Commissioning of the ACtive TARget and Time Projection Chamber (ACTAR TPC)
Commissioning of the ACtive TARget and Time Projection Chamber (ACTAR TPC)
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DOI：
10.1016/j.nima.2019.06.067
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发表时间：
2019-10-01
影响因子：
1.4
通讯作者：
Yang, J.
中科院分区：
文献类型：
--
作者：
Mauss, B.;Morfouace, P.;Yang, J.
主动目标和时间投影室（ACTAR TPC）是最近在GANIL建造的一种新型充气探测器。这种多功能探测器是一种气态厚靶，允许在三维空间中跟踪带电粒子，并从顶点位置提供精确的反应能量重建。利用3.2MeV/核子（18）O束在异丁烷气体（质子）靶上的共振散射进行了调试实验。光束和重散射离子在气体体积中停止，而轻反冲离开活性体积并在辅助硅检测器中停止。应用专用的跟踪算法来确定离子的发射角度和轨迹的长度，以重建用于建立H-1（O-18，O-18）H-1和H-1（O-18，N-15）He-4反应的激发函数的反应动力学。在这篇文章中，我们描述了探测器的设计和数据分析，导致质子和α通道的质量中心反应能量分辨率分别为38（4）keV FWHM和54（9）keV FWHM。
The ACtive TARget and Time Projection Chamber (ACTAR TPC) is a novel gas-filled detector that has recently been constructed at GANIL. This versatile detector is a gaseous thick target that allows the tracking of charged particles in three dimensions and provides a precise reaction energy reconstruction from the vertex position. A commissioning experiment using resonant scattering of a 3.2 MeV/nucleon(18)O beam on an isobutane gas (proton) target was performed. The beam and the heavy scattered ions were stopped in the gas volume, while the light recoil left the active volume and were stopped in auxiliary silicon detectors. A dedicated tracking algorithm was applied to determine the angle of emission and the length of the trajectory of the ions, to reconstruct the reaction kinematics used to built the excitation functions of the H-1(O-18,O-18)H-1 and H-1(O-18,N-15)He-4 reactions. In this article, we describe the design of the detector and the data analysis, that resulted in center of mass reaction energy resolutions of 38(4) keV FWHM and 54(9) keV FWHM for the proton and alpha channels, respectively.