The Research and Development Board of the International Linear Collider

国际直线对撞机（International Linear Collider，简称ILC）是一种新型的正负电子对撞机。与欧洲核子研究中心的大型强子对撞机一起，它将使物理学家能够探索当今加速器无法达到的能量区域。在这些能量下，研究人员预计会有重大发现，这些发现将导致对宇宙是由什么组成以及它如何运作的全新理解。ILC的电子-正电子碰撞的性质将使它有能力回答LHC的发现将提出的令人信服的问题，从暗物质的身份到额外维度的存在。在ILC的设计中，两个相对的直线加速器，每个20公里长，以接近光速的速度向对方投掷电子束和正电子束。在当前的设计中，每个束流包含100亿个电子或正电子，被压缩到极小的3纳米厚度。当粒子在对撞机上加速时，超导加速腔会给它们越来越多的能量。它们在激烈的碰撞中相遇。ILC全球设计工作组（GDE）将集中北美、欧洲和亚洲数百名加速器科学家和粒子物理学家的努力，确定ILC的最终配置。 ILC将作为一个完全国际化的科学项目进行设计、资助、管理和运作。 一项国际努力将确定该项目的行政和财务模式。 本提案的PI已被要求加入GDE，担任全球研发委员会（RDB）主席，负责监督全球研发工作。在此职位上，他将向GDE主任报告，并与三位区域主任密切合作，区域主任将在其区域内的众多机构之间提供协调。通过许多研讨会和评估，ILC已经成为美国粒子物理界的最高优先事项。

The International Linear Collider (ILC) is a proposed new electron-positron collider. Together with the Large Hadron Collider at CERN, it would allow physicists to explore energy regions beyond the reach of today's accelerators. At these energies, researchers anticipate significant discoveries that will lead to a radically new understanding of what the universe is made of and how it works. The nature of the ILC's electron-positron collisions would give it the capability to answer compelling questions that discoveries at the LHC will raise, from the identity of dark matter to the existence of extra dimensions. In the ILC's design, two facing linear accelerators, each 20 kilometers long, hurl beams of electrons and positrons toward each other at nearly the speed of light. In the current design, each beam contains ten billion electrons or positrons compressed to a minuscule three-nanometer thickness. As the particles speed down the collider, superconducting accelerating cavities give them more and more energy. They meet in an intense crossfire of collisions. The energy of the ILC's beam can be adjusted to home in on processes of interest.The ILC Global Design Effort (GDE) will establish the final configuration of the ILC, focusing the efforts of hundreds of accelerator scientists and particle physicists in North America, Europe and Asia. The ILC will be designed, funded, managed and operated as a fully international scientific project. An international effort will define the administrative and financial model for the project. The PI of this proposal has been asked to join the GDE as Chair of the global Research and Development Board (RDB), with the tasks of overseeing of the Global R&D effort, In this role e will report to the GDE Director, and work closely with the three RegionalDirectors, who will provide coordination among the numerous institutions in their region. This proposal requests support for the RDB Chair.Through many workshops and evaluations, the ILC has emerged as the highest priority of the U.S. Particle Physics Community.