16 research outputs found
Making of a developing fiscal state_Data_1833-1939
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
Dissipative correlated dynamics of a moving impurity immersed in a Bose–Einstein condensate
Performance of 0.75 mm pitch mwpc's operating at high rate
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
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