Commissioning and beam test of a high pressure time projection chamber
Commissioning and beam test of a high pressure time projection chamber
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高压时间投影室调试及束流测试
DOI：
10.1016/j.nima.2019.04.107
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Deisting A
中科院分区：
文献类型：
--
作者：
Deisting A
由于粒子探测的有效体积大且能量阈值低，时间投影室 (TPC) 是在下一代长基线中微子振荡实验（例如 DUNE 和 Hyper-K）中表征中微子束的有希望的候选者。与大气压下的 TPC 相比，高压填充气体的 TPC (HPTPC) 的入射中微子束的更高目标密度将有可能实现更好的中微子-核相互作用测量。我们建造的 HPTPC 的有效体积约为 0.5 m 3 ，嵌入额定绝对压力高达 6 bar 的压力容器中。三个网格的级联放大了初级电离。读出每个网格上的感应电荷。此外，气体放大过程中发射的光子由聚焦在读出平面上的四个 CCD 摄像机读出，从而对粒子轨迹在横向平面上的 2D 投影进行成像。第三坐标是根据电荷信号重建的。我们在 CERN PS 进行的为期 4 周的束流测试中测试了 HPTPC 的性能，测量低动量质子 (≤ 0.5 GeV) 与计数气体的相互作用。已经测试了几种以氩气为主的混合物的光产量和气体增益。目的是从数据样本中计算质子-Ar截面，这将进入中微子Ar散射终态相互作用的计算。
Due to their large active volume and low energy threshold for particle detection Time Projection Chambers (TPCs) are promising candidates to characterise neutrino beams at the next generation long baseline neutrino oscillation experiments such as DUNE and Hyper-K. The higher target density for the incoming neutrino beam of a TPC filled with gas at High Pressure (HPTPC) will potentially allow a better neutrino-nucleus interaction measurements as compared with TPCs at atmospheric pressure. The HPTPC we built has an active volume of about 0.5 m 3 which is embedded into a pressure vessel rated up to 6 bar absolute pressure. A cascade of three meshes amplifies the primary ionisations. The induced charge on each mesh is read out. In addition the photons emitted during the gas amplification are read out by four CCD cameras focused on the readout plane, which thus image the 2D projection of a particle’s tracks on the transverse plane. The third coordinate is reconstructed from the charge signal. We tested the HPTPC’s performance during a four week beam test at the CERN PS, measuring low momentum proton (≤ 0.5 GeV) interactions with the counting gas. Several mixtures with Argon predominance have been tested for their light yield and gas gain. The aim is to calculate the proton-Ar cross-section from the data sample, which will enter the calculations of final state interactions in neutrino Ar scattering.
氩气中微子相互作用的研究
影响因子：
--
作者：
P. Hamilton
通讯作者：
P. Hamilton
适用于高压应用的气体监测室
影响因子：
1.3
作者：
P. Hamacher;S. Roth;Thomas Radermacher;N. Thamm
通讯作者：
N. Thamm
DOI：
10.1016/j.nima.2011.02.036
发表时间：
2011-05-01
影响因子：
1.4
作者：
Abgrall, N.;Andrieu, B.;Zito, M.
通讯作者：
Zito, M.