scholarly journals Neutron Imager with Micro Channel Plates (MCP) in Electrostatic Mirror Configuration: First Experimental Test

2017 ◽  
Vol 90 ◽  
pp. 62-68
Author(s):  
V. Variale ◽  
B. Skarbo
Keyword(s):  
Experimental Test ◽  
Micro Channel ◽  
Electrostatic Mirror ◽  
Mirror Configuration

scholarly journals Neutron imager with micro channel plates (MCP) in electrostatic mirror configuration: Neutron beam test

2020 ◽  
Vol 50 ◽  
pp. 2060018
Author(s):  
Vincenzo Variale ◽  
Boris Skarbo
Keyword(s):  
Neutron Beam ◽  
Time Of Flight ◽  
Ccd Camera ◽  
Micro Channel ◽  
Thin Aluminum ◽  
Channel Plate ◽  
Neutron Time ◽  
Electrostatic Mirror ◽  
Monitor Device ◽  
Mirror Configuration

A recent advancement in a new high transparency monitor device based on Micro Channel Plate (MCP) has been proposed for monitoring flux and beam spatial profiles of neutrons. It consisted of the assembly of a very thin aluminum (Al) foil with a 6Li deposit placed along the beam and a MCP equipped with a phosphor screen readout viewed by a CCD camera outside the beam line. The peculiar feature of this device is that it uses an electrostatic mirror to minimize the perturbation of the neutron beam, i.e. absorption and scattering. It can be used at existing time-of-flight facilities, in particular at the neutron Time-of-Flight (n_TOF) facility at CERN, for monitoring the flux and the spatial profile of neutron beams in the thermal and epithermal region. In this contribution, the device experimental test carried out on the n_TOF neutron beam at CERN will be presented and discussed.

scholarly journals Neutron imager with micro channel plates (MCP) in electrostatic mirror configuration: Experimental test with radiation source

2018 ◽  
Vol 48 ◽  
pp. 1860120
Author(s):  
V. Variale ◽  
B. Skarbo
Keyword(s):  
Neutron Beam ◽  
Ccd Camera ◽  
Experimental Tests ◽  
Micro Channel ◽  
Spatial Profile ◽  
Critical Feature ◽  
Neutron Beams ◽  
Channel Plate ◽  
A Charge ◽  
Electrostatic Mirror

The design of a new high-transparency device based on a Micro Channel Plate (MCP) detector was recently proposed for monitoring the flux and beam spatial profile of neutron beams. The proposed device consists of a very thin aluminum (Al) foil (with a [Formula: see text]Li deposit) placed in the neutron beam and an MCP detector equipped with a phosphor-screen readout linked to a charge-coupled device (CCD) camera outside the neutron beam. A critical feature of this device is that it uses an electrostatic mirror to minimize the perturbation of the neutron beam (i.e., absorption and scattering). It can be used at existing neutron time-of-flight (n_TOF) facilities (in particular at the n_TOF facility at CERN) for monitoring the flux and spatial profile of neutron beams in the thermal and epithermal region. The experimental tests conducted for this study using a radioactive source to determine the behavior of the electrostatic mirror behavior will be presented and discussed in this paper.

scholarly journals Studies of Magnetically Focused Electrostatic Mirror I. Experimental Test of the First Order Properties

1998 ◽  
Author(s):  
Albert V. Crewe ◽  
Shengyang Ruan ◽  
Pamela Korda ◽  
Frank C. Tsai
Keyword(s):  
Experimental Test ◽  
First Order ◽  
Electrostatic Mirror

Data Acquisition and Handling Unit for a Quantitative Use of Electron Energy Loss Spectroscopy

1977 ◽  
Vol 35 ◽  
pp. 232-233 ◽  
Author(s):  
P. Trebbia ◽  
P. Ballongue ◽  
C. Colliex
Keyword(s):  
Electron Microscope ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Single Channel ◽  
Detection System ◽  
Surface Barrier ◽  
Solid State Detector ◽  
Electrostatic Mirror ◽  
Electron Energy Loss

An effective use of electron energy loss spectroscopy for chemical characterization of selected areas in the electron microscope can only be achieved with the development of quantitative measurements capabilities.The experimental assembly, which is sketched in Fig.l, has therefore been carried out. It comprises four main elements.The analytical transmission electron microscope is a conventional microscope fitted with a Castaing and Henry dispersive unit (magnetic prism and electrostatic mirror). Recent modifications include the improvement of the vacuum in the specimen chamber (below 10-6 torr) and the adaptation of a new electrostatic mirror.The detection system, similar to the one described by Hermann et al (1), is located in a separate chamber below the fluorescent screen which visualizes the energy loss spectrum. Variable apertures select the electrons, which have lost an energy AE within an energy window smaller than 1 eV, in front of a surface barrier solid state detector RTC BPY 52 100 S.Q. The saw tooth signal delivered by a charge sensitive preamplifier (decay time of 5.10-5 S) is amplified, shaped into a gaussian profile through an active filter and counted by a single channel analyser.

The impact of expectations and satisfaction on the initiation and maintenance of smoking cessation: An experimental test.

2008 ◽  
Vol 27 (3, Suppl) ◽  
pp. S197-S206 ◽  
Author(s):  
Andrew W. Hertel ◽  
Emily A. Finch ◽  
Kristina M. Kelly ◽  
Christie King ◽  
Harry Lando ◽  
...  
Keyword(s):  
Smoking Cessation ◽  
Experimental Test ◽  
The Impact
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