Advanced

On-line measurement of proton beam current in pA range

Auzelyte, Vaida LU ; Andersson, F; Elfman, Mikael LU ; Kristiansson, Per LU ; Pallon, Jan LU ; Wegdén, Marie LU ; Nilsson, Charlotta LU and Arteaga, Natalia LU (2006) In Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms 249. p.760-763
Abstract
A MeV proton beam with a current in the range of fA-nA is usually measured using a secondary beam signal that is dependent on a sample or requires noise-free accurate charge integration in a Faraday cup. We propose a simple on-line beam current measurement setup that can be used to directly measure beam current during ion beam analysis. A fast beam blanker is used to modulate the beam position after the last set of collimator slits in and out of a mini Faraday cup connected to fA-sensitive electrometer. Less than 100 fA current can be measured during an undisturbed irradiation with kHz sampling frequency. The fast, simple and easily controlled current measurement set-up is going to be routinely used for ion beam analysis and modification... (More)
A MeV proton beam with a current in the range of fA-nA is usually measured using a secondary beam signal that is dependent on a sample or requires noise-free accurate charge integration in a Faraday cup. We propose a simple on-line beam current measurement setup that can be used to directly measure beam current during ion beam analysis. A fast beam blanker is used to modulate the beam position after the last set of collimator slits in and out of a mini Faraday cup connected to fA-sensitive electrometer. Less than 100 fA current can be measured during an undisturbed irradiation with kHz sampling frequency. The fast, simple and easily controlled current measurement set-up is going to be routinely used for ion beam analysis and modification at the new Lund sub-micron beam line. (c) 2006 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
beam blanker, Faraday cup, low beam current, beam control
in
Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
volume
249
pages
760 - 763
publisher
Elsevier
external identifiers
  • wos:000239545000184
  • scopus:33745960036
ISSN
0168-583X
DOI
10.1016/j.nimb.2006.03.134
language
English
LU publication?
yes
id
18770b12-7086-4f75-a657-734898df401b (old id 398293)
date added to LUP
2007-12-20 16:22:04
date last changed
2019-02-20 07:35:51
@article{18770b12-7086-4f75-a657-734898df401b,
  abstract     = {A MeV proton beam with a current in the range of fA-nA is usually measured using a secondary beam signal that is dependent on a sample or requires noise-free accurate charge integration in a Faraday cup. We propose a simple on-line beam current measurement setup that can be used to directly measure beam current during ion beam analysis. A fast beam blanker is used to modulate the beam position after the last set of collimator slits in and out of a mini Faraday cup connected to fA-sensitive electrometer. Less than 100 fA current can be measured during an undisturbed irradiation with kHz sampling frequency. The fast, simple and easily controlled current measurement set-up is going to be routinely used for ion beam analysis and modification at the new Lund sub-micron beam line. (c) 2006 Elsevier B.V. All rights reserved.},
  author       = {Auzelyte, Vaida and Andersson, F and Elfman, Mikael and Kristiansson, Per and Pallon, Jan and Wegdén, Marie and Nilsson, Charlotta and Arteaga, Natalia},
  issn         = {0168-583X},
  keyword      = {beam blanker,Faraday cup,low beam current,beam control},
  language     = {eng},
  pages        = {760--763},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms},
  title        = {On-line measurement of proton beam current in pA range},
  url          = {http://dx.doi.org/10.1016/j.nimb.2006.03.134},
  volume       = {249},
  year         = {2006},
}