THE ALEPH EXPERIMENT AT LEP

1986 ◽  
Vol 01 (01) ◽  
pp. 117-133 ◽  
Author(s):  
WEIMIN WU
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Storage Ring ◽  
Test Results ◽  
Electron Positron ◽  
200 Gev ◽  
Present Design ◽  
Interaction Regions ◽  
Large Electron Positron ◽  
Design And Construction

The Large Electron-Positron storage ring(LEP) at CERN is expected to produce e+e− collisions with luminosities of the order of 1032 cm −2 s −1, at eight interaction points, initially at c.m. energies up to 100 GeV, later up to 200 GeV. Only the 4 even-numbered interaction regions will be equipped with experiments during the first phase of the LEP. ALEPH is one of these, and will be located in pit 4. Here we briefly report on the present design and construction of ALEPH, as well as on some test results obtained with prototypes, and Monte Carlo simulations.

Neutron imaging with bent perfect crystals. II. Practical multi-wafer approach

2004 ◽  
Vol 37 (3) ◽  
pp. 426-437
Author(s):  
A. D. Stoica ◽  
M. Popovici ◽  
X.-L. Wang ◽  
D.-Q. Wang ◽  
C. R. Hubbard
Keyword(s):  
Monte Carlo ◽  
Phase Space ◽  
Monte Carlo Simulations ◽  
Spatial Resolution ◽  
Experimental Test ◽  
Bragg Reflection ◽  
Neutron Imaging ◽  
Test Results ◽  
New Applications ◽  
Imaging Conditions

In a previous paper [Stoica, Popovici & Hubbard (2001),J. Appl. Cryst.34, 343–357], the phase-space analysis of neutron imaging by Bragg reflection from thick bent perfect crystals or multi-wafer assemblies resulted in the derivation of various imaging conditions. An array of new applications becomes possible, including dispersive and non-dispersive neutron imaging at a sub-millimetre spatial resolution. This paper outlines the experimental test results on non-dispersive imaging with thick packets of silicon wafers. The experimental results are compared with Monte Carlo simulations.

Monte Carlo Simulations of Atomic Processes at the Gas Jet Target of the ESR Storage Ring

1999 ◽  
Vol T80 (B) ◽  
pp. 326 ◽  
Author(s):  
P. S?wiat ◽  
A. Warczak ◽  
Th. St?hlker ◽  
F. Bosch ◽  
C. Kozhuharov ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Storage Ring ◽  
Gas Jet ◽  
Atomic Processes

scholarly journals Monte Carlo Simulations of Proficiency Testing for Geometric Distributed Test Results

2016 ◽  
Vol 44 ◽  
pp. 042041
Author(s):  
Marius Darie ◽  
Sorin Burian ◽  
Tiberiu Csaszar ◽  
Leonard Lupu ◽  
Lucian Moldovan ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Proficiency Testing ◽  
Test Results ◽  
Distributed Test

scholarly journals The large electron positron storage ring preinjector vacuum systems: Design and performance

1987 ◽  
Vol 5 (4) ◽  
pp. 2346-2351 ◽  
Author(s):  
M. Bourgeois ◽  
M. Brouet ◽  
J. C. Godot ◽  
F. Malthouse ◽  
A. Poncet ◽  
...  
Keyword(s):  
Storage Ring ◽  
Systems Design ◽  
Electron Positron ◽  
And Performance ◽  
Vacuum Systems ◽  
Large Electron Positron

Monte Carlo Simulations for the Shielding of the Collector Ring and the Recycled Experimental Storage Ring at FAIR

2009 ◽  
Vol 168 (2) ◽  
pp. 487-491
Author(s):  
Alexandra Knapp ◽  
Torsten Radon ◽  
Karsten Vogt ◽  
Georg Fehrenbacher
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Storage Ring ◽  
Experimental Storage Ring

Low-voltage EDS of magnesium ferrite Dendrites in a FEG-SEM

1996 ◽  
Vol 54 ◽  
pp. 478-479
Author(s):  
Matthew T. Johnson ◽  
Ian M. Anderson ◽  
Jim Bentley ◽  
C. Barry Carter
Keyword(s):  
Monte Carlo ◽  
Quantitative Analysis ◽  
Monte Carlo Simulations ◽  
Cross Section ◽  
Spatial Resolution ◽  
Low Voltage ◽  
Magnesium Ferrite ◽  
X Ray ◽  
Interaction Volume ◽  
Ferrite Spinel

Energy-dispersive X-ray spectrometry (EDS) performed at low (≤ 5 kV) accelerating voltages in the SEM has the potential for providing quantitative microanalytical information with a spatial resolution of ∼100 nm. In the present work, EDS analyses were performed on magnesium ferrite spinel [(MgxFe1−x)Fe2O4] dendrites embedded in a MgO matrix, as shown in Fig. 1. spatial resolution of X-ray microanalysis at conventional accelerating voltages is insufficient for the quantitative analysis of these dendrites, which have widths of the order of a few hundred nanometers, without deconvolution of contributions from the MgO matrix. However, Monte Carlo simulations indicate that the interaction volume for MgFe2O4 is ∼150 nm at 3 kV accelerating voltage and therefore sufficient to analyze the dendrites without matrix contributions.Single-crystal {001}-oriented MgO was reacted with hematite (Fe2O3) powder for 6 h at 1450°C in air and furnace cooled. The specimen was then cleaved to expose a clean cross-section suitable for microanalysis.

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