ATLAS upgrade

欧洲核子研究中心的大型强子对撞机（LHC）将拥有几十年来任何粒子物理设施中最高的直接能量，加拿大在大型强子对撞机ATLAS合作中的核心作用将使我们保持在国际粒子物理的前沿。虽然LHC和ATLAS现在才刚刚完成了最初的加速器和探测器调试，预计2010年将获得第一批物理结果，但现在已经到了考虑LHC加速器和ATLAS探测器子系统升级计划的时候了。到2014年左右，ATLAS探测器的几个子系统将达到其辐射损伤极限，需要更换。为了扩大大型强子对撞机物理项目的覆盖范围，它打算分阶段增加大型强子对撞机的瞬时亮度，最终达到一个数量级的增长。瞬时光度的增加将需要使用能够处理更高速率和辐射剂量的技术对探测器进行重大升级。这项申请是为加拿大物理学家提供资金，用于进行必要的研发，以继续我们在未来的ATLAS实验中的领导地位，包括非常高速率能量测量量热计，耐辐射和薄像素辐射探测器，先进的高速率切伦科夫探测器和辐射监测设备。

The CERN Large Hadron Collider (LHC) will have the highest direct energy reach of any particle physics facility for decades, and Canada's central role in the ATLAS collaboration at the LHC will keep us in the forefront of international particle physics. While the LHC and ATLAS are only now completing initial accelerator and detector commissioning with first physics results expected in 2010, it is already time to consider the upgrade program of both the LHC accelerator and the ATLAS detector sub-systems. By about 2014, several of the ATLAS detector subsystems will be reaching their radiation damage limit and need replacement. In order to extend the reach of the LHC physics program, it is intended to increase the instantaneous luminosity of the LHC in stages eventually reaching an order of magnitude increase. The increase in instantaneous luminosity will require significant detector upgrades using technologies capable of handling the higher rates and radiation doses. This request is for funds for Canadian physicists to perform the R&D necessary to continue our leadership in the ATLAS experiment into the future, including very high rate energy measuring calorimeters, radiation tolerant and thin pixel radiation detectors, advanced high-rate Cerenkov detectors and radiation monitoring devices.