GAMPix：一种用于TPC的新型细粒度、低噪声、超低功耗像素化电荷读出装置
GAMPix: a novel fine-grained, low-noise and ultra-low power pixelated charge readout for TPCs
AI总结：
本研究开发了用于GammaTPC伽马射线仪器的新型GAMPix像素电荷读出系统，通过粗细尺度结合的电极架构解决扩散电荷损失与高功耗问题，实现细粒度低噪声超低功耗读出，还可应用于未来DUNE模块。
摘要：
我们报道了一种新型像素电荷读出系统——Grid Activated Multi-scale pixel readout（网格激活多尺度像素读出，GAMPix）的研发进展，该系统正为GammaTPC伽马射线仪器概念开发。GammaTPC旨在优化液氩时间投影室技术在伽马射线天体物理学中的应用，而细粒度低功耗电荷读出是该应用的核心需求。GAMPix采用兼具粗尺度与精尺度电极的新型架构，解决了扩散后测量电荷损失、读出功耗过高这两大难题。从根本上看，它能在时间投影室中由扩散限制的空间尺度下实现低噪声、超低功耗的电荷读出，还具备其他潜在应用场景，包括未来的DUNE模块。
英文摘要：
We report on the development of a novel pixel charge readout system, Grid Activated Multi-scale pixel readout (GAMPix), which is under development for use in the GammaTPC gamma ray instrument concept. GammaTPC is being developed to optimize the use of liquid argon time projection chamber technology for gamma ray astrophysics, for which a fine grained low power charge readout is essential. GAMPix uses a new architecture with coarse and fine scale instrumented electrodes to solve the twin problems of loss of measured charge after diffusion, and high readout power. Fundamentally, it enables low noise and ultra low power charge readout at the spatial scale limited by diffusion in a time projection chamber, and has other possibly applications, including future DUNE modules.
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