Design and fabrication of gas cell targets for laboratory astrophysics experiments on the Orion high-power laser facility  

作　　者：C.Spindloe D.Wyatt S.Astbury G.F.Swadling T.Clayson C.Stehlé J.M.Foster E.Gumbrell R.Charles C.N.Danson P.Brummitt F.Suzuki-Vidal C. Spindloe D. Wyatt S. Astbury G. F. Swadling T. Clayson C. Stehle J. M. Foster E. Gumbrell R. Charles C. N. Danson E Brummitt F. Suzuki-Vidal(Science and Technology Facilities Council,Harwell Science and Innovation Campus;Blackett Laboratory,Imperial College;Lawrence Livermore National Laboratory;LERMA,Sorbonne Universités,UPMC Univ.Paris06,Observatoire de Paris,PSL Research University;AWE plc)

机构地区：[1]Science and Technology Facilities Council, Harwell Science and Innovation Campus, Dideot, OXl l OQX, UK [2]Blackett Laboratory, Imperial College, London, SW7 2BW, UK [3]AWE plc, Aldermaston, Reading RG7 4PR, UK [4]LERMA, Sorbonne Universitds, UPMC Univ. Paris 06, Observatoire de Paris, PSL Research University, CNRS, F- 75252, Paris, France [5]Current address： Lawrence Livermore National Laboratory, California 94550, USA

出　　处：《High Power Laser Science and Engineering》2017年第3期62-66,共5页高功率激光科学与工程（英文版）

摘　　要：This paper describes the design and fabrication of a range of ‘gas cell' microtargets produced by the Target Fabrication Group in the Central Laser Facility(CLF) for academic access experiments on the Orion laser facility at the Atomic Weapons Establishment(AWE). The experiments were carried out by an academic consortium led by Imperial College London. The underlying target methodology was an evolution of a range of targets used for experiments on radiative shocks and involved the fabrication of a precision machined cell containing a number of apertures for interaction foils or diagnostic windows. The interior of the cell was gas-filled before laser irradiation. This paper details the assembly processes, thin film requirements and micro-machining processes needed to produce the targets. Also described is the implementation of a gas-fill system to produce targets that are filled to a pressure of 0.1–1 bar. The paper discusses the challenges that are posed by such a target.This paper describes the design and fabrication of a range of ＇gas cell＇ microtargets produced by the Target Fabrication Group in the Central Laser Facility （CLF） for academic access experiments on the Orion laser facility at the Atomic Weapons Establishment （AWE）. The experiments were carried out by an academic consortium led by Imperial College London. The underlying target methodology was an evolution of a range of targets used for experiments on radiative shocks and involved the fabrication of a precision machined cell containing a number of apertures for interaction foils or diagnostic windows. The interior of the cell was gas-filled before laser irradiation. This paper details the assembly processes, thin film requirements and micro-machining processes needed to produce the targets. Also described is the implementation of a gas-fill system to produce targets that are filled to a pressure of 0.1-1 bar. The paper discusses the challenges that are posed by such a target.

关 键 词：ASTROPHYSICS microtargets 

分 类 号：TN24[电子电信—物理电子学]