Time Projection Chamber Development for the International Linear Collider

国际直线对撞机时间投影室开发

• 批准号: SAPPJ-2017-00043
• 负责人: Bellerive, Alain
• 金额: $ 1.71万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=645071
• 关键词: Time; Projection; Chamber; Development; International

The International Linear Collider (ILC) is the next proposed world facility to study subatomic physics at the energy frontier. The ILC is an electron positron collider with collision energy of 500 GeV initially, with the possibility for a later upgrade to 1 TeV. The strong scientific justification is that the ILC would complement the Large Hadron Collider (LHC). Particle physicists are convinced that the ILC will be essential for a better understanding of subatomic physics in the post-LHC era. The ILC with its precision measurements would supplement LHC physics, shedding more light on the recent discovery of the Higgs boson as well as on the future LHC discoveries likely to be made in the coming years. Encompassing many years of globally coordinated R&D effort for the construction of both the accelerator and detectors for physics at ILC, a Technical Design Report (TDR) was prepared by the ILC community. The TDR contains all needed information for the host nation to make a decision on the ILC approval. In the context of the ILC to be hosted in Japan, the decision is expected by 2018, with a call for experiments at ILC shortly thereafter. The applicants for this NSERC Project Grant have been members of the International Large Detector (ILD), one of two approved ILC detector concept groups working toward the final design and construction of the ILC experiments. A critical design goal for ILC detectors is excellent charged particle tracker resolution for energetic leptons from events with a Higgs boson. A large volume Time Projection Chamber (TPC) will be used as the main tracker for the ILD. Micro-Pattern Gas Detectors (MPGDs) are being developed for the ILD TPC readout to achieve its demanding 100-micron transverse resolution goal for all track hits in the 4.7m long TPC. Canadians have been among the leaders in ILD TPC R&D from the very beginning and their contribution has been internationally recognized. The development of a new charge dispersion MPGD readout concept by the proponents led the Micromegas modules instrumented with a resistive layer to become an option being developed for the ILD TPC readout. During the last grant cycle, beam tests with a 1-m prototype at DESY demonstrated that the MPGD TPC equipped with the resistive layer readout could achieve the resolution goals specified in the TDR. The proposed two-year grant will enable us to finalize our existing commitments for the TPC R&D, in time for the ILC approval and to allow the synchronization of the participation in ILD with other Canadian groups engaged in calorimetry R&D for ILC. At this stage of the project, a continued maintenance of the ILD TPC effort is vital to ensure an active participation of Canada in the ILC, if it is going to be approved by the Japanese Government. The ILC is strongly supported by the international particle physics community and by the recently completed Canadian Subatomic Physics Long Range Plan 2017-2021.

国际直线对撞机（ILC）是下一个拟议中的在能源前沿研究亚原子物理的世界设施。ILC是一个正负电子对撞机，最初的碰撞能量为500 GeV，以后可能升级到1 TeV。强有力的科学理由是，ILC将补充大型强子对撞机（LHC）。粒子物理学家相信，ILC对于更好地理解后LHC时代的亚原子物理学至关重要。ILC的精确测量将补充LHC物理学，为最近发现的希格斯玻色子以及未来几年可能进行的LHC发现提供更多信息。ILC社区为建造加速器和物理探测器进行了多年的全球协调研发工作，编写了一份技术设计报告。《贸易和发展报告》载有东道国就国际法委员会的批准作出决定所需的所有信息。鉴于国际法委员会将设在日本，预计将于2018年作出决定，并呼吁在此后不久在国际法委员会进行试验。该NSERC项目资助的申请人是国际大型探测器（ILD）的成员，这是两个批准的ILC探测器概念小组之一，致力于ILC实验的最终设计和建造。ILC探测器的一个关键设计目标是对来自希格斯玻色子事件的高能轻子进行出色的带电粒子跟踪分辨率。大容量时间投影室（TPC）将用作ILD的主要跟踪器。微图案气体探测器（MPGD）正在开发的ILD TPC读出，以实现其要求的100微米的横向分辨率目标的所有轨道命中在4.7米长的TPC。加拿大人从一开始就在ILD TPC研发方面处于领先地位，他们的贡献得到了国际认可。支持者开发了一种新的电荷分散MPGD读出概念，这使得配备电阻层的Micromegas模块成为ILD TPC读出的一种选择。 在最后一个赠款周期，在DESY的1米原型的束流测试表明，MPGD TPC配备电阻层读出可以实现TDR中指定的分辨率目标。拟议的两年赠款将使我们能够及时完成TPC研发的现有承诺，以获得ILC的批准，并允许与其他从事ILC热量测定研发的加拿大团体同步参与ILD。在项目的现阶段，继续维持ILD TPC工作对于确保加拿大积极参与ILC至关重要，如果它将得到日本政府的批准。ILC得到了国际粒子物理界和最近完成的加拿大亚原子物理长期计划2017-2021的大力支持。