Patrimonio y Pueblos indígenas. Reflexiones desde una perspectiva interdisciplinaria e intercultural,, 2016
Resumen: En el siguiente artículo se pretende desplegar las diversas valoraciones que las figuras... more Resumen: En el siguiente artículo se pretende desplegar las diversas valoraciones que las figuras tridimensionales de Santiago Apóstol pueden tener en diferentes contextos: en el pueblo de Belén, en el escenario de la fiesta y de la devoción activa, y en el Museo de Arte Étnico de la ciudad de Salta, en contextos museales.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 1990
The construction and the operation of a large-area transition radiation detector (TRD) for the NA... more The construction and the operation of a large-area transition radiation detector (TRD) for the NA31 experiment at CERN are described. The TRD incorporates several novel features for stabilizing the detector response. The density of the gas mixture (xenon+helium+methane) in the detection chambers is matched to the carbon dioxide gas in the surrounding radiators by tuning the helium concentration to avoid a hydrostatic pressure difference, which would deform the chamber walls. The chamber pressure is continuously regulated by computer control to maintain it to within 1 μbar of the radiator pressure. The gas gain of each of the four chambers is regulated to better than 0.2% by changing the high voltage under computer control, using the pulse-height spectra of 16 109Ca sources mounted on the chambers. The results of performance studies are described. The detector has a pion efficiency of 98.7% with an electron rejection of a factor of 10. Funded by the German Federal Minister for Research and Technology (BMFT) under contract 054Si74.
Patrimonio y Pueblos indígenas. Reflexiones desde una perspectiva interdisciplinaria e intercultural,, 2016
Resumen: En el siguiente artículo se pretende desplegar las diversas valoraciones que las figuras... more Resumen: En el siguiente artículo se pretende desplegar las diversas valoraciones que las figuras tridimensionales de Santiago Apóstol pueden tener en diferentes contextos: en el pueblo de Belén, en el escenario de la fiesta y de la devoción activa, y en el Museo de Arte Étnico de la ciudad de Salta, en contextos museales.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 1990
The construction and the operation of a large-area transition radiation detector (TRD) for the NA... more The construction and the operation of a large-area transition radiation detector (TRD) for the NA31 experiment at CERN are described. The TRD incorporates several novel features for stabilizing the detector response. The density of the gas mixture (xenon+helium+methane) in the detection chambers is matched to the carbon dioxide gas in the surrounding radiators by tuning the helium concentration to avoid a hydrostatic pressure difference, which would deform the chamber walls. The chamber pressure is continuously regulated by computer control to maintain it to within 1 μbar of the radiator pressure. The gas gain of each of the four chambers is regulated to better than 0.2% by changing the high voltage under computer control, using the pulse-height spectra of 16 109Ca sources mounted on the chambers. The results of performance studies are described. The detector has a pion efficiency of 98.7% with an electron rejection of a factor of 10. Funded by the German Federal Minister for Research and Technology (BMFT) under contract 054Si74.
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Papers by Bárbara Ossa