A novel beam focus control at the entrance to the ANU 14UD accelerator

M. De Cesare; D. C. Weisser; L. K. Fifield; T. B. Tunningley; N. R. Lobanov

doi:10.1051/epjconf/20136303008

A novel beam focus control at the entrance to the ANU 14UD accelerator

M. De Cesare, D. C. Weisser, L. K. Fifield, T. B. Tunningley, N. R. Lobanov

Research output: Contribution to journal › Conference article › peer-review

6 Citations (Scopus)

Abstract

Tandem electrostatic accelerators often require the flexibility to operate at variety of terminal voltages to cater for various user needs. However beam transmission will only be optimal for a limited range of terminal voltages. This paper describes a focussing system that greatly expands the range of terminal voltages for optimal transmission. This is achieved by controlling the gradient of the entrance of the low-energy tube providing an additional controllable focusing element. Up to 150 kV is applied to the fifth electrode of the first unit of the accelerator tube giving control of the tube entrance lens strength. Beam tests to confirm the efficacy of the lens have been performed. These tests demonstrate that the entrance lens control eliminates the need to short out sections of the tube for low terminal voltage operation.

Original language	English
Article number	03008
Journal	EPJ Web of Conferences
Volume	63
DOIs	https://doi.org/10.1051/epjconf/20136303008
Publication status	Published - 2013
Event	Heavy Ion Accelerator Symposium 2013 - Canberra, ACT, Australia Duration: 8 Apr 2013 → 12 Apr 2013

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abstract = "Tandem electrostatic accelerators often require the flexibility to operate at variety of terminal voltages to cater for various user needs. However beam transmission will only be optimal for a limited range of terminal voltages. This paper describes a focussing system that greatly expands the range of terminal voltages for optimal transmission. This is achieved by controlling the gradient of the entrance of the low-energy tube providing an additional controllable focusing element. Up to 150 kV is applied to the fifth electrode of the first unit of the accelerator tube giving control of the tube entrance lens strength. Beam tests to confirm the efficacy of the lens have been performed. These tests demonstrate that the entrance lens control eliminates the need to short out sections of the tube for low terminal voltage operation.",

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AU - Weisser, D. C.

AU - Fifield, L. K.

AU - Tunningley, T. B.

AU - Lobanov, N. R.

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N2 - Tandem electrostatic accelerators often require the flexibility to operate at variety of terminal voltages to cater for various user needs. However beam transmission will only be optimal for a limited range of terminal voltages. This paper describes a focussing system that greatly expands the range of terminal voltages for optimal transmission. This is achieved by controlling the gradient of the entrance of the low-energy tube providing an additional controllable focusing element. Up to 150 kV is applied to the fifth electrode of the first unit of the accelerator tube giving control of the tube entrance lens strength. Beam tests to confirm the efficacy of the lens have been performed. These tests demonstrate that the entrance lens control eliminates the need to short out sections of the tube for low terminal voltage operation.

AB - Tandem electrostatic accelerators often require the flexibility to operate at variety of terminal voltages to cater for various user needs. However beam transmission will only be optimal for a limited range of terminal voltages. This paper describes a focussing system that greatly expands the range of terminal voltages for optimal transmission. This is achieved by controlling the gradient of the entrance of the low-energy tube providing an additional controllable focusing element. Up to 150 kV is applied to the fifth electrode of the first unit of the accelerator tube giving control of the tube entrance lens strength. Beam tests to confirm the efficacy of the lens have been performed. These tests demonstrate that the entrance lens control eliminates the need to short out sections of the tube for low terminal voltage operation.

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Y2 - 8 April 2013 through 12 April 2013

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A novel beam focus control at the entrance to the ANU 14UD accelerator

Abstract

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