At LHC the design luminosity, 1034 cm -2 s -1 , has already been reached during Summer 2016. LHC is planning, in the short term future, to further enhance the luminosity, resulting in a higher trigger frequency and an increased pileup. These factors constitute a challenge for the data readout since the rate of data to be transmitted depends on both pileup and trigger frequency. In the ATLAS experiment, the effect of the increased luminosity is most evident in the Pixel Detector, which is the detector closest to the beam pipe. In order to face the difficult experimental challenges, the readout system was upgraded during the last few years. The main purpose of the upgrade was to provide a higher bandwidth by exploiting recent technologies. The new readout system is composed by two paired electronic boards, Back Of Crate (BOC) and ReadOut Driver (ROD). In this presentation the main readout limitation related to increased luminosity will be discussed as well as the strategy and the technological solutions adopted in order to cope with the future operational challenges. In addition the general progress and achievement will be presented.
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机译：在LHC，2016年夏季已达到1034 cm -2 s -1的设计光度。LHC计划在短期内进一步提高光度，从而提高触发频率并增加堆积。这些因素构成了数据读取的挑战，因为要传输的数据速率取决于堆积和触发频率。在ATLAS实验中，增加亮度的影响在像素检测器中最为明显，该检测器是最靠近束管的检测器。为了面对困难的实验挑战，在最近几年中对读取系统进行了升级。升级的主要目的是通过利用最新技术来提供更高的带宽。新的读出系统由两个成对的电子板组成，分别是板条箱（BOC）和读出驱动器（ROD）。在本演示文稿中，将讨论与提高亮度有关的主要读数限制，以及为应对将来的操作挑战而采用的策略和技术解决方案。此外，还将介绍总体进展和成就。
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