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Sep 2010

Volume 81, Issue 9, Articles (09xxxx)

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back to top Particle Sources, Optics and Acceleration; Particle Detectors

Radial current high power dummy load for characterizing the high power laser triggered transformer-type accelerator

Yi Yin, Hui-Huang Zhong, Jin-Liang Liu, He-Ming Ren, Jian-Hua Yang, Xiao-Ping Zhang, and Zhi-qiang Hong

Rev. Sci. Instrum. 81, 093301 (2010); http://dx.doi.org/10.1063/1.3480546 (5 pages) | Cited 1 time

Online Publication Date: 13 September 2010

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A radial-current aqueous resistive solution load was applied to characterize a laser triggered transformer-type accelerator. The current direction in the dummy load is radial and is different from the traditional load in the axial. Therefore, this type of dummy load has smaller inductance and fast response characteristic. The load was designed to accommodate both the resistance requirement of accelerator and to allow optical access for the laser. Theoretical and numerical calculations of the load’s inductance and capacitance are given. The equivalent circuit of the dummy load is calculated in theory and analyzed with a PSPICE code. The simulation results agree well with the theoretical analysis. At last, experiments of the dummy load applied to the high power spiral pulse forming line were performed; a quasisquare pulse voltage is obtained at the dummy load.
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84.70.+p High-current and high-voltage technology: power systems; power transmission lines and cables

A versatile automated sample changer for texture measurements on the high pressure-preferred orientation neutron diffractometer

H. M. Reiche and S. C. Vogel

Rev. Sci. Instrum. 81, 093302 (2010); http://dx.doi.org/10.1063/1.3485035 (6 pages) | Cited 4 times

Online Publication Date: 30 September 2010

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An automated sample changer with an Eulerian cradle for neutron texture measurements is described. This device has been measuring over 2300 texture and almost 400 powder samples at ambient conditions since it became operational in 2002 for use in the high pressure-preferred orientation diffractometer at the LANSCE neutron scattering facility. Operation for almost a decade resulted in sustained enhancements of mechanics, electronics, and software which significantly improved reliability and resiliency. We also describe in this paper our platform independent computer program POD2K which we use to create publication quality pole figure plots for texture samples.
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61.05.fm Neutron diffraction
61.43.Gt Powders, porous materials
81.40.Ef Cold working, work hardening; annealing, post-deformation annealing, quenching, tempering recovery, and crystallization
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