First radiation hardness results of the TeraPixel Active Calorimeter (TPAC) sensor
First radiation hardness results of the TeraPixel Active Calorimeter (TPAC) sensor
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DOI：
10.1088/1748-0221/8/01/p01007
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发表时间：
2013-01-01
影响因子：
1.3
通讯作者：
Zhangh, Z.
中科院分区：
文献类型：
--
作者：
Price, T.;Watson, N.;Zhangh, Z.
TeraPixel有源量热计（TPAC）传感器是一种新型的单片有源像素传感器（MAPS）设备，用于未来e(+)e（-）对撞机的大面积数字电磁量热计（DECAL）的有源层。进一步的应用，包括未来轻子对撞机和大型强子对撞机升级的跟踪和顶点系统，已经提出，因此，表征这些应用中传感器的行为是必不可少的。我们提出了TPAC传感器辐射硬度测试的初步研究。在50 keV x射线照射高达5 Mrad后，对传感器的性能进行了评估。在实际的ILC运行条件下，在200 krad （5 Mrad）后观察到信噪比最大下降8%(15%)，这已经足以用于未来的e(+)e（-）对撞机。
The TeraPixel Active Calorimeter (TPAC) sensor is a novel Monolithic Active Pixel Sensors (MAPS) device developed for use as the active layers of a large area, digital electromagnetic calorimeter (DECAL) at a future e(+)e(-) collider. Further applications, which include the tracking and vertex systems for future lepton colliders and LHC upgrades have been proposed and it is therefore essential to characterise the behaviour of the sensor for these applications. We present the first studies of radiation hardness testing of the TPAC sensor. The performance of the sensor has been evaluated after exposures up to 5 Mrad of 50 keV x-rays. Under realistic ILC operating conditions a maximum decrease in the signal to noise ratio of 8% (15%) was observed after 200 krad (5 Mrad) which is already sufficient for proposed applications in future e(+)e(-) colliders.