TITLE

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

AUTHOR(S)
Han, B. X.; Kalvas, T.; Tarvainen, O.; Welton, R. F.; Murray, S. N.; Pennisi, T. R.; Santana, M.; Stockli, M. P.
PUB. DATE
February 2012
SOURCE
Review of Scientific Instruments;Feb2012, Vol. 83 Issue 2, p02B727
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
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.
ACCESSION #
72107437

 

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