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).

Funders	Funder number
UT-Battelle	DE-AC05-00OR22725
SNS Nordic Forest Research

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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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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.

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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.

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

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