Realization of a Large-Acceptance Faraday Cup for 3 MeV Electrons

The design, construction, installation, and testing of a Faraday Cup intended to measure the current of a 3 MeV, 1 microampere electron beam is described. Built as a current monitor for a Møller scattering measurement at the MIT High Voltage Research Laboratory, the device combines a large angular a...

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Bibliographic Details
Published in:arXiv.org 2018-11
Main Authors: Johnston, R, Bernauer, J, Cooke, C M, Corliss, R, Epstein, C S, Fisher, P, Friščić, I, Hasell, D, Ihloff, E, Kelsey, J, Lee, S, Milner, R G, Moran, P, Steadman, S G, Vidal, C
Format: Article
Language:English
Subjects:
Electron beams
Electrons
Energy measurement
High voltages
Online Access:Get full text
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Description
Summary:The design, construction, installation, and testing of a Faraday Cup intended to measure the current of a 3 MeV, 1 microampere electron beam is described. Built as a current monitor for a Møller scattering measurement at the MIT High Voltage Research Laboratory, the device combines a large angular acceptance with the capability to measure a continuous, low energy beam. Bench studies of its performance demonstrate current measurements accurate to the percent level at 1 microampere. The Faraday Cup was designed and constructed at MIT and has been in use at the HVRL since 2017, providing a significantly more detailed measurement of beam current than was previously available.
ISSN:2331-8422
DOI:10.48550/arxiv.1811.12196