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First storage of ion beams in the Double Electrostatic Ion-Ring Experiment: DESIREE

Schmidt, H. T. ; Thomas, R. D. ; Gatchell, M. ; Rosen, S. ; Reinhed, P. ; Lofgren, P. ; Brannholm, L. ; Blom, M. ; Bjorkhage, M. and Backstrom, E. , et al. (2013) In Review of Scientific Instruments 84(5).
Abstract
We report on the first storage of ion beams in the Double ElectroStatic Ion Ring ExpEriment, DESIREE, at Stockholm University. We have produced beams of atomic carbon anions and small carbon anion molecules (C-n(-), n = 1, 2, 3, 4) in a sputter ion source. The ion beams were accelerated to 10 keV kinetic energy and stored in an electrostatic ion storage ring enclosed in a vacuum chamber at 13 K. For 10 keV C-2(-) molecular anions we measure the residual-gas limited beam storage lifetime to be 448 s +/- 18 s with two independent detector systems. Using the measured storage lifetimes we estimate that the residual gas pressure is in the 10(-14) mbar range. When high current ion beams are injected, the number of stored particles does not... (More)
We report on the first storage of ion beams in the Double ElectroStatic Ion Ring ExpEriment, DESIREE, at Stockholm University. We have produced beams of atomic carbon anions and small carbon anion molecules (C-n(-), n = 1, 2, 3, 4) in a sputter ion source. The ion beams were accelerated to 10 keV kinetic energy and stored in an electrostatic ion storage ring enclosed in a vacuum chamber at 13 K. For 10 keV C-2(-) molecular anions we measure the residual-gas limited beam storage lifetime to be 448 s +/- 18 s with two independent detector systems. Using the measured storage lifetimes we estimate that the residual gas pressure is in the 10(-14) mbar range. When high current ion beams are injected, the number of stored particles does not follow a single exponential decay law as would be expected for stored particles lost solely due to electron detachment in collision with the residual-gas. Instead, we observe a faster initial decay rate, which we ascribe to the effect of the space charge of the ion beam on the storage capacity. (C) 2013 AIP Publishing LLC. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Review of Scientific Instruments
volume
84
issue
5
article number
055115
publisher
American Institute of Physics (AIP)
external identifiers
  • wos:000319999300073
  • scopus:84878927049
  • pmid:23742597
ISSN
1089-7623
DOI
10.1063/1.4807702
language
English
LU publication?
yes
id
c8116522-03e8-441a-98f1-2ddab2dd4a12 (old id 3930373)
date added to LUP
2016-04-01 14:10:13
date last changed
2022-12-11 22:17:13
@article{c8116522-03e8-441a-98f1-2ddab2dd4a12,
  abstract     = {{We report on the first storage of ion beams in the Double ElectroStatic Ion Ring ExpEriment, DESIREE, at Stockholm University. We have produced beams of atomic carbon anions and small carbon anion molecules (C-n(-), n = 1, 2, 3, 4) in a sputter ion source. The ion beams were accelerated to 10 keV kinetic energy and stored in an electrostatic ion storage ring enclosed in a vacuum chamber at 13 K. For 10 keV C-2(-) molecular anions we measure the residual-gas limited beam storage lifetime to be 448 s +/- 18 s with two independent detector systems. Using the measured storage lifetimes we estimate that the residual gas pressure is in the 10(-14) mbar range. When high current ion beams are injected, the number of stored particles does not follow a single exponential decay law as would be expected for stored particles lost solely due to electron detachment in collision with the residual-gas. Instead, we observe a faster initial decay rate, which we ascribe to the effect of the space charge of the ion beam on the storage capacity. (C) 2013 AIP Publishing LLC.}},
  author       = {{Schmidt, H. T. and Thomas, R. D. and Gatchell, M. and Rosen, S. and Reinhed, P. and Lofgren, P. and Brannholm, L. and Blom, M. and Bjorkhage, M. and Backstrom, E. and Alexander, J. D. and Leontein, S. and Hanstorp, D. and Zettergren, H. and Liljeby, L. and Kallberg, A. and Simonsson, A. and Hellberg, F. and Mannervik, S. and Larsson, M. and Geppert, W. D. and Rensfelt, K. G. and Danared, Håkan and Paal, A. and Masuda, M. and Hallden, P. and Andler, G. and Stockett, M. H. and Chen, T. and Kallersjo, G. and Weimer, J. and Hansen, K. and Hartman, Henrik and Cederquist, H.}},
  issn         = {{1089-7623}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Review of Scientific Instruments}},
  title        = {{First storage of ion beams in the Double Electrostatic Ion-Ring Experiment: DESIREE}},
  url          = {{http://dx.doi.org/10.1063/1.4807702}},
  doi          = {{10.1063/1.4807702}},
  volume       = {{84}},
  year         = {{2013}},
}