Transport and analysis of electron beams from a laser wakefield accelerator in the 100 MeV energy range with a dedicated magnetic line

被引：3
|
作者：
Maitrallain, A. [1 ]
Audet, T. L. [2 ]
Dufrenoy, S. Dobosz [1 ]
Chance, A. [3 ]
Maynard, G. [2 ]
Lee, P. [2 ]
Mosnier, A. [3 ]
Schwindling, J. [3 ]
Delferriere, O. [3 ]
Delerue, N. [4 ]
Specka, A. [5 ]
Monot, P. [1 ]
Cros, B. [2 ]
机构：
[1] Univ Paris Saclay, CNRS, CEA Saclay, LIDYL, F-91191 Gif Sur Yvette, France
[2] Univ Paris Saclay, Univ Paris Sud, CNRS, LPGP, Orsay, France
[3] Univ Paris Saclay, CEA Saclay, IRFU, F-91191 Gif Sur Yvette, France
[4] Univ Paris Saclay, Univ Pari Sud, CNRS, LAL, Orsay, France
[5] Ecole Polytech, CNRS, LLR, Palaiseau, France
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2018年 / 908卷
关键词：
Laser wakefield acceleration; Transport line; Spectrometer; PLASMA ACCELERATION; THERAPY;
D O I：
10.1016/j.nima.2018.08.004
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Electron bunches generated by laser driven wakefield acceleration are transported and analyzed using a magnetic line composed of a triplet of quadrupoles and a dipole. Short pulse bunches with a total charge of approximate to 130 pC, and broad band energy spectra in the range 45 to 150 MeV are generated by ionization assisted injection in a gas cell. The electron source is imaged about one meter away from the exit of the gas cell by the magnetic line, delivering electron bunches at a stable position in the image plane where a charge density of approximate to 2.9 pC/mm(2) at an energy of 69.4 +/- 0.6 MeV is achieved. This magnetic line improves dramatically the accuracy of energy determination of this electron source, leading to an energy error as low as 8.6%parts per thousand in the 70 MeV range for 5 mrad divergence electron bunch and considering the resolution of the entire detection system. The transport of bunches with improved stability and energy selection paves the way to various applications including multi-stage laser plasma acceleration.
引用
收藏
页码：159 / 166
页数：8
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