Next-generation experiments with the Active Target Time Projection Chamber (AT-TPC)
Next-generation experiments with the Active Target Time Projection Chamber (AT-TPC)
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DOI：
10.1016/j.nima.2018.10.019
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发表时间：
2018-04
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通讯作者：
D. Bazin;T. Ahn;Y. Ayyad;S. Beceiro-Novo;L. Carpenter;M. Cortesi;M. Kuchera;W. G. Lynch;W. Mittig;J. Randhawa;C. Santamaria;N. Watwood;J. Yurkon
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文献类型：
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作者：
D. Bazin;T. Ahn;Y. Ayyad;S. Beceiro-Novo;L. Carpenter;M. Cortesi;M. Kuchera;W. G. Lynch;W. Mittig;J. Randhawa;C. Santamaria;N. Watwood;J. Yurkon
摘要国家超导回旋加速器实验室（NSCL）的主动靶时间投影室（AT-TPC）项目是一种新型主动靶，旨在研究低强度奇异束引起的核反应。AT-TPC同时作为跟踪介质和目标，提供出色的角度（1°）和能量分辨率（3% FWHM）以及高亮度。AT-TPC在低能核物理领域提供了广泛的应用。共振散射和转移反应通常使用能量范围为1至10 A MeV且强度低至100 pps的光束与有源靶一起进行。AT-TPC也是一个很有前途的工具，实验中的可观测的利益，需要更高的光束能量（100 A MeV以上）。特别地，可以用这种装置在轻目标上进行非弹性散射反应，其中反冲粒子具有非常低的动能（小于1 MeV）。在这项工作中，我们讨论了AT-TPC实验计划的各个方面，重点是利用该探测器提供的出色功能的实验。此外，我们介绍了一个新的时间投影室探测器的概念设计，用于特定的测量反应，使用特殊的气体作为目标。
Abstract The Active Target Time Projection Chamber (AT-TPC) project at the National Superconducting Cyclotron Laboratory (NSCL) is a novel Active Target designed to study nuclear reactions induced by low-intensity exotic beams. The AT-TPC acts as a tracking medium and target at the same time, providing excellent angular (1°) and energy resolution (3% FWHM) and high luminosity. The AT-TPC offers a broad range of applications within the low-energy nuclear physics domain. Resonant scattering and transfer reactions are typically performed with Active Targets using beams with energies spanning from 1 to 10 A MeV and with intensities as low as 100 pps. The AT-TPC is also a promising tool for experiments where the observables of interest require higher beam energies (above 100 A MeV). In particular, inelastic scattering reactions on light targets, where the recoil particle has a very low kinetic energy (less than 1 MeV), can be performed with such a device. In this work, we discuss aspects of the AT-TPC experimental program, focusing on experiments that leverage the outstanding capabilities this detector offers. In addition, we introduce a conceptual design for a new Time Projection Chamber detector for specific measurements of reactions using special gases as targets.