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首页> 外文期刊>AIP Advances >A broad energy range (100 MeV–10 GeV) electron spectrometer for high power laser wakefield acceleration experiments
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A broad energy range (100 MeV–10 GeV) electron spectrometer for high power laser wakefield acceleration experiments

机译：高功率激光韦克菲尔德加速实验的宽能谱（100 MeV-10 GEV）电子光谱仪

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摘要

Laser wakefield acceleration is able to provide electron beams of GeV energy and continuously evolves toward higher energies. These beams have broad energy spectrum; hence, their measurements require diagnostics with wide energy acceptance. Here, we present a design of an electron spectrometer to characterize the beams in the energy range of 100 MeV–10 GeV, in a single shot. The design consists of 1-m long permanent dipole magnets and has a variable gap opening to accommodate different divergences and pointings of the electron beams. The design is backed by simulations, which are used to optimize the positions of imaging plates. The use of a collimator to improve the energy resolution in the case of large beam divergences and beam pointing is presented. We also present the Monte Carlo simulations to evaluate the signal to noise ratio, with and without a collimator.
机译：激光韦克菲尔德加速能够提供GEV能量的电子束，并不断发展朝向更高的能量。这些光束具有广泛的能谱;因此，它们的测量需要具有广泛的能量接受的诊断。这里，我们介绍了电子光谱仪的设计，以在单一拍摄中表征100 mev-10 gev的能量范围内的光束。该设计由1米长的永久偶极磁体组成，具有可变间隙开口，以适应电子束的不同分歧和指点。该设计由模拟备份，用于优化成像板的位置。提出了使用准直器来提高能量分辨率，并提出了大束分路和光束指向。我们还介绍了蒙特卡罗模拟，以评估信噪比，有和没有准直器。

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