Low-energy beam transport studies supporting the spallation neutron source 1-MW beam operation

B. X. Han; T. Kalvas; O. Tarvainen; R. F. Welton; S. N. Murray; T. R. Pennisi; M. Santana; M. P. Stockli

doi:10.1063/1.3681125

Low-energy beam transport studies supporting the spallation neutron source 1-MW beam operation

B. X. Han
, T. Kalvas
, O. Tarvainen
, R. F. Welton
, S. N. Murray
, T. R. Pennisi
, M. Santana
, M. P. Stockli

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

6 Scopus citations

Abstract

The H^- injector consisting of a cesium enhanced RF-driven ion source and a 2-lens electrostatic low-energy beam transport (LEBT) system supports the spallation neutron source 1 MW beam operation with ∼38 mA beam current in the linac at 60 Hz with a pulse length of up to ∼1.0 ms. In this work, two important issues associated with the low-energy beam transport are discussed: (1) inconsistent dependence of the post-radio frequency quadrupole accelerator beam current on the ion source tilt angle and (2) high power beam losses on the LEBT electrodes under some off-nominal conditions compromising their reliability.

Original language	English
Article number	02B727
Journal	Review of Scientific Instruments
Volume	83
Issue number	2
DOIs	https://doi.org/10.1063/1.3681125
State	Published - Feb 2012
Externally published	Yes

Funding

This work was supported by SNS through UT-Battelle, LLC, (Contract No. DE-AC05-00OR22725) for the (U.S.) Department of Energy (DOE).

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10.1063/1.3681125

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title = "Low-energy beam transport studies supporting the spallation neutron source 1-MW beam operation",

abstract = "The H- injector consisting of a cesium enhanced RF-driven ion source and a 2-lens electrostatic low-energy beam transport (LEBT) system supports the spallation neutron source 1 MW beam operation with ∼38 mA beam current in the linac at 60 Hz with a pulse length of up to ∼1.0 ms. In this work, two important issues associated with the low-energy beam transport are discussed: (1) inconsistent dependence of the post-radio frequency quadrupole accelerator beam current on the ion source tilt angle and (2) high power beam losses on the LEBT electrodes under some off-nominal conditions compromising their reliability.",

author = "Han, \{B. X.\} and T. Kalvas and O. Tarvainen and Welton, \{R. F.\} and Murray, \{S. N.\} and Pennisi, \{T. R.\} and M. Santana and Stockli, \{M. P.\}",

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doi = "10.1063/1.3681125",

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T1 - Low-energy beam transport studies supporting the spallation neutron source 1-MW beam operation

AU - Han, B. X.

AU - Kalvas, T.

AU - Tarvainen, O.

AU - Welton, R. F.

AU - Murray, S. N.

AU - Pennisi, T. R.

AU - Santana, M.

AU - Stockli, M. P.

PY - 2012/2

Y1 - 2012/2

N2 - The H- injector consisting of a cesium enhanced RF-driven ion source and a 2-lens electrostatic low-energy beam transport (LEBT) system supports the spallation neutron source 1 MW beam operation with ∼38 mA beam current in the linac at 60 Hz with a pulse length of up to ∼1.0 ms. In this work, two important issues associated with the low-energy beam transport are discussed: (1) inconsistent dependence of the post-radio frequency quadrupole accelerator beam current on the ion source tilt angle and (2) high power beam losses on the LEBT electrodes under some off-nominal conditions compromising their reliability.

AB - The H- injector consisting of a cesium enhanced RF-driven ion source and a 2-lens electrostatic low-energy beam transport (LEBT) system supports the spallation neutron source 1 MW beam operation with ∼38 mA beam current in the linac at 60 Hz with a pulse length of up to ∼1.0 ms. In this work, two important issues associated with the low-energy beam transport are discussed: (1) inconsistent dependence of the post-radio frequency quadrupole accelerator beam current on the ion source tilt angle and (2) high power beam losses on the LEBT electrodes under some off-nominal conditions compromising their reliability.

UR - https://www.scopus.com/pages/publications/84857846855

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DO - 10.1063/1.3681125

M3 - Article

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VL - 83

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 2

M1 - 02B727

ER -

Low-energy beam transport studies supporting the spallation neutron source 1-MW beam operation

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