论文标题
在欧洲XFEL上的强场QED实验豪华的探测器挑战
Detector Challenges of the strong-field QED experiment LUXE at the European XFEL
论文作者
论文摘要
豪华实验旨在研究电子激光器和光子激光器相互作用的高场QED，欧洲XFEL的16.5 GEV电子束和具有高达350 TW的激光束。该实验将在预期的$ {10}^{ - 3} $的预期范围内测量电子，正面和光子的光谱，以$ {10}^9 $每1 Hz束束交叉，取决于激光功率和焦点。这些测量必须在存在低能高辐射后地面的情况下进行。为了应对这些挑战，对于高速电子和光子通量，该实验将使用Cherenkov辐射探测器，闪烁体屏幕，蓝宝石传感器以及铅玻璃监视器，以从束降低光束下进行反向散射。将使用具有GAAS传感器的四层硅像素跟踪器和紧凑的电磁钨量热计来测量正电子光谱。提出了实验的布局以及在恶劣的辐射条件下的预期性能，以及Cherenkov检测器的测试和最近在DESY执行的电磁（EM）热量计的测试。该实验获得了DESY管理层的0阶段临界批准（CD0），并正在准备其技术设计报告（TDR）。预计将在2025/2026开始运行。
The LUXE experiment aims at studying high-field QED in electron-laser and photon-laser interactions, with the 16.5 GeV electron beam of the European XFEL and a laser beam with power of up to 350 TW. The experiment will measure the spectra of electrons, positrons and photons in the expected range of ${10}^{-3}$ to ${10}^9$ per 1 Hz bunch crossing, depending on the laser power and focus. These measurements have to be performed in the presence of low-energy high radiation-background. To meet these challenges, for high-rate electron and photon fluxes, the experiment will use Cherenkov radiation detectors, scintillator screens, sapphire sensors as well as lead-glass monitors for backscattering off the beam-dump. A four-layer silicon-pixel tracker and a compact electromagnetic tungsten calorimeter with GaAs sensors will be used to measure the positron spectra. The layout of the experiment and the expected performance under the harsh radiation conditions, together with the test of the Cherenkov detector and the electromagnetic (EM) calorimeter performed recently at DESY, are presented. The experiment received a stage 0 critical approval (CD0) from the DESY management and is in the process of preparing its technical design report (TDR). It is expected to start running in 2025/2026.
