Calorimeter; Warm Liquid Calorimeter; 素粒子実験; ハドロンコライダ-; カロリメ-タ-; 液体アルゴンカロリメ-タ-; 室温液体カロリメ-タ-

This research project has been carried out as a joint research with the US laboratories, Fermilab, Lawrence Berkeley Lab., Brookhaven National Lab. and Stanford Linear Accelerator Center, from 1991 through 1993. The primary object of this research was to study the feasibility and performance of liquid argon- and warm liquid calorimeters for the super conductive super collider (SSC) which was supposed to be built at Texas in the United States.Through this grand-in-aid from International Scientific Research Program, 26 researchers were sent to the US laboratories to carry the experiments and the data analyses. 3 researchers from the US laboratories came to Japan for summarizing the results.The major results obtained from this research are as follows : For the lead-liquid argon calorimeter with fast shaping readout of 100ns, the energy resolutions, sigma/E=(21.8*0.4)/ROO<E>% and (61.6*0.6)/ROO<E>% for electrons and pions, respectively. A timing resolution of 9.3ns is obtained for the electrons at 10GeV. Pile-up effects are estimated to be small at the nominal luminosity of the SSC. For the warm liquid calorimeter with Tetramethylpentane, the signal response ratio, e/h was obtained to be 1.1 for the lead absorbers. The energy resolutions are similar to liquid argon calorimeters. This study indicates that the warm liquid calorimeter can be used for the SSC experiments. However, we need further feasibility study because of stringent requirement of high liquid purity.

这项研究项目是与美国实验室费米实验室、劳伦斯伯克利实验室、布鲁克海文国家实验室。和斯坦福大学直线加速器中心，从1991年到1993年。本研究的主要目的是为美国德克萨斯州的超导超级对撞机（SSC）研究液态氩量热计和温液体量热计的可行性和性能，通过国际科学研究计划的资助，26名研究人员被派往美国实验室进行实验和数据分析。美国实验室的3名研究人员来日本总结成果，本次研究获得的主要成果如下：对于100 ns快速成形读数的铅液氩量能计，电子和π子的能量分辨率分别为sigma/E=（21.8*0.4）/ROO <E>%和（61.6*0.6）/ROO <E>%。对10 GeV电子获得了9.3ns的时间分辨。堆积效应估计是小的标称光度的SSC。对于具有四甲基戊烷的温液体量热计，对于铅吸收体获得的信号响应比e/h为1.1。能量分辨率类似于液态氩量热计。研究表明，温液体量热计可用于SSC实验。但由于对液体纯度的要求较高，还需要进一步的可行性研究。

项目成果

H.Ichinose et al.: "The response of a Liquid Xe Ionization Chamber to 5.3MeV alpha-particles" NIM. A305. 111-115 (1991)

H.Ich​​inose 等人：“液氙电离室对 5.3MeV α 粒子的响应”NIM。

K.Masuda et al.: "Measurement of a liquid Xe scintillation from heavy ions using a silicon photodiode" NIM. A309. 489-496 (1991)

K.Masuda 等人：“使用硅光电二极管测量重离子的液体 Xe 闪烁”NIM。

G.S.Abrams et al.: "Performance of Lead-Liquid Argon Hadron Calorimeter with Fast Shaping Readout" To be submitted to NIM. (1994)

G.S.Abrams 等人：“Performance of Lead-Liquid Argon Hadron Calorimeter with Fast Shaping Readout” 提交给 NIM。

H.YUTA et al: "Signal Observation from a pulsed Ionization chamber filles with Tetramethyl Germanium" Japanese Journal of Applies Physics. 30. L525-L527 (1991)

H.YUTA 等人：“来自充满四甲基锗的脉冲电离室的信号观察”日本应用物理学杂志。

T.Doke et al: "Sampling Calorimeter for High Energy Heavy particles filles with Allen-doped liquid Argon" Nucl.Instr.and Meth.A302. 290-300 (1991)

T.Doke 等人：“用于填充艾伦掺杂液态氩的高能重粒子的采样热量计”Nucl.Instr.and Meth.A302。