Advances in surface ion suppression from RILIS: Towards the Time-of-Flight Laser Ion Source (ToF-LIS)

S. Rothe; R. Catherall; B. Crepieux; T. Day Goodacre; V.N. Fedosseev; T. Giles; B.A. Marsh; J.P. Ramos; R.E. Rossel

doi:10.1016/j.nimb.2016.02.060

Advances in surface ion suppression from RILIS: Towards the Time-of-Flight Laser Ion Source (ToF-LIS)

S. Rothe
, R. Catherall
, B. Crepieux
, T. Day Goodacre
, V.N. Fedosseev
, T. Giles
, B.A. Marsh
, J.P. Ramos
, R.E. Rossel

Department of Physics & Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present results from the development towards the Time-of-Flight Laser Ion Source (ToF-LIS) aiming for the suppression of isobaric contaminants through fast beam gating. The capability to characterize high resistance ion sources has been successfully demonstrated. A ninefold selectivity gain has been achieved through suppression of surface ionized potassium, while maintaining >90% transmission for laser-ionized gallium using a thin wall graphite ionizer cavity combined with a fast beam gate. Initial results from the investigation of glassy carbon as a potential hot cavity ion source are presented. Power-cycle tests of a newly designed mount for fragile ion source cavities indicates its capability to survive the thermal stress expected during operation in an ISOLDE target unit. Finally, we introduce fast ion beam switching at a rate of 10 kHz using the ISOLDE ion beam switchyard as a new concept for ion beam distribution and conclude by highlighting the potential applications of this ion beam multiplexing technique.

Original language	English
Pages (from-to)	86-90
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	376
Early online date	16 Apr 2016
DOIs	https://doi.org/10.1016/j.nimb.2016.02.060
Publication status	Published - 1 Jun 2016

Keywords

RILIS
resonance laser ionization
ISOLDE
ion source development

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10.1016/j.nimb.2016.02.060

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Rothe, S., Catherall, R., Crepieux, B., Day Goodacre, T., Fedosseev, V. N., Giles, T., Marsh, B. A., Ramos, J. P., & Rossel, R. E. (2016). Advances in surface ion suppression from RILIS: Towards the Time-of-Flight Laser Ion Source (ToF-LIS). Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 376, 86-90. https://doi.org/10.1016/j.nimb.2016.02.060

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title = "Advances in surface ion suppression from RILIS: Towards the Time-of-Flight Laser Ion Source (ToF-LIS)",

abstract = "We present results from the development towards the Time-of-Flight Laser Ion Source (ToF-LIS) aiming for the suppression of isobaric contaminants through fast beam gating. The capability to characterize high resistance ion sources has been successfully demonstrated. A ninefold selectivity gain has been achieved through suppression of surface ionized potassium, while maintaining >90\% transmission for laser-ionized gallium using a thin wall graphite ionizer cavity combined with a fast beam gate. Initial results from the investigation of glassy carbon as a potential hot cavity ion source are presented. Power-cycle tests of a newly designed mount for fragile ion source cavities indicates its capability to survive the thermal stress expected during operation in an ISOLDE target unit. Finally, we introduce fast ion beam switching at a rate of 10 kHz using the ISOLDE ion beam switchyard as a new concept for ion beam distribution and conclude by highlighting the potential applications of this ion beam multiplexing technique.",

keywords = "RILIS, resonance laser ionization, ISOLDE, ion source development",

author = "S. Rothe and R. Catherall and B. Crepieux and \{Day Goodacre\}, T. and V.N. Fedosseev and T. Giles and B.A. Marsh and J.P. Ramos and R.E. Rossel",

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Rothe, S, Catherall, R, Crepieux, B, Day Goodacre, T, Fedosseev, VN, Giles, T, Marsh, BA, Ramos, JP & Rossel, RE 2016, 'Advances in surface ion suppression from RILIS: Towards the Time-of-Flight Laser Ion Source (ToF-LIS)', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 376, pp. 86-90. https://doi.org/10.1016/j.nimb.2016.02.060

TY - JOUR

T1 - Advances in surface ion suppression from RILIS

T2 - Towards the Time-of-Flight Laser Ion Source (ToF-LIS)

AU - Rothe, S.

AU - Catherall, R.

AU - Crepieux, B.

AU - Day Goodacre, T.

AU - Fedosseev, V.N.

AU - Giles, T.

AU - Marsh, B.A.

AU - Ramos, J.P.

AU - Rossel, R.E.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - We present results from the development towards the Time-of-Flight Laser Ion Source (ToF-LIS) aiming for the suppression of isobaric contaminants through fast beam gating. The capability to characterize high resistance ion sources has been successfully demonstrated. A ninefold selectivity gain has been achieved through suppression of surface ionized potassium, while maintaining >90% transmission for laser-ionized gallium using a thin wall graphite ionizer cavity combined with a fast beam gate. Initial results from the investigation of glassy carbon as a potential hot cavity ion source are presented. Power-cycle tests of a newly designed mount for fragile ion source cavities indicates its capability to survive the thermal stress expected during operation in an ISOLDE target unit. Finally, we introduce fast ion beam switching at a rate of 10 kHz using the ISOLDE ion beam switchyard as a new concept for ion beam distribution and conclude by highlighting the potential applications of this ion beam multiplexing technique.

AB - We present results from the development towards the Time-of-Flight Laser Ion Source (ToF-LIS) aiming for the suppression of isobaric contaminants through fast beam gating. The capability to characterize high resistance ion sources has been successfully demonstrated. A ninefold selectivity gain has been achieved through suppression of surface ionized potassium, while maintaining >90% transmission for laser-ionized gallium using a thin wall graphite ionizer cavity combined with a fast beam gate. Initial results from the investigation of glassy carbon as a potential hot cavity ion source are presented. Power-cycle tests of a newly designed mount for fragile ion source cavities indicates its capability to survive the thermal stress expected during operation in an ISOLDE target unit. Finally, we introduce fast ion beam switching at a rate of 10 kHz using the ISOLDE ion beam switchyard as a new concept for ion beam distribution and conclude by highlighting the potential applications of this ion beam multiplexing technique.

KW - RILIS

KW - resonance laser ionization

KW - ISOLDE

KW - ion source development

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DO - 10.1016/j.nimb.2016.02.060

M3 - Article

SN - 0168-583X

VL - 376

SP - 86

EP - 90

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

Advances in surface ion suppression from RILIS: Towards the Time-of-Flight Laser Ion Source (ToF-LIS)

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