Embedded pitch adapters for the ATLAS Tracker Upgrade
Embedded pitch adapters for the ATLAS Tracker Upgrade
复制标题
用于 ATLAS 跟踪器升级的嵌入式俯仰适配器
DOI：
10.1016/j.nima.2013.07.078
复制
发表时间：
2013
影响因子：
1.4
通讯作者：
C. García
中科院分区：
文献类型：
--
作者：
M. Ullán;V. Benitez;G. Pellegrini;C. Fleta;M. Lozano;C. Lacasta;U. Soldevila;C. García
在当前的ATLAS跟踪器模块中，传感器焊盘被放置在相应的条上并沿条定向。这在传感器焊盘和读出电子焊盘之间造成了间距和方向上的差异。因此，需要一个音调适配器(PA)或“扇入”。这些PA的目的是使从探测器键合焊盘到读出芯片的每个通道电互连，以适应不同的焊盘间距。我们的新方法是在传感器内部构建这些功率放大器；这就是我们所说的嵌入式音调适配器。我们的想法是使用额外的金属层来定义一组新的焊盘，通过轨道与第二种金属连接到条带上。嵌入式功率放大器已经在4英寸的衬底上制作完成。用于ATLAS-UPDATE EndCap Tracker的传感器原型，以测试其性能和适用性。测试确认了第二金属轨道的正确制造，并且不影响探测器的性能。没有观察到第一和第二金属沟道之间存在串扰的迹象。在几个通道中观察到了可能从大块中拾取信号的小迹象，这需要进一步调查。
In the current ATLAS tracker modules, sensor bonding pads are placed on their corresponding strips and oriented along the strips. This creates a difference in pitch and orientation between sensor bond pads and readout electronics bond pads. Therefore, a pitch adapter (PA), or “fan-in”, is needed. The purpose of these PA is the electrical interconnection of every channel from the detector bonding pads to the read-out chips, adapting the different pad pitch. Our new approach is to build those PAs inside the sensor; this is what we callEmbedded Pitch Adapters. The idea is to use an additional metal layer in order to define a new group of pads, connected to the strips via tracks with the second metal. The embedded PAs have been fabricated on 4-in. prototype sensors for the ATLAS-Upgrade Endcap Tracker to test their performance and suitability. The tests confirm proper fabrication of the second metal tracks, and no effects on detector performance. No indication of cross-talk between first and second metal channels has been observed. A small indication of possible signal pick-up from the bulk has been observed in a few channels, which needs to be further investigated.