16 research outputs found

    Making of a developing fiscal state_Data_1833-1939

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    Historical fiscal data for Greece, 1833-1939, compiled from primary sources and reclassified. Includes auxiliary data from other sources. From the paper: The making of a developing fiscal state: A new historical dataset and a graphical network analysis for Greece, 1833-1939THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

    Performance of 0.75 mm pitch mwpc's operating at high rate

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    Three Multiwire Proportional Chambers (MWPC) with high rate capability have been constructed for Fermi National Accelerator Laboratory experiment 705 (Charmonium and Direct Photon production by 7r± , P and p at 300 GeV/c) [1]. Each chamber, with a sensitive area of 308 cm2 consists of three anode planes, wound with 12.5 µm diameter gold-plated Tungsten/Rhenium wire, facing 25 µm graphite-coated kapton cathode planes at a distance of 3 mm. Wire spacing in two of the MWPC (PC-B1 and PC-B2) is 0.75 mm and 1.00 mm in the third one (PC-B3). After a few weeks of running on “Magic Gas” with a beam flux of up to ~ 107 particles/cm2sec, severe damage occurred to the graphite coating. All cathode planes were replaced by aluminized kapton, and the chambers worked successfully for the next 3 months until the end of the run, when a 10% efficiency drop was observed after a total accumulated charge of ~1 C/cm of sense wire. After the end of the run the chambers were disassembled and inspected. A white deposit with a characteristic “wire pattern” etched away from the Al coating was observed in the region of the beam spot. © 1989 IEE

    Performance of a lead radiator, gas tube calorimeter

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    Design and performance of a 4.2 radiation length lead-sandwich, gas tube hodoscope are discussed. The device, measuring 1 x 2 m2 in area and 12 cm in depth, was employed in Fermi National Accelerator Lab experiment 705 [1]. Multiple samplings of anode wires situated within three-walled aluminum tubes were used to generate an X coordinate; similarly, capacitively coupled copper-clad strips were ganged together to yield a Y coordinate. The results reviewed are based on an analysis of electron calibration data taken during a recent six-month running period. In particular, position resolution (in millimeters) is seen to be [formula omitted] for the 9.92 mm spaced wires and [formula omitted] for the 12.5 mm strips, where E represents the electron beam energy in GeV. © 1989 IEE
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