Research and Development of a liquid argon calorimeter with a fast readout technique

快速读数液氩量热仪的研制

• 批准号: 02402007
• 负责人: WATANABE Yasushi
• 金额: $ 18.43万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02402007/
• 关键词: CRYOGENICS; LIQUID ARGON; HIGH SPEED READOUT; ハーメティシティ; 液体アルゴンカロリメ-タ; パイルアップ効果; SSC; e; h因子; エネルギ-分解能; カロリメ-タ

1)Mechanical design of the liquid argon calorimeter We have designed a liquid argon hadronic calorimeter to be used at a hadron collider such as the SSC.The design has been optimized to maximize the hermeticity and at the same time to satisfy the safety requirement.We have also considered how to support,how to assemble,how to cool and how long it takes to complete the calorimeter.On the cooling of the preamps to be placed within the liquid,we made an actual test to prove that they can be safely cooled. 2)Beam test of a calorimeter with fast shaping times. We have built a lead-liquid argon calorimeter of the size 1 m by 1m with 1.7 m depth(7.5 interaction lengths),and tested it with beams of electrons and pions of energies between 0.5 and 20 GeV/cat the Brookhaven National Laboratory.The shaping times tested were 50,100 and 200 ns. We investigated the energy and timing resolutions,difference of responses on electrons and pions(e/h ratio),and pile up effect. With hese studies,we could conclude that the technique of liquid argon with fast read out is a viable one for a use at a hadron collider such as the SSC or LHC.

1）液体氩量热仪的机械设计我们设计了一个液体氩气量激量激量激量计，可以在强子对撞机（例如SSC）（SSC）中使用。该设计经过优化，以最大程度地提高耐药性，并同时满足安全性。我们还可以考虑如何在液态下进行安装，如何使液体组合在一起。实际测试以证明可以安全冷却。 2）量热计的光束测试，并具有快速成型时间。我们已经建立了1 m乘1m的铅液氩热量，深度为1.7 m（7.5相互作用长度），并用电子梁和能量梁和能量触发在0.5至20 GEV/CAT之间进行了测试。所测试的成型时间为50,100 ns和200 ns。我们研究了能量和计时分辨率，电子和培养的响应差异（E/H比）以及堆积效果。通过研究，我们可以得出结论，快速读取的液体氩技术是可行的，用于在SSC或LHC等强子对撞机上使用。

项目成果

SDC Liquid Argon Group: "‘Calorimeter Conceptual Design Liquid Argon Option'" (1991)

SDC 液氩集团：“‘量热仪概念设计液氩选项’”(1991)

SDC Liquid Argon Group: "Calorimeter Conceptual Design Liquid Argon Option" SDC Technical Report. August. (1991)

SDC 液氩集团：“量热仪概念设计液氩选项”SDC 技术报告。

G.S.Abrams et al.: "‘Performance of Lead-Liquid Argon Hadron Calorimeter with Fast Shaping Readout'," Nucl.Instr.Meth.

G.S.Abrams 等人：“‘具有快速整形读数功能的铅液氩强子热量计的性能’”，Nucl.Instr.Meth。

Y.Unno: "Progress of Design/Cooling Test of Preamps at KHI" Proc.the SDC Collaboration Meeting at KEK.Ed.Y.Unno,KEK,. 1163- (1991)

Y.Unno：“KHI 前置放大器的设计/冷却测试进展”Proc.the SDC Collaboration Meeting at KEK.Ed.Y.Unno,KEK,。

H.Hirayama: "‘Effects of the material to the EM calorimeter and its recovery'" Nucl.Instr.Meth.A302. 427- (1991)

H. Hirayama：“‘材料对电磁热量计的影响及其恢复’”Nucl.Instr.Meth.A302-(1991)。