Development of a Read-out System with a PWO based Electro-Magnetic Calorimeter for the ALICE Experiment at LHC

为 LHC 的 ALICE 实验开发带有基于 PWO 的电磁热量计的读出系统

• 批准号: 15340079
• 负责人: SUGITATE Toru
• 金额: $ 10.43万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15340079/
• 关键词: Lead Tungstate Crystal; PWO; Electro-Magnetic Calorimeter; Avalanche Photo-Diode; Quark Matter; the ALICE experiment; APD; PHOS; タングステン酸鉛結晶; 高分解能PWO電磁カロリメータ

We have successfully developed a photon readout system of a newly developed lead-tungstate crystal for the Photon Spectrometer (PHOS) in the ALICE experiment at CERN-LHC. The PHOS is an electromagnetic calorimeter consisting of 17,920 channels of detector element based with a PWO crystal, and is designed to achieve the finest energy resolution and the best two-track resolution among EM-calorimeters for GeV particles so far built. The readout system is composed of an avalanche photo-diode (APD), a preamplifier board, a front-end electronics (FEE) board which is equipped with several functions of a pulse shaper, a pulse form digitizer, a digital data processor, a level-0 and -1 trigger processor, and a data transfer bus driver. The APD and preamplifier board has been designed, tested and fabricated in Japan. The APD/preamplifier sample has been used in a 256 channel prototype calorimeter and tested at CERN-PS and SPS in 2005-06. They showed an excellent performance as is designed and preliminary approved for mass-production. The FEE board was designed and tested in cooperation with groups from CCNU and WUST at Wuhan, China, since they are charged in the FEE board mass-production. A technical review of the readout system was held in May 2005, and Toru Sugitate presented its status and readiness as one of presenters. The approval for mass-production of the entire system has been officially given in Oct. The Grant-In-Aid project has then been successfully completed and we are ready for the PHOS construction. Based on this successful achievement, a new Grant-in-Aid has been proposed for a construction of the PHOS detector and studies of quark-gluon-plasma physics via the photon channel in ALICE at LHC.

在CERN-LHC的ALICE实验中，我们成功地为光子光谱仪（PHOS）研制了一种新型钨酸铅晶体的光子读出系统。PHOS是一种由17920通道探测器元件组成的基于PWO晶体的电磁量热计，旨在实现迄今为止建造的GeV粒子的最佳能量分辨率和最佳双道分辨率。该读出系统由雪崩光电二极管（APD）、前置放大板、前端电子（FEE）板组成，前端电子（FEE）板具有脉冲整形器、脉冲形式数字化仪、数字数据处理器、0和-1电平触发处理器和数据传输总线驱动器等功能。APD和前置放大器板在日本进行了设计、测试和制造。APD/前置放大器样品已用于256通道原型量热计，并于2005-06年在CERN-PS和SPS进行了测试。它们表现出了良好的性能，并初步批准了批量生产。FEE板是与中国武汉的CCNU和WUST团队合作设计和测试的，因为他们负责FEE板的批量生产。2005年5月对读出系统进行了技术审查，Toru Sugitate作为演讲者之一介绍了读出系统的状态和准备情况。整个系统已于10月正式批复量产，援建项目已顺利完成，为PHOS建设做好准备。在此基础上，提出了一项新的资助计划，用于构建PHOS探测器，并通过LHC ALICE中的光子通道研究夸克-胶子-等离子体物理。

项目成果

The PHOS Detector at ALICE

ALICE 的 PHOS 探测器

• 发表时间: 2006
• 期刊: AIP Conference Proceedings 842
• 作者: T. Sugitate (950 名中381番) K. Shigaki;Y. Miake;H. Hamagaki 他;Yasuo Cho;室崎 喬之 他;T.Sugitate
• 通讯作者: T.Sugitate

A high resolution electromagnetic calorimeter based on lead-tungstate crystals

• DOI: 10.1016/j.nima.2005.03.174
• 发表时间: 2005-09-11
• 期刊: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
• 影响因子: 1.4
• 作者: Aleksandrov, DV;Burachas, SF;Kohara, R
• 通讯作者: Kohara, R