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

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Review of Scientific Instruments

OSTI ID:1045244

Kalvas, T ^[1]; Welton, Robert F ^[2]; Pennisi, Terry R ^[2]

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1. University of Jyvaskyla
2. ORNL

The H{sup -} 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 {approx}38 mA beam current in the linac at 60 Hz with a pulse length of up to {approx}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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: ORNL other overhead
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1045244
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 2; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM CURRENTS
BEAM TRANSPORT
CESIUM
ELECTRODES
ELECTROSTATICS
ION SOURCES
LINEAR ACCELERATORS
NEUTRON SOURCES
NEUTRONS
QUADRUPOLES
RELIABILITY
SPALLATION